• Product pinout
  • Description
  • AMC6821,Temperature Monitoring And Fan Control
  • The AMC6821 is an intelligent temperature monitor and pulse-width modulation (PWM) fan controller. It is designed for noise-sensitive or power-sensitive applications that require active system cooling. Using either a low-frequency or a high-frequency PWM ...
  • TL1451A,Dual Channel Controller With Wide Input Voltage Range
  • The TL1451A incorporates on a single monolithic chip all the functions required in the construction of two pulse-width-modulation (PWM) control circuits. Designed primarily for power-supply control, the TL1451A contains an on-chip 2.5-V regulator, two error ...
  • TL5001,PWM Controller With Wide Input Range
  • The TL5001 and TL5001A incorporate on a single monolithic chip all the functions required for a pulse-width-modulation (PWM) control circuit. Designed primarily for power-supply control, the TL5001/A contains an error amplifier, a regulator, an oscillator, a ...
  • TL5001A,PWM Controller With Wide Input Voltage Range
  • The TL5001 and TL5001A incorporate on a single monolithic chip all the functions required for a pulse-width-modulation (PWM) control circuit. Designed primarily for power-supply control, the TL5001/A contains an error amplifier, a regulator, an oscillator, a ...
  • UC2572,Negative Output Flyback Pulse Width Modulator
  • The UC3572 is a negative output flyback pulse width modulator which converts a positive input voltage to a regulated negative output voltage. The chip is optimized for use in a single inductor negative flyback switching converter employing an external PMOS ...
  • UC2573,Buck Pulse Width Modulator Stepdown Voltage Regulator
  • The UC3573 is a Buck pulse width modulator which steps down and regulates a positive input voltage. The chip is optimized for use in a single inductor buck switching converter employing an external PMOS switch. The block diagram consists of a precision ...
  • UC3886,Average Current Mode PWM Controller IC
  • The UC3886 family of PWM controller ICs is designed for DC-to-DC converters with average current mode control. It is designed for use in conjunction with the UC3910 4-bit DAC and Voltage Monitor. The UC3886 drives an external N-channel MOSFET and can be used ...
  • DRV590,High Efficiency PWM Power Driver
  • The DRV590 is a high-efficiency power amplifier ideal for driving a wide variety of thermoelectric cooler elements in systems powered from 2.7 V to 5.5 V. PWM operation and low output stage on-resistance significantly decrease power dissipation in the ...
  • DRV591,High-Efficiency PWM Power Driver
  • The DRV591 is a high-efficiency, high-current power amplifier ideal for driving a wide variety of thermoelectric cooler elements in systems powered from 2.8 V to 5.5 V. PWM operation and low output stage on-resistance significantly decrease power dissipation ...
  • DRV592,High-Efficiency H-Bridge (Requires External PWM)
  • The DRV592 is a high-efficiency, high-current H-bridge ideal for driving a wide variety of thermoelectric cooler elements in systems powered from 2.8 V to 5.5 V. Low output stage on-resistance significantly decreases power dissipation in the amplifier.
  • DRV593,+/-3 A High-Efficiency PWM Power Driver
  • The DRV593 and DRV594 are high-efficiency, high-current power amplifiers ideal for driving a wide variety of thermoelectric cooler elements in systems powered from 2.8 V to 5.5 V. The operation of the device requires only one inductor and capacitor for the ...
  • DRV594,+/-3 A High-Efficiency PWM Power Driver
  • The DRV593 and DRV594 are high-efficiency, high-current power amplifiers ideal for driving a wide variety of thermoelectric cooler elements in systems powered from 2.8 V to 5.5 V. The operation of the device requires only one inductor and capacitor for the ...
  • DRV101,PWM Solenoid/Valve Driver
  • The DRV101 is a low-side power switch employing a pulse-width modulated (PWM) output. Its rugged design is optimized for driving electromechanical devices such as valves, solenoids, relays, actuators, and positioners. The DRV101 is also ideal for driving ...
  • DRV102,PWM Solenoid/Valve Driver
  • The DRV102 is a high-side power switch employing a pulse-width modulated (PWM) output. Its rugged design is optimized for driving electromechanical devices such as valves, solenoids, relays, actuators, and positioners. The DRV102 is also ideal for driving ...
  • SG2524,Regulating Pulse-Width Modulator
  • The SG2524 and SG3524 incorporate all the functions required in the construction of a regulating power supply, inverter, or switching regulator on a single chip. They also can be used as the control element for high-power-output applications. The SG2524 and ...
  • SG3524,Regulating Pulse-Width Modulators
  • The SG2524 and SG3524 incorporate all the functions required in the construction of a regulating power supply, inverter, or switching regulator on a single chip. They also can be used as the control element for high-power-output applications. The SG2524 and ...
  • TL2842,Current-Mode PWM Controller
  • The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented ...
  • TL2842B,High-Performance Current-Mode PWM Controller
  • The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuits ...
  • TL2843,Current-Mode PWM Controller
  • The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented ...
  • TL2843B,High-Performance Current-Mode PWM Controller
  • The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuits ...
  • TL2844,Current-Mode PWM Controller
  • The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented ...
  • TL2844B,High-Performance Current-Mode PWM Controller
  • The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuits ...
  • TL2845,Current-Mode PWM Controller
  • The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented ...
  • TL2845B,High-Performance Current-Mode PWM Controller
  • The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuits ...
  • TL3842,Current-Mode PWM Controller
  • The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented ...
  • TL3842B,High-Performance Current-Mode PWM Controller
  • The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuits ...
  • TL3843,Current-Mode PWM Controller
  • The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented ...
  • TL3843B,High-Performance Current-Mode PWM Controller
  • The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuits ...
  • TL3844,Current-Mode PWM Controller
  • The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented ...
  • TL3844B,High-Performance Current-Mode PWM Controller
  • The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuits ...
  • TL3845,Current-Mode PWM Controller
  • The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented ...
  • TL3845B,High-Performance Current-Mode PWM Controller
  • The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuits ...
  • TL494,PWM Control Circuit
  • The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control ...
  • TL594,Pulse-Width-Modulation (PWM) Control Circuit
  • The TL594 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the systems engineer the flexibility to tailor the ...
  • TL598,Pulse-Width-Modulation (Pwm) Control Circuit
  • The TL598 incorporates all the functions required in the construction of pulse-width-modulated (PWM) controlled systems on a single chip. Designed primarily for power-supply control, the TL598 provides the systems engineer with the flexibility to tailor the ...
  • UC2524,Advanced Regulating Pulse Width Modulators
  • The UC1524, UC2524 and UC3524 incorporate on a single monolithic chip all the functions required for the construction of regulating power supplies, inverters or switching regulators. They can also be used as the control element for high-power-output ...
  • UC2524A,Advanced Regulating Pulse Width Modulators
  • The UC1524A family of regulating PWM ICs has been designed to retain the same highly versatile architecture of the industry standard UC1524 (SG1524) while offering substantial improvements to many of its limitations. The UC1524A is pin compatible with ...
  • UC2525A,Regulating Pulse Width Modulators
  • The UC1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1V reference is trimmed to 1% and the ...
  • UC2525B,Regulating Pulse Width Modulators
  • The UC1525B/1527B series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1V buried zener reference is trimmed ...
  • UC2526,Regulating Pulse Width Modulator
  • The UC1526 is a high performance monolithic pulse width modulator circuit designed for fixed-frequency switching regulators and other power control applications. Included in an 18-pin dual-in-line package are a temperature compensated voltage reference, ...
  • UC2526A,Regulating Pulse Width Modulator
  • The UC1526A Series are improved-performance pulse-width modulator circuits intended for direct replacement of equivalent non- A versions in all applications. Higher frequency operation has been enhanced by several significant improvements including: a more ...
  • UC2527A,Regulating Pulse Width Modulators
  • The UC1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1V reference is trimmed to 1% and the ...
  • UC28023,Economy High Speed PWM Controllers
  • The UC28023 and UC28025 are fixed-frequency PWM Controllers optimized for high-frequency switched-mode power supply applications. The UC28023 is a single output PWM for single-ended topologies while the UC28025 offers dual alternating outputs for double-ended ...
  • UC28025,Economy High Speed PWM Controller
  • The UC28023 and UC28025 are fixed-frequency PWM Controllers optimized for high-frequency switched-mode power supply applications. The UC28023 is a single output PWM for single-ended topologies while the UC28025 offers dual alternating outputs for double-ended ...
  • UC2823,High Speed PWM Controller
  • The UC1823 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the ...
  • UC2823A,High Speed PWM Controller
  • The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM Controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 ...
  • UC2823B,High Speed PWM Controller
  • The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM Controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 ...
  • UC2824,High Speed PWM Controller
  • The UC1824 family of PWM control devices is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of ...
  • UC2825,High Speed PWM Controller
  • The UC1825 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the ...
  • UC2825A,High Speed PWM Controller
  • The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM Controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 ...
  • UC2825B,High Speed PWM Controller
  • The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM Controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 ...
  • UC2841,Programmable, Off-Line, PWM Controller
  • The UC1841 family of PWM Controllers has been designed to increase the level of versatility while retaining all of the performance features of the earlier UC1840 devices. While still optimized for highly-efficient boot-strapped primary-side operation in ...
  • UC2842,Current-Mode PWM Controller
  • The UC1842/3/4/5 family of control devices provides the necessary features to implement off-line or dc-to-dc fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout ...
  • UC2842A,Current Mode PWM Controller
  • The UC1842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC3842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up ...
  • UC2842AQ,Automotive Catalog Current-Mode PWM Controller
  • The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up ...
  • UC2843,Current-Mode PWM Controller
  • The UC1842/3/4/5 family of control devices provides the necessary features to implement off-line or dc-to-dc fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout ...
  • UC2843A,Current Mode PWM Controller
  • The UC1842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC3842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up ...
  • UC2844,Current-Mode PWM Controller
  • The UC1842/3/4/5 family of control devices provides the necessary features to implement off-line or dc-to-dc fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout ...
  • UC2844A,Current Mode PWM Controller
  • The UC1842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC3842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up ...
  • UC2845,Current-Mode PWM Controller
  • The UC1842/3/4/5 family of control devices provides the necessary features to implement off-line or dc-to-dc fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout ...
  • UC2845A,Current Mode PWM Controller
  • The UC1842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC3842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up ...
  • UC2845AQ,Automotive Catalog Current-Mode PWM Controller
  • The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up ...
  • UC2846,Current Mode PWM Controller
  • The UC1846/7 family of control ICs provides all of the necessary features to implement fixed frequency, current mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line ...
  • UC2847,Current Mode PWM Controller
  • The UC1846/7 family of control ICs provides all of the necessary features to implement fixed frequency, current mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line ...
  • UC2848,Average Current Mode PWM Controller
  • The UC3848 family of PWM control ICs makes primary side average current mode control practical for isolated switching converters. Average current mode control insures that both cycle by cycle peak switch current and maximum average inductor current are well ...
  • UC2849,Secondary Side Average Current Mode Controller
  • The UC3849 family of average current-mode controllers accurately accomplishes secondary side average current mode control. The secondary-side output voltage is regulated by sensing the output voltage and differentially sensing the ac switching current. The ...
  • UC2851,Programmable, Off-Line, PWM Controller
  • The UC1851 family of PWM Controllers are optimized for off-line primary side control. These devices include a high current totem pole output stage and a toggle flip-flop for absolute 50% duty cycle limiting. In all other respects this line of controllers is ...
  • UC2856,Improved Current Mode PWM Controller
  • The UC3856 is a high performance version of the popular UC3846 series of current mode controllers, and is intended for both design upgrades and new applications where speed and accuracy are important. All input to output delays have been minimized, and the ...
  • UC2856Q,Automotive Catalog Improved Current Mode PWM Controller
  • The UC2856 is a high performance version of the popular UC2846 series of current mode controllers, and is intended for both design upgrades and new applications where speed and accuracy are important. All input to output delays have been minimized, and the ...
  • UC2861,Resonant-Mode Power Supply Controllers
  • The UC1861-1868 family of ICs is optimized for the control of Zero Current Switched and Zero Voltage Switched quasi-resonant converters. Differences between members of this device family result from the various combinations of UVLO thresholds and output ...
  • UC2863,Resonant-Mode Power Supply Controllers
  • The UC1861-1868 family of ICs is optimized for the control of Zero Current Switched and Zero Voltage Switched quasi-resonant converters. Differences between members of this device family result from the various combinations of UVLO thresholds and output ...
  • UC2864,Resonant-Mode Power Supply Controllers
  • The UC1861-1868 family of ICs is optimized for the control of Zero Current Switched and Zero Voltage Switched quasi-resonant converters. Differences between members of this device family result from the various combinations of UVLO thresholds and output ...
  • UC2865,Resonant-Mode Power Supply Controllers
  • The UC1861-1868 family of ICs is optimized for the control of Zero Current Switched and Zero Voltage Switched quasi-resonant converters. Differences between members of this device family result from the various combinations of UVLO thresholds and output ...
  • UC2866,Resonant-Mode Power Supply Controllers
  • The UC1861-1868 family of ICs is optimized for the control of Zero Current Switched and Zero Voltage Switched quasi-resonant converters. Differences between members of this device family result from the various combinations of UVLO thresholds and output ...
  • UC2875,Phase Shift Resonant Controller
  • The UC1875 family of integrated circuits implements control of a bridge power stage by phase-shifting the switching of one half-bridge with respect to the other, allowing constant frequency pulse-width modulation in combination with resonant, zero-voltage ...
  • UC2876,Phase Shift Resonant Controller
  • The UC1875 family of integrated circuits implements control of a bridge power stage by phase-shifting the switching of one half-bridge with respect to the other, allowing constant frequency pulse-width modulation in combination with resonant, zero-voltage ...
  • UC2879,Phase Shift Resonant Controller
  • The UC3879 controls a bridge power stage by phase shifting the switching of one half-bridge with respect to the other. This allows constant frequency pulse width modulation in combination with resonant, zero-voltage switching for high efficiency performance. ...
  • UC2886,Average Current Mode PWM Controller IC
  • The UC3886 family of PWM controller ICs is designed for DC-to-DC converters with average current mode control. It is designed for use in conjunction with the UC3910 4-bit DAC and Voltage Monitor. The UC3886 drives an external N-channel MOSFET and can be used ...
  • UC3524,Advanced Regulating Pulse Width Modulators
  • The UC1524, UC2524 and UC3524 incorporate on a single monolithic chip all the functions required for the construction of regulating power supplies, inverters or switching regulators. They can also be used as the control element for high-power-output ...
  • UC3524A,Advanced Regulating Pulse Width Modulators
  • The UC1524A family of regulating PWM ICs has been designed to retain the same highly versatile architecture of the industry standard UC1524 (SG1524) while offering substantial improvements to many of its limitations. The UC1524A is pin compatible with ...
  • UC3525A,Regulating Pulse Width Modulators
  • The UC1525A/1527A series of pulse width modulator integrated circuits are desi 281d gned to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1V reference is trimmed to 1% ...
  • UC3525B,Regulating Pulse Width Modulators
  • The UC1525B/1527B series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1V buried zener reference is trimmed ...
  • UC3526,Regulating Pulse Width Modulator
  • The UC1526 is a high performance monolithic pulse width modulator circuit designed for fixed-frequency switching regulators and other power control applications. Included in an 18-pin dual-in-line package are a temperature compensated voltage reference, ...
  • UC3526A,Regulating Pulse Width Modulators
  • The UC1526A Series are improved-performance pulse-width modulator circuits intended for direct replacement of equivalent non- A versions in all applications. Higher frequency operation has been enhanced by several significant improvements including: a more ...
  • UC3527A,Regulating Pulse Width Modulators
  • The UC1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1V reference is trimmed to 1% and the ...
  • UC3527B,Regulating Pulse Width Modulators
  • The UC1525B/1527B series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1V buried zener reference is trimmed ...
  • UC3823,High Speed PWM Controller
  • The UC1823 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the ...
  • UC3823A,High Speed PWM Controller
  • The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM Controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 ...
  • UC3823B,High Speed PWM Controller
  • The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM Controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 ...
  • UC3824,High Speed PWM Controller
  • The UC1824 family of PWM control devices is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of ...
  • UC3825,High Speed PWM Controller
  • The UC1825 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the ...
  • UC3825A,High Speed PWM Controller
  • The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM Controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 ...
  • UC3825B,High Speed PWM Controller
  • The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM Controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 ...
  • UC3841,Programmable, Off-Line, PWM Controller
  • The UC1841 family of PWM Controllers has been designed to increase the level of versatility while retaining all of the performance features of the earlier UC1840 devices. While still optimized for highly-efficient boot-strapped primary-side operation in ...