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 and full bridge topologies.
Targeted for cost effective solutions with minimal external components, UC2802x include an Oscillator a temperature compensated reference, a wide band width error Amplifier a high-speed current-sense Comparator and high-current active-high totem-pole outputs to directly drive external MOSFETs
Protection circuitry includes a current limit Comparator with a 1-V threshold, a TTL compatible shutdown port, and a soft-start pin which will double as a maximum duty cycle clamp. The Logic is fully latched to provide jitter free operation and prohibit multiple pulses at an output. An undervoltage lockout section with 800 mV of hysteresis assures low start-up current. During undervoltage lockout, the outputs are high impedance. Particular care was given to minimizing propagation delays through the Comparators and Logic circuitry while maximizing bandwidth and slew rate of the error Amplifier
Devices are available in the industrial temperature range of ?40C to 105C. Package offerings are 16-pin SOICW (DW), or 16-pin PDIP (N) packages.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
UC28025DW Texas Instruments Economy High Speed PWM Controllers (Double-ended) 16-SOIC -40 to 105
UC28025DWG4 Texas Instruments Economy High Speed PWM Controllers (Double-ended) 16-SOIC -40 to 105
UC28025NG4 Texas Instruments Economy High Speed PWM Controllers (Double-ended) 16-PDIP -40 to 105
UC28025DWR Texas Instruments Economy High Speed PWM Controllers (Double-ended) 16-SOIC -40 to 105
UC28025DWRG4 Texas Instruments Economy High Speed PWM Controllers (Double-ended) 16-SOIC -40 to 105
UC28025N Texas Instruments Economy High Speed PWM Controllers (Double-ended) 16-PDIP -40 to 105
UC28025 's PackagesUC28025 's pdf datasheet
UC28025DW SOIC
UC28025DWG4 SOIC
UC28025DWR SOIC
UC28025DWRG4 SOIC
UC28025N PDIP
UC28025NG4 PDIP




UC28025 Pinout, Pinouts
UC28025 pinout,Pin out
This is one package pinout of UC28025,If you need more pinouts please download UC28025's pdf datasheet.

UC28025 Application circuits
UC28025 circuits
This is one application circuit of UC28025,If you need more circuits,please download UC28025's pdf datasheet.


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