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 error Amplifier This controller is designed for use in either current-mode or voltage mode systems with the capability for input voltage feed-forward.
Protection circuitry includes a current limit Comparator with a 1V 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 under-voltage lockout section with 800mV of hysteresis assures low start up current. During under-voltage lockout, the outputs are high impedance.
These devices feature totem pole outputs designed to source and sink high peak currents from capacitive loads, such as the Gate of a Power MOSFET The on state is designed as a high level.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
UC1825VTD1 Texas Instruments High-Speed PWM Controller, UC1825-DIE 0-
UC1825VTD2 Texas Instruments High-Speed PWM Controller, UC1825-DIE 0-
UC1825L883B Texas Instruments High Speed PWM Controller 20-LCCC -55 to 125
UC1825AL883B Texas Instruments High Speed PWM Controller 20-LCCC -55 to 125
UC1825AVTD1 Texas Instruments Rad-Tolerant, High-Speed PWM Controller 0- 0 to 0
UC1825AVTD2 Texas Instruments Rad-Tolerant, High-Speed PWM Controller 0- 0 to 0
UC1825LQMLV Texas Instruments 1.5A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, CQCC20, CERAMIC, LCC-20
UC1825BEVM-CVAL Texas Instruments 5V/50 W push-pull evaluation module
UC1825J Texas Instruments High Speed PWM Controller 16-CDIP -55 to 125
UC1825AJ Texas Instruments High Speed PWM Controller 16-CDIP -55 to 125
UC1825 's PackagesUC1825 's pdf datasheet



UC1825 Pinout, Pinouts
UC1825 pinout,Pin out
This is one package pinout of UC1825,If you need more pinouts please download UC1825's pdf datasheet.

UC1825 Application circuits
UC1825 circuits
This is one application circuit of UC1825,If you need more circuits,please download UC1825's pdf datasheet.


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