UCC2800/2801/2802/2803/2804/2805Q1

LOW POWER BICMOS CURRENT MODE PWM

SGLS121C − JULY 2002 − REVISED APRIL 2008

1

POST OFFICE BOX 655303

Machine Model (C = 200 pF, R = 0)

Current Sense Signal

Current-Sense to Gate Drive Output

description

The UCC2800/1/2/3/4/5 family of high-speed, low-power integrated circuits contain all of the control and drive

components required for off-line and dc-to-dc fixed frequency current-mode switching power supplies with

minimal parts count.

These devices have the same pin configuration as the UC2842/3/4/5 family and also offer the added features

of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC2800/1/2/3/4/5 family offers choice of maximum duty cycle and critical voltage levels. Lower reference

parts such as the UCC2803 and UCC2805 fit best into battery operated systems, while the higher reference

and the higher UVLO hysteresis of the UCC2802 and UCC2804 make these ideal choices for use in off-line

power supplies.

The UCC280xQDRQ1 series is specified for the automotive temperature range of −40

_C to 125_C, and

qualified in accordance with AEC-Q100 stress test qualification for integrated circuits.

PART NUMBER

MAXIMUM DUTY CYCLE

REFERENCE VOLTAGE

TURN-ON THRESHOLD

TURN-OFF THRESHOLD

UCC2800

100%

5 V

7.2 V

6.9 V

UCC2801

50%

5 V

9.4 V

7.4 V

UCC2802

100%

5 V

12.5 V

8.3 V

UCC2803

100%

4 V

4.1 V

3.6 V

UCC2804

50%

5 V

12.5 V

8.3 V

UCC2805

50%

4 V

4.1 V

3.6 V

Copyright

 2008, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.