UCC28130/1/2/3/4/5Q1

LOW POWER BICMOS CURRENT MODE PWM

SGLS245D − MAY 2004 − REVISED APRIL 2008

1

POST OFFICE BOX 655303

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

Current Sense Signal

Current-Sense to Gate Drive Output

UC3842A

description

The UCC2813-0/-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 UCC2813-0/-1/-2/-3/-4/-5 family offers choice of maximum duty cycle and critical voltage levels. Lower

reference parts, such as the UCC2813-3 and UCC2813-5, fit best into battery-operated systems, while the

higher reference and the higher undervoltage lockout (UVLO) hysteresis of the UCC2813-2 and UCC2813-4

make these ideal choices for use in off-line power supplies.

The UCC2813-x series is specified for the automotive temperature range of −40

_C to 125_C.

PART NUMBER

MAXIMUM DUTY CYCLE

REFERENCE VOLTAGE

TURN-ON THRESHOLD

TURN-OFF THRESHOLD

UCC2813-0

100%

5 V

7.2 V

6.9 V

UCC2813-1

50%

5 V

9.4 V

7.4 V

UCC2813-2

100%

5 V

12.5 V

8.3 V

UCC2813-3

100%

4 V

4.1 V

3.6 V

UCC2813-4

50%

5 V

12.5 V

8.3 V

UCC2813-5

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.