Current Mode PWM Controller 1A 8-Pin SOIC T/R

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.

Controlled Baseline

• One Assembly
• One Test Site
• One Fabrication Site

Extended Temperature Performance of –55°C to 125°C

Enhanced Diminishing Manufacturing Sources (DMS) Support

Enhanced Product Change Notification

Qualification Pedigree

ESD Protection Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)

100 µA Typical Starting Supply Current

500 µA Typical Operating Supply Current

Operation to 1 MHz

Internal Soft Start

Internal Fault Soft Start

Internal Leading-Edge Blanking of the Current Sense Signal

1 Amp Totem-Pole Output

70 ns Typical Response from Current-Sense to Gate Drive Output

1.5% Tolerance Voltage Reference

Same Pinout as UC3842 and UC3842A