UCC2803-Q1中文资料德州仪器数据手册PDF规格书

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

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.