Low-Power BiCMOS Current-Mode PWM - UCC2800

UCC2800 (ACTIVE)

Low-Power BiCMOS Current-Mode PWM

 

Description

The UCCx80x 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 mode power supplies with minimal parts count.

These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCCx80x family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the UCC2803 and UCC2805 fit best into battery-operated systems, while the higher reference and higher UVLO hysteresis of the UCC2802 and UCC2804 make these ideal choices for use in off-line power supplies.

The UCC180x series is specified for operation from –55°C to 125°C, the UCC280x series is specified for operation from –40°C to 85°C, and the UCC380x series is specified for operation from 0°C to 70°C.

Features

  • 100-µA Typical Starting Supply Current
  • 500-µA Typical Operating Supply Current
  • Operation up to 1 MHz
  • Internal Soft Start
  • Internal Fault Soft Start
  • Internal Leading-Edge Blanking of the Current
    Sense Signal
  • 1-A 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

View more

Parametrics Compare all products in PWM and Resonant Controller

 
Topology
Control Method
Vin (Min) (V)
Vin (Max) (V)
Frequency (Max) (kHz)
UVLO Thresholds On/Off (V)
Duty Cycle (Max) (%)
Gate Drive (Typ) (A)
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
UCC2800 UCC1800 UCC3800
Boost
Flyback
Forward   
Boost
Flyback
Forward   
Boost
Buck
Flyback
Forward   
Current    Current    Current   
6.9    6.9    6.9   
12    12    12   
1000    1000    1000   
7.2/6.9    7.2/6.9    7.2/6.9   
100    100    100   
1    1    1   
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start   
Error Amplifier
Leading Edge Blanking
Soft Start   
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start   
Catalog    Military    Catalog   
-40 to 85    -55 to 125    0 to 70   
8SOIC
8PDIP
8TSSOP   
20LCCC
8CDIP   
8PDIP
8TSSOP
8SOIC   
1.20 | 1ku      1.10 | 1ku   

Other qualified versions of UCC2800

Version Part Number Definition
Automotive UCC2800-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
Enhanced Product UCC2800-EP Supports Defense, Aerospace and Medical Applications

WEBENCH® Designer UCC2800

 AC  DC  
AC Frequency  60 Hz  50 Hz
Use Isolated Output?
  Min   Max Range
VinRMS  V 15.00 to 480.00V
Vout  V 3.3 to 50.0V
Iout  A ≤ 20.0A
Ambient Temp  °C -40 to 85°C