UCC1800 Low-Power BiCMOS Current-Mode PWM | TI.com

UCC1800 (ACTIVE)

Low-Power BiCMOS Current-Mode PWM

Low-Power BiCMOS Current-Mode PWM - UCC1800
 

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 Offline and Isolated DC/DC Controller and Converter

 
Control Method
Vin (Min) (V)
Vin (Max) (V)
Topology
Duty Cycle (Max) (%)
Frequency (Max) (kHz)
UVLO Thresholds On/Off (V)
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
UCC1800
Current    
6.9    
12    
Boost
Flyback
Forward    
100    
1000    
7.2/6.9    
Error Amplifier
Leading Edge Blanking
Soft Start    
Military    
-55 to 125    
CDIP
LCCC    
See datasheet (CDIP)
20LCCC: 79 mm2: 8.89 x 8.89(LCCC)    

Other qualified versions of UCC1800

Version Part Number Definition
Catalog UCC3800 TI's standard catalog product

WEBENCH® Designer UCC1800

 AC  DC  
AC Frequency  60 Hz  50 Hz
Use Isolated Output?
  Min   Max Range
VinRMS  V 8.80 to 480.00V
Vout  V 3.3 to 50V
Iout  A ≤ 20A
Ambient Temp  °C -55 to 125°C