Low-Power BiCMOS Current-Mode PWM - UCC1800

UCC1800 (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 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 UCC2800 UCC3800
Current    Current    Current   
6.9    7.2    7.2   
12    400    400   
Boost
Flyback
Forward   
Boost
Flyback
Forward   
Boost
Buck
Flyback
Forward   
100    100    100   
1000    1000    1000   
7.2/6.9    7.2/6.9    7.2/6.9   
Error Amplifier
Leading Edge Blanking
Soft Start   
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start   
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start   
Military    Catalog    Catalog   
-55 to 125    -40 to 85    0 to 70   
CDIP
LCCC   
PDIP
SOIC
TSSOP   
PDIP
SOIC
TSSOP   
See datasheet (CDIP)
20LCCC: 79 mm2: 8.89 x 8.89(LCCC)   
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8TSSOP: 19 mm2: 6.4 x 3(TSSOP)   
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8TSSOP: 19 mm2: 6.4 x 3(TSSOP)   

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 15.00 to 480.00V
Vout  V 3.3 to 50.0V
Iout  A ≤ 20.0A
Ambient Temp  °C -55 to 125°C