UCC3800 Low-Power BiCMOS Current-Mode PWM | TI.com

UCC3800 (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 controllers & resonant controllers

 
Topology
Control method
VCC (Min) (V)
VCC (Max) (V)
Frequency (Max) (kHz)
UVLO thresholds on/off (V)
Duty cycle (Max) (%)
Gate drive (Typ) (A)
Features
Rating
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
UCC3800 UCC3801 UCC3802 UCC3803 UCC3804 UCC3805
Boost
Buck
Flyback
Forward    
Boost
Buck
Flyback
Forward    
Boost
Buck
Flyback
Forward    
Boost
Buck
Flyback
Forward    
Boost
Buck
Flyback
Forward    
Boost
Buck
Flyback
Forward    
Current     Current     Current     Current     Current     Current    
7.2     9.4     12.5     4.1     12.5     4.1    
12     12     12     12     12     12    
1000     1000     1000     1000     1000     1000    
7.2/6.9     9.4/7.4     12.5/8.3     4.1/3.6     12.5/8.3     4.1/3.6    
100     50     100     100     50     50    
1     1     1     1     1     1    
Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    
Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    
Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    
Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Multi-topology
Soft Start    
Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    
Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
0 to 70     0 to 70     0 to 70     0 to 70     0 to 70     0 to 70    
PDIP | 8
SOIC | 8
TSSOP | 8    
PDIP | 8
SOIC | 8
TSSOP | 8    
PDIP | 8
SOIC | 8
TSSOP | 8    
PDIP | 8
SOIC | 8
TSSOP | 8    
PDIP | 8
SOIC | 8
TSSOP | 8    
PDIP | 8
SOIC | 8
TSSOP | 8    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    

Design tool

WEBENCH® Designer UCC3800

 AC  DC  
AC Frequency  60 Hz  50 Hz
Use Isolated Output?
  Min   Max Range
VinRMS  V 8.80 to 2000.00V
Vout  V 3.3 to 1000V
Iout  A ≤ 100A
Ambient Temp  °C 0 to 70°C