UCC1806 Low Power, Dual Output, Current Mode PWM Controller | TI.com

UCC1806 (ACTIVE)

Low Power, Dual Output, Current Mode PWM Controller

Low Power, Dual Output, Current Mode PWM Controller - UCC1806
 

Description

The UCC3806 family of BiCMOS PWM controllers offers exceptionally improved performance with a familiar architecture. With the same block diagram and pinout of the popular UC3846 series, the UCC3806 line features increased switching frequency capability while greatly reducing the bias current used within the device. With a typical startup current of 50µA and a well defined voltage threshold for turn-on, these devices are favored for applications ranging from off-line power supplies to battery operated portable equipment. Dual high current, MOSFET driving outputs and a fast current sense loop further enhance device versatility.

All the benefits of current mode control including simpler loop closing, voltage feed-forward, parallelability with current sharing, pulse-by-pulse current limiting, and push-pull symmetry correction are readily achievable with the UCC3806 series.

These devices are available with multiple package options for both through-hole and surface mount applications; and in commercial, industrial, and military temperature ranges.

The UCC3806 is specified for operation from –55°C to +125°C, the UCC2806 is specified for operation from –40°C to +85°C, and the UCC3806 is specified for operation from 0°C to +70°C.

Features

  • BiCMOS Version of UC3846 Families
  • 1.4-mA Maximum Operating Current
  • 100-µA Maximum Startup Current
  • ±0.5-A Peak Output Current
  • 125-ns Circuit Delay
  • Easier Parallelability
  • Improved Benefits of Current Mode Control

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)
UCC1806
Current    
6.75    
15    
Boost
Flyback
Forward    
50    
1000    
7.5/6.75    
Error Amplifier
Soft Start
Synchronization Pin    
Military    
-55 to 125    
CDIP
LCCC    
See datasheet (CDIP)
20LCCC: 79 mm2: 8.89 x 8.89(LCCC)    

Other qualified versions of UCC1806

Version Part Number Definition
Catalog UCC3806 TI's standard catalog product
Space UCC1806-SP Radiation tolerant, ceramic packaging and qualified for use in Space-based application