UCC3808-1 Low Power Current Mode Push-Pull PWM | TI.com

UCC3808-1 (ACTIVE)

Low Power Current Mode Push-Pull PWM

 

Description

The UCCx808-x is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCCx808 contains all of the control and drive circuitry required for offline or DC-to-DC fixed frequency current-mode switching power supplies with minimal external parts count.

The UCCx808-x dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%.

Features

  • Dual Output Drive Stages in Push-Pull
    Configuration
  • 130-µA Typical Starting Current
  • 1-mA Typical Run Current
  • Operation to 1-MHz
  • Internal Soft-Start
  • On-Chip Error Amplifier With 2-MHz Gain
    Bandwidth Product
  • On-Chip VDD Clamping
  • Output Drive Stages Capable Of 500-mA Peak
    Source Current, 1-A Peak Sink Current

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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)
UCC3808-1 UCC3808-2 UCC3808A-1 UCC3808A-2
Push-Pull     Push-Pull     Push-Pull     Push-Pull    
Current     Current     Current     Current    
13     5     13     5    
14     14     14     14    
1000     1000     1000     1000    
12.5/8.3     4.3/4.1     12.5/8.3     4.3/4.1    
49     49     49     49    
1     1     1     1    
Error Amplifier
Multi-topology
Soft Start    
Error Amplifier
Multi-topology
Soft Start    
Error Amplifier
Multi-topology
Soft Start    
Error Amplifier
Multi-topology
Soft Start    
Catalog     Catalog     Catalog     Catalog    
0 to 70     0 to 70     0 to 70     0 to 70    
PDIP | 8
SOIC | 8    
PDIP | 8
SOIC | 8    
PDIP | 8
SOIC | 8    
PDIP | 8
SOIC | 8
TSSOP | 8    
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)    
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)    
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)    
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)