UCC2808-1 低功耗电流模式推拉 PWM | 德州仪器 TI.com.cn

UCC2808-1 (正在供货) 低功耗电流模式推拉 PWM

低功耗电流模式推拉 PWM - UCC2808-1
数据表
 

描述

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%.

特性

  • 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

参数

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Part number 立即下单 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)
UCC2808-1 立即下单 Push-Pull     Current     13     14     1000     12.5/8.3     49     1     Error Amplifier
Multi-topology
Soft Start    
Catalog     -40 to 85     PDIP | 8
SOIC | 8    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
UCC2808-2 立即下单 Push-Pull     Current     5     14     1000     4.3/4.1     49     1     Error Amplifier
Multi-topology
Soft Start    
Catalog     -40 to 85     PDIP | 8
SOIC | 8    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
UCC2808A-1 立即下单 Push-Pull     Current     13     14     1000     12.5/8.3     49     1     Error Amplifier
Multi-topology
Soft Start    
Catalog     -40 to 85     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)    
UCC2808A-2 立即下单 Push-Pull     Current     5     14     1000     4.3/4.1     49     1     Error Amplifier
Multi-topology
Soft Start    
Catalog     -40 to 85     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)