TPS61081 具有集成功率二极管的 27V、1.2A 开关、1.2MHz 升压转换器 | 德州仪器 TI.com.cn

TPS61081 (正在供货)

具有集成功率二极管的 27V、1.2A 开关、1.2MHz 升压转换器

 

描述

The TPS6108x is a 1.2 MHz/600 kHz fixed-frequency boost regulator designed for high integration, which integrates a power switch, an I/O isolation switch, and a power diode. When a short-circuit condition is detected, the isolation switch opens up to disconnect the output from the input. As a result, the IC protects itself and the input source from any pin, except VIN, from being shorted to ground. The isolation switch also disconnects the output from input during shutdown to prevent any leakage current. Other provisions for protection include 0.5 A/1.3 A peak-to-peak overcurrent protection, programmable soft start (SS), over voltage protection (OVP), thermal shutdown, and under voltage lockout (UVLO).

The IC operates from input supplies including single Li-ion battery, triple NiMH, and regulated 5 V, such as USB output. The output can be boosted up to 27 V. TPS6108x can provide the supply voltages of OLED, TFT-LCD bias, 12-V and 24-V power rails. The output of TPS6108x can also be configured as a current source to power up to seven WLEDs in flash light applications.

特性

  • 2.5-V to 6-V Input Voltage Range
  • Up to 27-V Output Voltage
  • 0.5-A Integrated Switch (TPS61080)
    1.3-A Integrated Switch (TPS61081)
  • 12-V/400-mA and 24-V/170-mA
    From 5-V (Typical)
  • Integrated Power Diode
  • 1.2-MHz/600-kHz Selectable Fixed
    Switching Frequency
  • Input-to-Output Isolation
  • Short-Circuit Protection
  • Programmable Soft Start
  • Overvoltage Protection
  • Up to 87% Efficiency
  • 10-Pin 3-mm × 3-mm QFN Package

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参数 与其它产品相比 背光LED驱动器

 
Channels (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switching Frequency (Max) (kHz)
Type
LED Current Per Channel (mA)
LED (#)
Topology
Shutdown Current (Typ) (uA)
Peak Efficiency (%)
LED Configuration
Features
Operating Temperature Range (C)
Pin/Package
TPS61081 TPS61080
1     1    
2.5     2.5    
6     6    
2.7     2.7    
27     27    
1200     1200    
Inductive     Inductive    
100     50    
1 OLED or 7     1 OLED or 7    
Boost     Boost    
1     1    
87     87    
Series     Series    
Synchronous Rectification     Synchronous Rectification    
-40 to 85     -40 to 85    
10VSON     10VSON