TPS61045 采用 QFN-8 封装的 28V 85% 效率的升压转换器,用于 LCD 应用领域 | 德州仪器 TI.com.cn

TPS61045 (正在供货)

采用 QFN-8 封装的 28V 85% 效率的升压转换器,用于 LCD 应用领域

采用 QFN-8 封装的 28V 85% 效率的升压转换器,用于 LCD 应用领域 - TPS61045
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备选器件推荐

  • TPS61046  -  For applications requiring smaller package or True Disconnection

描述

The TPS61045 device is a high-frequency boost converter with digitally-programmable output voltage and true shutdown. During shutdown, the output is disconnected from the input by opening the internal input switch. This allows a controlled power-up and power-down sequencing of the display. The output voltage can be increased or decreased in digital steps by applying a logic signal to the CTRL pin. The output voltage range, as well as the output voltage step size, can be programmed with the feedback divider network. With a high switching frequency of up to 1 MHz, the TPS61045 device allows the use of small external components, and together, with the small 8-pin VSON package, a minimum system solution size is achieved.

特性

  • Input Voltage Range from 1.8 to 6 V
  • Output Voltage of up to 28 V Possible
  • Up to 85% Efficiency
  • Digitally Adjustable Output Voltage Control
  • Disconnects Output From Input During Shutdown
  • Switching Frequency up to 1 MHz
  • No Load Quiescent Current 40 µA Typical
  • Thermal Shutdown Mode
  • Shutdown Current 0.1 µA Typical
  • Available in Small 3-mm × 3-mm VSON Package

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参数 与其它产品相比 升压转换器 (集成开关)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switch Current Limit (Typ) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
TPS61045 TPS61040 TPS61041 TPS61046 TPS61096A
1.8     1.8     1.8     1.8     1.8    
6     6     6     5.5     5.5    
1.8     1.8     1.8     4.5     4.5    
28     28     28     28     28    
  0.4     0.25     0.9     0.5    
      1     1    
      850      
1000     1000     1000     1250      
0.04     0.028     0.028     0.11     0.001    
Enable
Load Disconnect    
Enable     Enable     Enable
Light Load Efficiency
Load Disconnect    
Adjustable Current Limit
Enable
Light Load Efficiency    
88     88     88     90     90    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
Catalog     Catalog     Catalog     Catalog     Catalog    
SON     SOT-23
SOT-23-THIN
WSON    
SOT-23
WSON    
DSBGA     WSON    

特色工具和软件

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WEBENCH® Designer TPS61045

  最小   最大 范围
输入电压  V 1.8 to 6.0V
输出电压  V 1.8 to 28V
输出电流  A ≤ 0.6A
环境温度  °C -40 to 85°C


覆盖面积 BOM成本 效率


Preview design