TPS61041 采用 SOT-23 封装用于 LCD 和白光 LED 的 28V 250mA 开关升压转换器 | 德州仪器 TI.com.cn

TPS61041 (正在供货)

采用 SOT-23 封装用于 LCD 和白光 LED 的 28V 250mA 开关升压转换器

采用 SOT-23 封装用于 LCD 和白光 LED 的 28V 250mA 开关升压转换器 - TPS61041
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备选器件推荐

  • TPS61046  -  For applications requiring smaller package or True Disconnection

描述

The TPS6104x is a high-frequency boost converter dedicated for small to medium LCD bias supply and white LED backlight supplies. The device is ideal to generate output voltages up to 28 V from a dual-cell NiMH/NiCd or a single-cell Li-Ion battery. The part can also be used to generate standard 3.3-V or 5-V to 12-V power conversions.

The TPS6104x operates with a switching frequency up to 1 MHz. This frequency allows the use of small external components using ceramic as well as tantalum output capacitors. Together with the thin WSON package, the TPS6104x gives a very small overall solution size. The TPS61040 device has an internal 400-mA switch current limit, while the TPS61041 device has a 250-mA switch current limit, offering lower output voltage ripple and allows the use of a smaller form factor inductor for lower power applications. The low quiescent current (typically 28 µA) together with an optimized control scheme, allows device operation at very high efficiencies over the entire load current range.

特性

  • 1.8-V to 6-V Input Voltage Range
  • Adjustable Output Voltage Range up to 28 V
  • 400-mA (TPS61040) and 250-mA (TPS61041) Internal Switch Current
  • Up to 1-MHz Switching Frequency
  • 28-µA Typical No-Load Quiescent Current
  • 1-µA Typical Shutdown Current
  • Internal Soft Start
  • Available in SOT23-5, TSOT23-5, and 2-mm × 2-mm × 0.8-mm WSON Packages

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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)
Type
Rating
Package Group
TPS61041 TLV61046A TPS61040 TPS61045 TPS61046 TPS61096A
1.8     1.8     1.8     1.8     1.8     1.8    
6     5.5     6     6     5.5     5.5    
1.8     3.3     1.8     1.8     4.5     4.5    
28     28     28     28     28     28    
0.25     0.9     0.4       0.9     0.5    
  1         1     1    
  850         850      
1000     1250     1000     1000     1250      
0.028     0.11     0.028     0.04     0.11     0.001    
Enable     Enable
Light Load Efficiency
Load Disconnect    
Enable     Enable
Load Disconnect    
Enable
Light Load Efficiency
Load Disconnect    
Adjustable Current Limit
Enable
Light Load Efficiency    
88       88     88     90     90    
-40 to 85     -40 to 125     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
Converter     Converter     Converter     Converter     Converter     Converter    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
SOT-23 | 5
WSON | 6    
SOT-23 | 6     SOT-23-THIN | 5
SOT-23 | 5
WSON | 6    
SON | 8     DSBGA | 6     WSON | 12    
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WEBENCH® Designer TPS61041

  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 ≤ 0.25A
环境温度  °C -40 to 85°C


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