TPS61040 采用 SOT-23 封装用于 LCD 和白光 LED 的 28V 400mA 开关升压转换器 | 德州仪器 TI.com.cn

TPS61040 (正在供货)

采用 SOT-23 封装用于 LCD 和白光 LED 的 28V 400mA 开关升压转换器

采用 SOT-23 封装用于 LCD 和白光 LED 的 28V 400mA 开关升压转换器 - TPS61040
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  • 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)
Rating
Package Group
TPS61040 LM2621 LM2623 LM27313 LM2733 TLV61046A TPS61041 TPS61045 TPS61046 TPS61087 TPS61096A TPS61170
1.8     1.2     0.8     2.7     2.7     1.8     1.8     1.8     1.8     2.5     1.8     3    
6     14     14     14     14     5.5     6     6     5.5     6     5.5     18    
1.8     1.24     1.24     4     3     3.3     1.8     1.8     4.5     3     4.5     3    
28     14     14     28     40     28     28     28     28     18.5     28     38    
0.4     2.85     2.85     1.25     1.5     0.9     0.25       0.9     4     0.5     1.2    
  1     1     1     1     1         1     1     1     1    
    300     1150     400     850         850     900       1000    
1000     2000     2000     1900     1850     1250     1000     1000     1250     1500       1200    
0.028     0.08     0.08     2.1     1.1     0.11     0.028     0.04     0.11     0.075     0.001     2.3    
Enable     Enable     Enable     Enable
Light Load Efficiency    
Enable
Light Load Efficiency    
Enable
Light Load Efficiency
Load Disconnect    
Enable     Enable
Load Disconnect    
Enable
Light Load Efficiency
Load Disconnect    
Enable
Power Good    
Adjustable Current Limit
Enable
Light Load Efficiency    
Enable
Light Load Efficiency    
88       90     88     96       88     88     90     90     90     93    
-40 to 85     -40 to 85     -40 to 85     -40 to 125     -40 to 125     -40 to 125     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
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