具有600mA开关90 ％效率同步升压转换器 90% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 600-mA SWITCH
The device provides a power supply solution for products powered by lower-voltage DC rails or a one-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-ion or Li-polymer battery. Output currents can go as high as 75 mA, while using a single-cell alkaline, and discharge down to 0.9 V. The device can also generate 5 V at 200 mA from a 3.3-V rail or a Li-ion battery. The boost converter is based on a fixed frequency, pulse-width-modulation PWM controller using a synchronous rectifier to obtain maximum efficiency. The maximum peak current in the boost switch is limited typically to a value of 600 mA.
The TPS61071-Q1 output voltage is programmed by an external resistor divider. To minimize battery drain, disable the converter. During shutdown, the load disconnects from the battery. The device package is a 6-pin thin SOT package DDC.
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- Qualified for Automotive Applications
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- AEC-Q100 Qualified With the Following Results:
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- Device Temperature Grade 2: –40°C to 105°C
Ambient Operating Temperature Range
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- Device HBM Classification Level 1C
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- Device CDM Classification Level C6
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- 90% Efficient Synchronous Boost Converter
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- 75-mA Output Current at 3.3 V From 0.9-V
Input
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- 150-mA Output Current at 3.3 V From 1.8-V
Input
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- Device Quiescent Current: 19 µA Typical
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- Input Voltage Range: 0.9 V to 5.5 V
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- Adjustable Output Voltage Up to 5.5 V
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- Power-Save Mode Version Available for
Improved Efficiency at Low Output Power
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- Load Disconnect During Shutdown
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- Overtemperature Protection
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- Small 6-Pin Thin SOT Package