TPS61071-Q1

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.

.

Qualified for Automotive Applications

.

AEC-Q100 Qualified With the Following Results:

.

Device Temperature Grade 2: –40°C to 105°C

Ambient Operating Temperature Range

.

Device HBM Classification Level 1C

.

Device CDM Classification Level C6

.

90% Efficient Synchronous Boost Converter

.

75-mA Output Current at 3.3 V From 0.9-V

Input

.

150-mA Output Current at 3.3 V From 1.8-V

Input

.

Device Quiescent Current: 19 µA Typical

.

Input Voltage Range: 0.9 V to 5.5 V

.

Adjustable Output Voltage Up to 5.5 V

.

Power-Save Mode Version Available for

Improved Efficiency at Low Output Power

.

Load Disconnect During Shutdown

.

Overtemperature Protection

.

Small 6-Pin Thin SOT Package