1 Features

• 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

2 Applications

• Automotive Power Supplies
• Boost Power Supplies

3 Description

The TPS61071-Q1 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).

1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Circuit