Texas Instruments TPS61131

Description

The TPS6113x devices provide a complete power supply solution for products powered by either a one-cell Li-Ion or Li-Polymer, or two- to four-cell Alkaline, NiCd, or NiMH batteries. The devices can generate two regulated output voltages. It provides a simple and efficient buck-boost solution for generating 3.3 V out of an input voltage that can be both higher and lower than the output voltage. The converter provides a maximum output current of at least 300 mA with supply voltages down to 1.8 V. The implemented SEPIC 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 SEPIC switch is limited to a value of 1600 mA.

Features

• Synchronous, Up To 90% Efficient, SEPIC Converter With 300-mA Output Current From 2.5-V Input
• Integrated 200-mA Reverse Voltage Protected
• LDO for DC/DC Output Voltage Post
• Regulation or Second Output Voltage
• 40-mA (Typical) Quiescent Current
• Input Voltage Range: 1.8-V to 5.5-V
• Fixed and Adjustable Output Voltage Options up to 5.5-V
• Power Save Mode for Improved Efficiency at Low Output Power
• Low Battery Comparator
• Power Good Output
• Low EMI-Converter (Integrated Antiringing Switch)
• Load Disconnect During Shutdown
• Overtemperature Protection
• Available in a Small 4mm x 4mm QFN-16 or in a TSSOP-16 Package

Typical applications

• High Efficient Li-Ion to 3.3-V Conversion
• All Single Cell Li, Dual or Triple Cell Battery USB Powered Products as MP-3 Player, PDAs,

More information

• Datasheet
• IC product information