1 Features

1• 96% Efficient Synchronous Boost Converter

• Output Voltage Remains Regulated When Input

Voltage Exceeds Nominal Output Voltage

• Device Quiescent Current: 25 μA (Typ)

• Input Voltage Range: 0.9 V to 6.5 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

• Low EMI-Converter (Integrated Anti-ringing

Switch)

• Load Disconnect During Shutdown

• Overtemperature Protection

• Small 3-mm × 3-mm VSON-10 Package

2 Applications

• All One-Cell, Two-Cell, and Three-Cell Alkaline,

NiCd or NiMH, or One-Cell Li-Ion or Li-Polymer

Battery-Powered Products

• Portable Audio Players

• PDAs

• Cellular Phones

• Personal Medical Products

• Camera White LED Flash Lights

3 Description

The TPS6102x family of devices provide a power

supply solution for products powered by either 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 200 mA while using a single-cell

alkaline battery, and discharge it down to 0.9 V. The

device can also be used for generating 5 V at 500 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. At low load

currents the converter enters the power save mode to

maintain a high efficiency over a wide-load current range. The Power Save mode can be disabled,

forcing the converter to operate at a fixed switching

frequency. The maximum peak current in the boost

switch is limited to a value of 800 mA, 1500 mA, or

1800 mA depending on the version of the device.

The TPS6102x devices keep the output voltage

regulated even when the input voltage exceeds the

nominal output voltage. The output voltage can be

programmed by an external resistor divider, or is

fixed internally on the chip. The converter can be

disabled to minimize battery drain. During shutdown,

the load is completely disconnected from the battery.

A low-EMI mode is implemented to reduce ringing and, in effect, lower radiated electromagnetic energy

when the converter enters the discontinuous

conduction mode. The device is packaged in a 10-pin

VSON PowerPAD™ package measuring 3 mm x 3

mm (DRC).