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1 Features

1? Regulated 3.3-V Output Voltage With up to

100-mA Output Current From a 1.8-V to 3.6-V

Input Voltage

? Less Than 5-mV (PP) Output Voltage Ripple

Achieved With Push-Pull Topology

? Integrated Low-Battery and Power-Good Detector

? Switching Frequency Can Be Synchronized to

External Clock Signal

? Extends Battery Usage With up to 90% Efficiency

and 35-μA Quiescent Supply Current

? Reliable System Shutdown Because Output

Capacitor Is Discharged When Device Is Disabled

? Easy-to-Design, Low-Cost, Low-EMI Power

Supply Since No Inductors Are Used

? 0.05-μA Shutdown Current, Battery Is Isolated

From Load in Shutdown Mode

? Compact Converter Solution in UltraSmall 10-pin

MSOP With Only Four External Capacitors

Required

? Evaluation Module Available (TPS60200EVM-145)

2 Applications

? Two Battery Cells to 3.3-V Conversion

? MP3 Portable Audio Players

? Battery-Powered Microprocessor Systems

? Backup-Battery Boost Converters

? PDAs, Organizers, and Cordless Phones

? Handheld Instrumentation

? Glucose Meters and Other Medical Instruments

3 Description

The TPS6020x step-up, regulated charge pumps

generate a 3.3-V ±4% output voltage from a 1.8-V to

3.6-V input voltage. The devices are typically

powered by two Alkaline, NiCd or NiMH battery cells

and operate down to a minimum supply voltage of

1.6 V. Continuous output current is a minimum of 100

mA for the TPS60200 and TPS60201 and 50 mA for

the TPS60202 and TPS60203, all from a 2-V input.

Only four external capacitors are needed to build a

complete low-ripple DC/DC converter. The push-pull

operating mode of two single-ended charge pumps

assures the low output voltage ripple as current is

continuously transferred to the output.