TPS60203DGS.A中文资料德州仪器数据手册PDF规格书

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.