1 Features

1• Step-Down Converters:

– V IN Range From 2.3 V to 6 V

– Spread Spectrum Clock (SSC) Generation for

Reduced EMI

– 2.25-MHz Fixed Frequency Operation

– 600-mA or 1-A (TPS650061) Output Current

• Low Dropouts (LDOs):

– VIN Range From 1.6 V to 6 V

– Adjustable Output Voltage

– Up to 300-mA Output Current

– Separate Power Inputs and Enables

• Supply Voltage Supervisor (TPS65001)

– Manual Reset Input for Push Button

– Adjustable Reset Time

– Adjustable Reset Voltage

• 3-mm × 3-mm 16-Pin WQFN (TPS65000)

• 3-mm × 3-mm 20-Pin WQFN (TPS65001)

2 Applications

• Points-of-Load

• Embedded Processor Power

• Cell Phones

• Smart Phones

• PDAs

• Pocket PCs

• Portable Media Players

3 Description

The TPS6500xx devices are single-chip power

management (PWM) ICs for portable applications.

Both devices combine a single step-down converter

with two low-dropout (LDO) regulators. The step-

down converter enters a low-power mode at light load

for maximum efficiency across the widest possible

range of load currents. For low-noise applications, the devices can be forced into fixed-frequency PWM

through a pin. The step-down converter is small

because of its small inductor and capacitors. The

step-down converter has power good status output for sequencing. The LDOs can supply 300 mA and

operate with an input voltage range from 1.6 V to 6 V.

A step-down converter or main battery can power the

LDOs directly. The step-down converter and the LDOs have separate voltage inputs that enable

maximum design and sequencing flexibility.