TPS650241-Q1, TPS650243-Q1, TPS650244-Q1

www.ti.com

SLVS994A

– SEPTEMBER 2009 – REVISED MARCH 2011

POWER MANAGEMENT ICs FOR Li-ION POWERED SYSTEMS

Check for Samples: TPS650241-Q1, TPS650243-Q1, TPS650244-Q1

1

FEATURES

APPLICATIONS

•

PDA

•

Qualified for Automotive Applications

•

Cellular/Smart Phone

•

1.6-A, 1.0-A or 0.8-A, 97% Efficient Step-Down

•

GPS

Converter for System Voltage (VDCDC1)

•

Digital Still Camera

– 3.3-V or 2.80-V or Adjustable

•

Split Supply DSP and Microprocessor

•

1.6-A, 1.0-A or 0.8-A, up to 95% Efficient

Solutions: Samsung ARM-Based Processors,

Step-Down Converter for Memory Voltage

etc.

(VDCDC2)

– 1.8 V or 2.5 V or Adjustable

DESCRIPTION

•

0.8-A 90% Efficient Step-Down Converter for

The TPS65024x are integrated Power Management

Processor Core (VDCDC3)

ICs for applications powered by one Li-Ion or

Li-Polymer cell, which require multiple power rails.

•

Three Selectable Voltages for VDCDC3

The

TPS65024x

provide

three

highly

efficient,

– TPS650241

step-down converters targeted at providing the core

voltage, peripheral, I/O and memory rails in a

processor

based

system.

All

three

step-down

converters enter a low power mode at light load for

– TPS650243

maximum efficiency across the widest possible range

of load currents. The converters can be forced into

fixed frequency PWM mode by pulling the MODE pin

high. The TPS65024x also integrate two general

– TPS650244

purpose 200-mA LDO voltage regulators, which are

enabled with an external input pin. Each LDO

operates with an input voltage range between 1.5 V

and 6.5 V, allowing them to be supplied from one of

•

30-mA LDO for Vdd_alive

the step-down converters or directly from the battery.

•

Two 200-mA General Purpose LDOs (LDO1

The output voltage of the LDOs can be set with an

and LDO2)

external

resistor

divider

for

maximum

flexibility.

•

Dynamic Voltage Management for Processor

Additionally there is a 30-mA LDO typically used to

provide power in a processor based system to a

Core

voltage rail that is always on. TPS65024x provide

•

LDO1 and LDO2 Voltage Externally Adjustable

voltage scaling on DCDC3 using the DEFDCDC3 pin.

•

Separate Enable Pins for Inductive Converters

This pin either needs to be connected to a logic HIGH

or logic LOW level to set the output voltage of

•

2.25-MHz Switching Frequency

DCDC3. TPS65024x come in a small 5-mm x 5-mm

•

85-

μA Quiescent Current

32-pin QFN package (RHB).

•

Thermal Shutdown Protection

ORDERABLE PART NUMBER

TOP-SIDE MARKING

TPS650241QRHBRQ1

TPS650241Q

–40°C to 125°C

QFN

– RHB

Reel of 3000

TPS650243QRHBRQ1

TPS650243Q

–40°C to 85°C

TPS650244IRHBRQ1

TPS650244Q

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2)

Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2009–2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.