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TPS650240

TPS650241

TPS650242

SLVS774 – JUNE 2007

Power Management ICs for Li-Ion Powered Systems

• PDA

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

Converter for System Voltage (VDCDC1)

• Cellular/Smart Phone

• GPS

–

3.3V or 2.80V or Adjustable

• Digital Still Camera

• 1.0A or 0.8A, up to 95% Efficient Step-Down

• Split Supply DSP and μP Solutions:, Samsung

Converter for Memory Voltage (VDCDC2)

ARM-Based Processors, etc.

–

1.8V or 2.5V or Adjustable

• 0.8A, 90% Efficient Step-Down Converter for

Processor Core (VDCDC3)

The TPS65024x are integrated Power Management

• Two Selectable Voltages for VDCDC3

ICs for applications powered by one Li-Ion or

–

TPS650240:

Li-Polymer cell, which require multiple power rails.

–

DEFDCDC3= LOW: Vo = 1.0V

The

TPS65024x

provide

three

highly

efficient,

step-down converters targeted at providing the core

–

DEFDCDC3= HIGH: Vo = 1.3V

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

–

TPS650241:

processor

based

system.

All

three

step-down

–

DEFDCDC3= LOW: Vo = 0.9V

converters enter a low power mode at light load for

maximum efficiency across the widest possible range

–

DEFDCDC3= HIGH: Vo = 1.375V

of load currents. The converters can be forced into

–

TPS650242:

fixed frequency PWM mode by pulling the MODE pin

–

DEFDCDC3= LOW: Vo = 1.0V

high. The TPS65024x also integrate two general

purpose 200 mA LDO voltage regulators, which are

–

DEFDCDC3= HIGH: Vo = 1.5V

enabled with an external input pin. Each LDO

• 30mA LDO for Vdd_alive

operates with an input voltage range between 1.5 V

• 2 × 200 mA General Purpose LDOs (LDO1 and

and 6.5 V allowing them to be supplied from one of

LDO2)

the step-down converters or directly from the battery.

The output voltage of the LDOs can be set with an

• Dynamic Voltage Management for Processor

external resistor divider for maximum flexibility.

Core

Additionally there is a 30mA LDO typically used to

• LDO1 and LDO2 Voltage Externally Adjustable

provide power in a processor based system to a

• Separate Enable Pins for Inductive Converters

voltage rail that is always on. TPS65024x provide

voltage scaling on DCDC3 using the DEFDCDC3

• 2.25 MHz Switching Frequency

pin. This pin either needs to be connected to a logic

• 85 μA Quiescent Current

HIGH or logic LOW level to set the output voltage of

• Thermal Shutdown Protection

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

32 pin QFN package (RHB).

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 © 2007, 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.