1

FEATURES

APPLICATIONS

L2

ENABLE

VCC

FB_DCDC2

PGND2

AGND

ENABLE

ENABLE

VLDO2

200 mA LDO

VLDO2

VLDO3

DCDC1(I/O)

VINDCDC1/2

L1

PGND1

DCDC2(core)

VLDO1

400 mA LDO

VLDO3

200 mA LDO

VIN

ENABLE

VIN

10uF

10 W

TPS 65058

ENABLE

MODE

RESET

RESET

R19

I/OVoltage

VLDO1

VIN

VIN

3.3 V

PGOOD1

PGOOD2

Voltage

Switching(1/0)

2.2 F

m

Voltage

Switching(1/0)

2.2 F

m

1 F

m

EN_DCDC1

EN_DCDC2

DEF_DCDC2

VIN_LDO1

EN_LDO1

DEF_LDO

VIN_LDO2/

EN_LDO2

EN_LDO3

STEP-DOWN

CONVERTER

STEP-DOWN

CONVERTER

22 F

m

2.2 H

m

FB_DCDC

2.2 H

m

1.8V/1.2V

10 F

m

3.3V/3.3V

4.7 F

m

1.8V/1.2V

1.8V/1.3V

2.2 F

m

2.2 F

m

DESCRIPTION

TPS65058

2.25 MHz Dual STEP DOWN CONVERTER

WITH 3 LOW-INPUT VOLTAGE LDOs

• Satellite Radio Modules

2

• Up To 95% Efficiency

• Output Current for DC/DC Converters:

–

DCDC1 = 0.6A; DCDC2 = 1A

• V

2.5V to 6V

• Dynamic Voltage Switching for Processor

Core Supply Supported

• 2.25MHz Fixed Frequency Operation

• Power Save Mode at Light Load Current

• 180° Out-of-Phase Operation

• Output Voltage Accuracy in PWM mode ±1%

• Total Typical 32µA Quiescent Current for Both

DC/DC Converters

• 100% Duty Cycle for Lowest Dropout

• One General-Purpose 400mA LDO

• Two General-Purpose 200mA LDOs

• V

• Reset Generator and Power Monitor

• Available in a 4 mm x 4 mm 24-Pin QFN

Package

NOTE: Other voltage options available upon

request.

Contact

your

Texas

Instruments representative.

The TPS65058 is an integrated Power Management IC for applications powered by one Li-Ion or Li-Polymer cell,

which require multiple power rails. The TPS65058 provides two highly efficient, 2.25MHz step down converters

targeted at providing the core voltage and I/O voltage in a processor based system. Both step-down converters

enter 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 mode by pulling the MODE pin

high. Both converters allow the use of small inductors and capacitors to achieve a small solution size. TPS65058

provides an output current of up to 0.6A on the DCDC1 converter, and up to 1A on the DCDC2 converter. The

TPS65058 also integrates one 400mA LDO and two 200mA LDO voltage regulators, which can be turned on/off

using separate enable pins on each LDO. Each LDO operates with an input voltage range between 1.5V and

6.5V allowing them to be supplied from one of the step down converters or directly from the main battery.

The TPS65058 comes in a small 24-pin leadless package (4mm × 4mm QFN) with a 0,5mm pitch.

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.

2

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, 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.