CSP-9

FB

C2

4.7 F

m

L1

0.47 H

m

VIN

TPS62650

2.3V..5.5V

SW

GND

EN

VSEL

SDA

SCL

upto3.4Mbips

C1

4.7 F

m

10

20

30

40

50

60

70

80

90

100

0.1

1

10

100

1000

−

LoadCurrent

mA

0

V =3.6V

ForcedPWMOperation

I

V =4.2V

PFM/PWMOperation

I

V =3.6V

PFM/PWMOperation

I

V =2.7V

PFM/PWMOperation

I

VO =1.2V

TPS62650

TPS62651

www.ti.com

SLVS808A

– AUGUST 2009 – REVISED FEBRUARY 2011

800-mA, 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER

Check for Samples: TPS62650, TPS62651

1

FEATURES

DESCRIPTION

2

•

86% Efficiency at 6 MHz Operation

The

TPS6265x

device

is

a

high-frequency

synchronous step-down dc-dc converter optimized for

•

38

μA Quiescent Current

battery-powered portable applications. Intended for

•

low-power applications, the TPS6265x supports up to

•

6MHz Regulated Frequency Operation

800mA load current and allows the use of small, low

•

Best-In-Class Load and Line Transient

cost inductors and capacitors.

•

±2% PWM DC Voltage Accuracy

The device is ideal for mobile phones and similar

portable applications powered by a single-cell Li-Ion

•

Automatic PFM/PWM Mode Switching

battery. With an output voltage range adjustable via

•

Low Ripple Light-Load PFM

•

low-voltage

DSPs

and

processors

core

power

•

Pin-Selectable Output Voltage (VSEL)

supplies in smart-phones and handheld computers.

•

Internal Soft-Start,

<150-μs Start-Up Time

The TPS6265x operates at a regulated 6MHz

switching

frequency

and

enters

the

efficiency

•

Current Overload and Thermal Shutdown

optimized power-save mode operation at light load

Protection

currents to maintain high efficiency over the entire

•

Three Surface-Mount External Components

load current range. In the shutdown mode, the

Required (One MLCC Inductor, Two Ceramic

current consumption is reduced to less than 3.5

μA.

Capacitors)

The serial interface is compatible with Standard,

•

Complete Sub 1-mm Component Profile

Fast/Fast

Plus

and

High-Speed

mode

Solution

specification allowing transfers at up to 3.4 Mbps.

•

Total Solution Size

This communication interface is used for dynamic

voltage scaling with voltage steps down to 12.5mV,

•

Available in a 9-Pin NanoFree

™ (CSP)

for setting the output voltage or reprogramming the

Packaging

mode of operation (PFM/PWM or Forced PWM) for

instance.

APPLICATIONS

The TPS6265x is available in an 9-pin chip-scale

•

SmartReflex

™ Compliant Power Supply

package (CSP).

•

OMAP

™ Application Processor Core Supply

•

Cell Phones, Smart-Phones

•

Micro DC-DC Converter Modules

spacer

Figure 1. Typical Application

Figure 2. Efficiency vs Load Control

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

NanoFree, SmartReflex, OMAP are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

© 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.