CSP-6

VIN

SW

FB

MODE

EN

GND

2.85 V @ 500mA

C

4.7 F

I

m

TPS62690

L

1.0 H

m

C

4.7 F

O

m

3.15 V .. 4.8 V

50

55

60

65

70

75

80

85

90

95

100

0.1

1

10

100

1000

0

15

30

45

60

75

90

105

120

135

150

I

- Load Current - mA

O

V = 3.6 V,

V

= 2.85 V

I

O

Efficiency

PFM/PWM Operation

Power Loss

PFM/PWM Operation

TPS62690

TPS62691

TPS62697

www.ti.com

SLVS965B

– MARCH 2011 – REVISED JANUARY 2012

500-mA / 600-mA, 4-MHz HIGH-EFFICIENCY STEP-DOWN

CONVERTER IN CHIP SCALE PACKAGING

Check for Samples: TPS62690, TPS62691, TPS62697

1

FEATURES

APPLICATIONS

2

•

95% Efficiency at 4MHz Operation

•

LDO Replacement

•

19

μA Quiescent Current

•

Cell Phones, Smart-Phones

•

4MHz Regulated Frequency Operation

•

Portable Audio, Portable Media

•

High Duty-Cycle Operation

•

DC/DC Micro Modules

•

±2% Total DC Voltage Accuracy

DESCRIPTION

•

Best in Class Load and Line Transient

The

TPS6269x

device

is

a

high-frequency

•

Excellent AC Load Regulation

synchronous step-down dc-dc converter optimized for

•

Low Ripple Light-Load PFM Mode

battery-powered portable applications. Intended for

low-power applications, the TPS6269x supports up to

•

600-mA load current, and allows the use of low cost

•

Internal Soft Start, 250-

μs Start-Up Time

chip inductor and capacitors.

•

Integrated Active Power-Down Sequencing

The device is ideal for mobile phones and similar

(Optional)

portable applications powered by a single-cell Li-Ion

•

Current Overload and Thermal Shutdown

battery. Different fixed voltage output versions are

Protection

available from 2.2V to 2.9V.

•

Three Surface-Mount External Components

The TPS6269x operates at a regulated 4-MHz

Required (One 2012 MLCC Inductor, Two 0402

switching frequency and enters the power-save mode

Ceramic Capacitors)

operation at light load currents to maintain high

•

Complete Sub 1-mm Component Profile

efficiency over the entire load current range.

Solution

The PFM mode extends the battery life by reducing

•

Total Solution Size

the quiescent current to 19

μA (typ) during light load

operation. For noise-sensitive applications, the device

•

Available in a 6-Pin NanoFree

™ (CSP)

can be forced into fixed frequency PWM mode by

pulling the MODE pin high. This feature, combined

with high PSRR and AC load regulation performance,

make this device suitable to replace a linear regulator

to obtain better power conversion efficiency.

Figure 2. Smallest Solution Size Application

Figure 1. Efficiency vs. Load Current

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 is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2011–2012, 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.