General Description

The MAX8952 high-efficiency DC-to-DC step-down

switching regulator delivers up to 2.5A of output current.

The device operates from a 2.5V to 5.5V input voltage

range, supporting commonly-used battery technologies

from 0.77V to 1.40V. Remote sense ensures precise DC

regulation at the load. Total output error is less than

±1.5% over load, line, and temperature.

The IC operates at a 3.25MHz fixed frequency. The high

operating frequency minimizes the size of external com-

ponents. The switching frequency of the converter can be

synchronized to the master clock of the application. When

synchronizing to an external clock, the IC measures the

frequency of the external clock to ensure that the clock is

stable before changing the switching frequency to the

external clock frequency.

An on-board DAC allows adjustment of the output volt-

age in 10mV steps. The output voltage can be pro-

preloading a set of on-board registers and using the

two VID logic signals to select the appropriate register.

Other features include internal soft-start control circuitry

to reduce inrush current, output overvoltage, overcur-

rent, and overtemperature protection.

Applications

Cell Phones and Smartphones

PDAs and MP3 Players

Tablet PCs

Features

o 2.5A Guaranteed Output Current

Steps)

o Initial Accuracy ±0.5% at 1.40V Output

o ±1.5% Output Accuracy Over Load, Line, and

Temperature (DCR

o Power-Save Mode Increases Light Load Efficiency

o Fixed 3.25MHz PWM Switching Frequency

o Small 1.0µH Inductor

o Synchronizes to 13MHz, 19.2MHz, or 26MHz

System Clock When Available

o Overvoltage and Overcurrent Protection

o Operates from 2.5V to 5.5V Input Supply

o Thermal Shutdown Protection

o On-Chip FET and Synchronous Rectifier

o < 1µA Shutdown Current

o 16-Bump, 2mm x 2mm WLP Package

2.5A Step-Down Regulator

with Remote Sense in 2mm x 2mm WLP

________________________________________________________________

Maxim Integrated Products

1

19-5318; Rev 1; 6/11

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX8952EWE+T

-40°C to +85°C

16-Bump WLP

(0.5mm pitch)

+

Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

Bump Configuration

+

WLP 0.5mm PITCH

B2

B4

C4

B3

B1

A4

A3

A2

A1

D4

C1

D1

C3

C2

D3

D2

IN1

AGND

IN2

EN

LX

LX

SNS-

VID0

PGND

PGND

SDA

SCL

SYNC

VID1

SNS+

TOP VIEW

(BUMPS ON BOTTOM)

Typical Operating Circuit

2.5V TO

5.5V

(0.77V TO

1.40V)

LX

IN2

SCL

1.8V TO

3.6V

2.5V TO

5.5V

11

Ω

0.1

μF

10

μF

0.1

μF

0.1

μF

10

μF

10

μF

SDA

IN1

SYNC

PGND

SNS+

SNS-

EN

VID0

VID1

AGND

MAX8952

1

μH

CPU

0.1

μF

2.2

μF