MAX8967 Datasheet, PDF(1/59 Page) Maxim Integrated Products – Dual 2A Step-Down Converters with 6 LDOs for Baseband and Applications Processor

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

MAX8967 Datasheet, PDF (1/59 Pages) Maxim Integrated Products – Dual 2A Step-Down Converters with 6 LDOs for Baseband and Applications Processor

EVALUATION KIT AVAILABLE

MAX8967

Dual 2A Step-Down Converters with 6 LDOs

for Baseband and Applications Processor

General Description

The MAX8967 is an FPMIC with two DC-to-DC step-

down switching converters and six remote capaci-

tor-capable LDOs. The step-down converters deliv-

er up to 2A of output current independently. Two

of the LDOs deliver a load current up to 300mA,

while the remaining four deliver up to 150mA. Both

step-down converters have remote sense, allowing loads

to be placed away from the IC. The IC operates over a

2.6V to 5.5V input supply range.

Fixed-frequency 4.4MHz PWM operation and clocks that

are 180N out of phase permit the use of small external

components. Under light load conditions, the step-down

converters automatically switch to skip mode operation.

In skip mode operation, switching occurs only as need-

ed, allowing efficient operation. Placing either of the step-

down converters into green mode reduces the quiescent

current consumption of that converter to 5FA (typ).

The IC supports dynamic adjustment of the output

voltage through its I2C interface. Each step-down

converter has two register settings for output voltage and

a setting for ramp rate. Also, each step-down converter

has a dedicated enable pin and a dedicated VID pin to

toggle between the two programmed output voltages.

Additionally, an interrupt output is provided, allowing the

IC to signal its master.

Typical Operating Circuit

INPUT

2.6V TO 5.5V

1.7V TO 5.5V

1.65V TO 5.5V

I2C

IN1

OUT1

IN2

LX1

PGND1

INA

OUT2

INB

AGND

LX2

MAX8967

VIO

PGND2

SCL

LDO1

SDA

LDO2

EN1

LDO3

EN2

VID1

LDO4

VID2

LDO5

IRQB

LDO6

OUT1

1ÂµH

0.6V TO

3.3875V,

OUT2

1ÂµH

0.6V TO

3.3875V,

0.8V TO 3.95V, 150mA

0.8V TO 3.95V, 300mA

0.8V TO 3.95V, 150mA

0.8V TO 3.95V, 300mA

0.8V TO 3.95V, 150mA

Benefits and Features

S Multi-Output PMIC in a Compact Package

ï² Two 2A Step-Down Converters with Remote

Output Voltage Sensing

ï² Two 300mA LDOs

ï² Four 150mA LDOs

ï² < 1ÂµA Shutdown Current

ï² 2.32mm x 2.44mm Package

S Versatile Step-Down Converters

ï² Programmable Output Voltage (0.6V to 3.3875V)

Through I2C Bus

ï² Programmable Output Voltage Slew Rate

(12.5mV/Âµs to 50mV/Âµs)

ï² Dynamic Switching Between Two Output

Voltages Through VID_ Pins

S Efficient Step-Down Converters

ï² Over 95% Efficiency with Internal Synchronous

Rectifier

ï² Automatic Skip Mode at Light Loads

ï² Low 61ÂµA (typ) Quiescent Current

ï² 5ÂµA (typ) Green Mode per Step-Down Converter

S Programmable LDOs

ï² Programmable Output Voltage (0.8V to 3.95V in

50mV Steps)

ï² Programmable Soft-Start Slew Rate

(5mV/Âµsâ100mV/Âµs)

S Reduces Component Size and Board Area Solution

ï² 4.4MHz Step-Down Switching Allows for 1ÂµH

Inductors

ï² COUT = 1ÂµF for All LDOs

ï² Reduced Board Space with Remote Capacitor

LDOs

ï² Internal Feedback for Step-Down Converters

and LDOs

Applications

Cellular Handsets and Smartphones

Tablets

Portable Devices

Ordering Information appears at end of data sheet.

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may

be simultaneously available through various sales channels. For information about device errata, go to: www.maximintegrated.com/errata.

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integratedâs website at www.maximintegrated.com.

19-6534; Rev 0; 12/12

▷