MP5403

Configurable 2.7V-6V Mini PMIC

with Dual 2.5A/3.5A Buck, One Load Switch,

and Input Power Supervisory

MP5403 Rev. 1.0

www.MonolithicPower.com

1

9/20/2016

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2016 MPS. All Rights Reserved.



DESCRIPTION

The

MP5403

is

a

monolithic

power

management

unit

containing

two

high-

efficiency, step-down, switching converters and

a load switch. The two regulators supply current

up to 3.5A and 2.5A separately, and the load

switch supplies up to 3A of load current with an

to 6V, the MP5403 is ideal for powering ASIC

and SOC for solid-state drives and other

compact power systems.

The peak-current-mode control scheme with

pulse-skip-mode operation provides the two

switchers with fast transient response, high

light-load efficiency, and minimum capacitance

by using an interleaving PWM clock between

the two switchers. The 3A load switch with a

low 20

mΩ on resistance provides flexible

system configuration.

A full set of enable control pins and power good

open-drain

indicators

allow

for

easy

implementation of the start-up and shutdown

sequences.

Full protection features include over-current

protection (OCP) and thermal shutdown.

The MP5403 requires a minimal number of

readily

available,

standard,

external

components and is available in a small UTQFN-

20 (2.5mmx3mm) package.

FEATURES

 Low I

 Two Buck Converters

o

3.5A with 55

o

2.5A with 6

o

1.5MHz Switching Frequency

o

180° Interleaving Operation

o

100% Duty Cycle

o

Load Switch Mode by Pulling FB Low

o

Latch-Off Short-Circuit Protection (SCP)

o

Parallel Capability by Connecting SW

Nodes Together

o

Internal Soft Start and Output Discharge

o

Optimized Light-Load Efficiency

 Available Fixed Output Options via Package

Trim:

Ch1: 0.9V, 1.1V, 2.5V, 2.85V

Ch2: 0.9V, 1.2V, 1.8V, 2.5V

 One Load Switch

o

3A with 20

o

Soft Start and Output Discharge

o

Over-Current Protection (OCP)

 EN and Power Good for Power Sequencing

 Input Power Failure Indicator (PFL) with

Adjustable Threshold and Delay

 Thermal Shutdown

 Available in Ultra-Thin UTQFN-20

(2.5mmx3mm) Package

APPLICATIONS

 Solid-State Drives

 Hybrid Drives

 Low Voltage System Power

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For

MPS

green

status,

please

visit

the

MPS

website

under

Quality

Assurance.

“MPS” and “The Future of Analog IC Technology” are registered

trademarks of Monolithic Power Systems, Inc.