MP2623

Stand-Alone, 2A, 1- or2-Cell

MP2623 Rev. 1.0

www.MonolithicPower.com

1

3/16/2012

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

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2623 is a monolithic, DC-DC, step-

down, switching charger for a 1-or-2-cell serial

power MOSFET that can output up to a 2A

charge current. It also has peak-current–mode

control for fast loop response and easy

compensation.

The MP2623 uses a sense resistor to control a

programmable charge current, and accurately

regulates the charge current and the charge

voltage using two control loops.

The

MP2623

has

multiple

fault-condition

protections that include cycle-by-cycle current

limiting and thermal shutdown. Other safety

features include battery temperature monitoring

and protection, charge status indication and a

programmable timer to halt charging after a set

time period.

The MP2623 requires a minimal number of

readily-available external components.

The MP2623 is available in a 4mm×4mm 16-pin

QFN package.

FEATURES

Packs

 Wide Operating-Input Range

 Programmable Charging Current of up to 2A

 0.2Ω Integrated Power MOSFET

 Up to 90% Efficiency

 Fixed 1.1MHz Frequency

 Preconditioning for Fully-Depleted Batteries

 Charging Status Indicator

 Input Supply Fault Indicator

 Thermal Shutdown

 Cycle-by-Cycle Over-Current Protection

 Battery Temperature Monitor and Protection

APPLICATIONS

 Power Tools and Portable Equipment

 Handheld Terminals

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

status, please visit MPS website under Quality Assurance. “MPS” and “The

Future of Analog IC Technology” are Registered Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION

L

RS1

VIN

VREF33

VCC

CELLS

CHGOK

ACOK

NTC

EN

COMPV

COMPI

GND

TMR

BATT

CSP

BST

SW

OFF

ON

C2

22

C3

1

C4

2.2nF

C5

2.2nF

C6

0.1

C7

0.1

R1

R2

R3

10k

10k

R4 2.5k

R5 750

4.7

100 m

D1

C1

4.7

1-2 Cell

D2

5.5V to 24V

MP2623

10