MP2495

Integrated 100V Load Dump Protection, 2A Step

Down Regulator with Output Current Control

MP2495 Rev. 1.0

www.MonolithicPower.com

1

7/24/2012

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

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2495 is a monolithic step-down switch

mode converter with a programmable output

current limit and an integrated input over-

voltage protection switch It achieves 2.0A

continuous output current over a wide input

supply range with excellent load and line

regulation.

The

maximum

output

current

can

be

programmed by sensing current through the

inductor DC resistance (DCR) or an accurate

sense resistor.

Fault condition protection includes cycle-by-cycle

current limiting and thermal shutdown.

The MP2495 can survive high-voltage transients

such as those found in automotive and industrial

applications.

The MP2495 requires a minimum number of

readily available standard external components.

The MP2495 is available in a 16-pin SOIC package.

FEATURES

• Replaces External Transorb

• Input Surge Protection Up to 100V

• Programmable up to 2.0A Output Current

• Output Adjustable from 0.8V to 15V

• Programmable Output Current Limit without

power loss

• 0.25Ω Internal Power MOSFET Switch

• Stable with Low ESR Output Ceramic

Capacitors

• 95% Efficiency @ 500mA (Vo=5V)

• Fixed 700kHz Frequency

• Thermal Shutdown

• Cycle-by-Cycle Over Current Protection

• Available in a 16-Pin SOIC Package

APPLICATIONS

•

USB Power Supplies

•

Automotive Cigarette Lighter Adapters

•

Power Supply for Linear Chargers

“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

C9

10nF

C6

10nF

EN

VIN

VOUT

GND

5V

R5

D1

L1

IN

IN

VDD

OUT

OUT

BST

ISN

SW

ISP

GND

FB

EN

CTR

SS

MP2495

D2

2

16

5

8

14

9

10

7

12

4

13

3

15

1

GND

Typical 12V

Surge Voltage to 80V

50

60

70

80

90

100

LOAD CURRENT (mA)

Efficiency vs.

Load Current

10

100

1000

10000