MP3217

36V, 670kHz Step-up Converter

with a 0.5A Switch

MP3217 Rev. 0.91

www.MonolithicPower.com

1

10/15/2009

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2009 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP3217 is a monolithic step up converter

integrating a 0.5A, 0.6Ω internal switch. The

MP3217 uses current mode, fixed frequency

architecture to regulate the output voltage,

providing fast transient response and cycle by

cycle current limit.

The MP3217 includes under-voltage lockout, over

voltage

protection

and

thermal

overload

protection preventing damage in the event of an

output overload.

The MP3217 is available in small 6-pin TSOT23

package.

FEATURES

• Internal 0.6Ω Power MOSFET

• Up to 36V Output Voltage

• 670kHz Fixed Switching Frequency

• 42V Over Voltage Shutdown

• Cycle-by-Cycle Over Current Protection

• UVLO, Thermal Shutdown

• Available in TSOT23-6 Packages

APPLICATIONS

• APD Bias Generation

• Portable Applications

• Handheld Computers and PDAs

• Digital Still Cameras

“Monolithic Power Systems”, “MPS”, and “The Future of Analog IC Technology”

are Registered Trademarks of Monolithic Power Systems, Inc.

TYPICAL APPLICATION

MP3217

D1

B0540

ENABLE

IN

SW

EN

GND

FB

PGND

40

50

60

70

80

90

0 2 4 6 8 101214161820

OUTPUT CURRENT (mA)

Efficiency vs.

Output Current