MP28259 – 2A, 4.2V-20V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER

MP28259 Rev. 1.34

www.MonolithicPower.com

2

4/27/2012

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

© 2012 MPS. All Rights Reserved.

ORDERING INFORMATION

Part Number*

OCP Protection

Package

Top Marking

MP28259DD

Latch-off mode

QFN12 (2x3mm)

AAT

MP28259DD-A

Hiccup mode

QFN12 (2x3mm)

ACX

* For Tape & Reel, add suffix –Z (e.g. MP28259DD–Z).

For RoHS Compliant Packaging, add suffix –LF (e.g. MP28259DD–LF–Z)

PACKAGE REFERENCE

GND

SW

BST

VCC

EN

GND

SW

IN

FREQ

FB

TOP VIEW

PG

GND

1

2

12

3

4

8

7

6

5

11

10

9

SW

QFN12 (2x3mm)

All Other Pins................................. -0.3V to +6V

Continuous Power Dissipation

(2)

QFN12 (2x3mm) ........................................1.8W

Junction Temperature ............................. 150

°C

Lead Temperature ................................... 260

°C

Storage Temperature............... -65

°C to +150°C

Recommended Operating Conditions

(3)

Thermal Resistance

(4)

QFN12 (2x3mm) .................... 70 ...... 15...

°C/W

Notes:

1) Exceeding these ratings may damage the device.

2) The maximum allowable power dissipation is a function of the

dissipation will cause excessive die temperature, and the

regulator will go into thermal shutdown. Internal thermal

shutdown circuitry protects the device from permanent

damage.

3) The device is not guaranteed to function outside of its

operating conditions.

4) Measured on JESD51-7, 4-layer PCB.