MP4561 datasheet(2/17 Pages) MPS

2 / 17 page

MP4561 – 1.5A, 2MHz, 55V STEP-DOWN CONVERTER

MP4561 Rev. 1.0

www.MonolithicPower.com

11/5/2012

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

ORDERING INFORMATION

Part Number*

Package

Top Marking

MP4561DQ

QFN10( 3x3mm)

* For Tape & Reel, add suffix –Z (e.g. MP4561DQ–Z)

For RoHS compliant packaging, add suffix –LF (e.g. MP4561DQ–LF–Z)

PACKAGE REFERENCE

TOP VIEW

COMP

BST

VIN

FREQ

GND

EXPOSED PAD

Connect to GND Plane

ABSOLUTE MAXIMUM RATINGS (1)

Supply Voltage (VIN).....................–0.3V to +60V

Switch Voltage (VSW)............ –0.5V to VIN + 0.5V

BST to SW .....................................–0.3V to +5V

All Other Pins.................................–0.3V to +5V

Continuous Power Dissipation

(TA = +25°C)

(2)

............................................................. 2.5W

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

°C

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

°C

Storage Temperature.............. –65°C to +150

°C

Recommended Operating Conditions

(3)

Supply Voltage VIN ...........................3.8V to 55V

Output Voltage VOUT.........................0.8V to 52V

Operating Junct. Temp. (TJ).... –40°C to +125°C

Thermal Resistance

(4)

θJA

θJC

3x3mm QFN10........................50 ...... 12 ...

°C/W

Notes:

1) Exceeding these ratings may damage the device.

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

maximum junction temperature TJ(MAX), the junction-to-

ambient thermal resistance θJA, and the ambient temperature

TA. The maximum allowable continuous power dissipation at

any ambient temperature is calculated by PD(MAX)=(TJ(MAX)-

TA)/θJA. Exceeding the maximum allowable power 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 board.

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