MP28266 datasheet(2/14 Pages) MPS

2 / 14 page

MP28266 – 21V, 3A, 500kHz, SYNCHRONOUS, STEP-DOWN CONVERTER

MP28266 Rev. 1.0

www.MonolithicPower.com

3/16/2012

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

ORDERING INFORMATION

Part Number*

Package

Top Marking

Free Air Temperature (TA)

MP28266DL

QFN14 (3x4mm)

MP28266DL

-40°C to +85°C

* For Tape & Reel, add suffix –Z (eg. MP28266DL–Z);

For RoHS, compliant packaging, add suffix –LF (eg. MP28266DL–LF–Z).

PACKAGE REFERENCE

PIN 1 ID

Exposed

Pad

AGND

GND

VCC

AAM

BST

SYNC

TOP VIEW

QFN14 (3x4mm)

ABSOLUTE MAXIMUM RATINGS (1)

VIN ..................................................-0.3V to 24V

VSW..................................................-0.3V to 24V

VBST ...................................................... VSW + 6V

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

Junction Temperature...............................150°C

Lead Temperature ....................................260°C

Junction Temperature...............................150°C

Continuous Power Dissipation (TA = +25°C)

(2)

............................................................. 2.6W

Recommended Operating Conditions

(3)

Supply Voltage VIN ..............................6V to 21V

Output Voltage VOUT.........................0.6V to 18V

Maximum Junction Temp. (TJ) ............... +125°C

Thermal Resistance

(4)

θJA

θJC

QFN14 (3x4mm) .....................48 ...... 11 ... °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 PCB.

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