MP2227DQ datasheet(2/13 Pages) MPS

2 / 13 page

MP2227 – 24V, 3A, 1.3MHz SYNCHRONOUS STEP-DOWN CONVERTER

MP2227 Rev. 1.1

www.MonolithicPower.com

11/21/2011

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

ORDERING INFORMATION

Part Number*

Package

Top Marking

Free Air Temperature (TA)

MP2227DQ

QFN10(3mm x 3mm)

-40

C to +85C

* For Tape & Reel, add suffix –Z (e.g. MP2227DQ–Z).

For RoHS Compliant packaging, add suffix –LF (e.g. MP2227DQ–LF–Z)

PACKAGE REFERENCE

TOP VIEW

POK

VIN

GND

EN/SYNC

VCC

BST

EXPOSED PAD

ON BACKSIDE

ABSOLUTE MAXIMUM RATINGS (1)

VIN to GND...................................-0.3V to +28V

SW to GND ...........................-0.3V to VIN + 0.3V

.............................-2.5V to VIN + 2.5V for < 50ns

FB, EN/SYNC, VCC to GND...........-0.3V to +6.5V

POK, SYNC_OUT to GND .............-0.3V to +6.5V

BS to SW .....................................-0.3V to +6.5V

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 ..............................3V to 24V

Output Voltage VOUT..................0.8V to 0.9 x VIN

Max Operating Junct. Temp (TJ).............+125°C

Thermal Resistance

(4)

θJA

θJC

QFN10 (3mm x 3mm) .............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 PCB.

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