MP9447GL datasheet(3/19 Pages) MPS

3 / 19 page

MP9447–HIGH-EFFICIENCY, FAST-TRANSIENT, SYNCHRONOUS, STEP-DOWN CONVERTER

MP9447 Rev. 1.2

www.MonolithicPower.com

1/5/2016

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

ABSOLUTE MAXIMUM RATINGS (1)

Supply Voltage VIN ....................................... 40V

VSW........................................-0.3V to VIN + 0.3V

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

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

Continuous Power Dissipation

(TA = +25°C)

(2)

………………………………… …………….2.6W

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

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

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

Recommended Operating Conditions

(3)

Supply Voltage VIN ...........................4.5V to 36V

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

Operating Junction Temp. (TJ). -40°C to +125°C

Thermal Resistance

(4)

θJA

θJC

QFN-20 (3mm×4mm)..............48 ...... 10 ... °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.

MP9447GL Datasheet(PDF) 3 Page - Monolithic Power Systems