MPQ4432 datasheet(4/31 Pages) MPS

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MPQ4432 - 36V, 2.2A, LOW IQ, SYNCHRONOUS STEP-DOWN CONVERTER

MPQ4432 Rev. 1.0

www.MonolithicPower.com

9/19/2016

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

PACKAGE REFERENCE

TOP VIEW

PHASE

VIN

PGND

AGND

FREQ

SYNC

BIAS

PGND

BST

VCC

QFN-16 (3mmx4mm)

ABSOLUTE MAXIMUM RATINGS (1)

Supply voltage (VIN)...................... -0.3V to 40V

Switch voltage (VSW) ........... -0.3V to VIN + 0.3V

BST voltage (VBST) ............................VSW + 6.5V

EN voltage (VEN) ............................ -0.3V to 40V

BIAS voltage (VBIAS) ....................... -0.3V to 20V

All other pins.................................... -0.3V to 6V

Continuous power dissipation (TA = +25°C)

(2)

QFN-16 (3mmx4mm) .................................2.6W

Operating junction temperature................ 150°C

Lead temperature .................................... 260°C

Storage temperature.................. -65°C to 150°C

Recommended Operating Conditions

Supply voltage (VIN)....................... 3.3V to 36V

Operating junction temp. (TJ) ... -40°C to +125°C

Thermal Resistance

(3)

θJA

θJC

QFN-16 (3mmx4mm) ............ 48....... 11 ... °C/W

NOTES:

1) Absolute maximum ratings are rated under room temperature

unless otherwise noted. 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 θ

JA, 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

produces an excessive die temperature, causing the regulator

to go into thermal shutdown. Internal thermal shutdown

circuitry protects the device from permanent damage.

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

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