MP2953B datasheet(4/30 Pages) MPS

4 / 30 page

MP2953B – DIGITAL PWM CONTROLLER WITH PMBUS FOR VR12.5

MP2953B Rev. 1.01

www.MonolithicPower.com

10/9/2015

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

ABSOLUTE MAXIMUM RATINGS (1)

VDD50.......................................–0.3V to +6.5 V

VDD18.......................................–0.3V to +2.0 V

CS1 to CS6, PWM1 to PWM6, FB, VDIFF,

VOSEN, VORTN, SCL_P, SDA_P, ALT_P#,

CCM, EN, VDD33......................–0.3V to +3.6 V

All Other Pins.............................–0.3V to +1.8 V

Continuous Power Dissipation (TA = +25°C) (2)

………………………………………..…… ..3.4 W

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

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

Storage Temperature.............. –65oC to +150oC

Recommended Operating Conditions

(3)

VDD50......................................................... +5V

Operating Junction Temp. (TJ). -10°C to +125°C

Thermal Resistance

(4)

θJA

θJC

QFN-40 (5mmx5mm).............. 36 ....... 5....

°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 produces an excessive die temperature, causing

the regulator to 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, 6-layer PCB.

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