MP8861 datasheet(3/37 Pages) MPS

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MP8861 – 2.85V - 18V, 6A, SYNCHRONOUS, STEP-DOWN CONVERTER

MP8861 Rev. 1.1

www.MonolithicPower.com

5/28/2020

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

PACKAGE REFERENCE

TOP VIEW

QFN-14 (3mmx4mm)

ABSOLUTE MAXIMUM RATINGS (1)

VIN .................................................. -0.3V to 19V

VSW ................................ -0.6V (-7V for <10ns) to

VIN + 0.7V (25V for <25ns)

VBST........................................................VSW + 4V

VEN................................................................. 18V

VOUT .............................................................. 7V

All other pins ..................................... -0.3V to 4V

Continuous power dissipation (TA = +25°C) (2)

QFN-14 (3mmx4mm)................................. 2.5W

Junction temperature ................................ 150°C

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

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

Recommended Operating Conditions (3)

Supply voltage (VIN)..................... 2.85V to 18V

Output voltage (VOUT) ................... 0.6V to 5.5V

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

Thermal Resistance (4)

θJA

θJC

QFN-14 (3mmx4mm)............. 48 ...... 11 ...°C/W

NOTES:

Exceeding these ratings may damage the device.

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.

The device is not guaranteed to function outside of its

operating conditions.

Measured on JESD51-7, 4-layer PCB.

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