MP5455GL datasheet(3/17 Pages) MPS

3 / 17 page

MP5455 – PEAK POWER ASSIST FOR LOW-POWER APPLICATIONS

MP5455 Rev. 1.01

www.MonolithicPower.com

2/2/2018

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

ABSOLUTE MAXIMUM RATINGS (1)

Supply voltage (VIN)................................... 8.0V

VSTRG ...............................................-0.3V to 35V

VSW....................................-0.3V to VSTRG + 0.3V

VBST ...................................-0.3V to VSTRG + 6.5V

VCST.................................................-0.3V to 40V

All other pins ..................................-0.3V to 6.5V

Continuous power dissipation (TA = +25°C)

(2)

................................................................... 2.6W

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

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

Operating temperature............... -40°C to +85°C

Recommended Operating Conditions (3)

Supply voltage (VIN)..........................2.7V to 7V

Bus voltage (VB).................................2.7V to 6V

Storage voltage (VSTRG)..................... VIN to 30V

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

Thermal Resistance (4)

θJA

θJC

QFN-20 (3mmx4mm).............. 48 ...... 10... °C/W

NOTES:

1) Exceeding these ratings may damage the device.

2) The maximum 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 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, which is 4-layer PCB.

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