MP5512 – 18V, 4.5A ENERGY STORAGE AND MANAGEMENT UNIT

MP5512 Rev. 1.1

www.MonolithicPower.com

11

4/27/2016

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QFN28

(4mm×5mm)

Pin #

Name

Description

17

FBB

Bus-Voltage Feedback Sense. FBB Regulates the bus voltage in buck mode.

18

FBS

Storage-Voltage Feedback Sense. FBS sets the storage voltage in boost mode.

19

RTEST

STRG residual energy discharge resistor connection pin in evaluation test. When

Vin/VB or EN powers off, RTEST is pulled to PGND internally. One external resistor

from RTEST to STRG discharges STRG voltage for a residual energy discharge.

The discharge current must be lower than 500mA. This discharge resistor can avoid

any spark if we touch STRG after IC disabled in evaluation test.

20

BST

Bootstrap. Requires the bootstrap capacitor from BST to SW to supply the high-side

switch driver.

21,22,23,24

STRG

Storage. Connect the storage capacitor for energy storage and release circuitry.

25

SW

Switch output. For energy storage and release circuitry, connect a small inductor

between SW and VBO.

26

PGND

Power Ground.