MP2910 – 5V/12V SYNCHRONOUS BUCK PWM DC-DC AND LINEAR POWER CONTROLLER

MP2910 Rev. 1.0

www.MonolithicPower.com

5

12/14/2011

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PIN FUNCTIONS

SOIC14

Pin #

SOIC8E

Pin #

Name Description

1

1

BST

Bootstrap supply pin for the upper gate driver. Connect the bootstrap capacitor

between BST pin and the SW

pin

2

2

HG

Upper gate driver output. Connect to gate of the high side

power N-MOSFET.

3

3

GND

Both signal and power ground for the IC

4

4

LG

Lower gate drive output. Connect to gate of the low-side

power N-MOSFET

5

DRV This pin provides the drive for the linear

regulator's pass transistor/MOSFET.

6, 7, 8

NC

No internal connection

9

FBL

Linear regulator feedback voltage.

10

PG

PG is an open-drain output used to indicate that the

regulator is within normal

operating voltage ranges

11

5

Connect this pin to a well-decoupled 5V or 12V bias supply. It is also the positive

supply for the lower gate

driver, LG.

12

6

FB

Switcher feedback voltage. This pin is the inverting input

of the error amplifier.

13

7

OPS

This pin provides multi-function of the over-current setting,

HG turn-on POR

sensing, and shut-down features.

14

8

SW

Connect this pin to the source of the upper MOSFET and

the drain of the lower

MOSFET.