MPQ2451-5/33―36V, 2.2MHz, 0.6A, STEP-DOWN CONVERTER, AEC-Q100 QUALIFIED

MPQ2451-5/33 Rev 1.0

www.MonolithicPower.com

4

5/25/2016

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PIN FUNCTIONS

SOT23-6L

Pin #

QFN-6L

Pin #

Name

Description

1

6

BST

Bootstrap. Positive power supply for the internal, floating, high-side

MOSFET driver. Connect a bypass capacitor between this pin and SW

pin.

2

5

GND

Ground. Connect the output capacitor as close to this pin as possible.

Avoid routing near high-current switch paths.

3

4

OUT

Output-Voltage Sense. Connected to the tap of an internal resistor divider

to set the output voltage.

4

3

EN

Enable. Pull this pin below the specified threshold to shut the chip down.

Pull it above the specified threshold to enable the chip. Float this pin to

disable the chip.

5

2

VIN

Input Supply. Supplies power to all internal control circuitry. Requires a

decoupling capacitor to ground to reduce switching spikes.

6

1

SW

diode connected to ground to reduce switching spikes.