MP9184 – 17A, 600KHZ, 20V WIDE INPUT RANGE ,SYNCHRONOUS BOOST CONVERTER IN ASMALL 3X4MM QFN PACKAGE

MP9184 Rev. 1.0

www.MonolithicPower.com

10

8/27/2015

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PIN FUNCTIONS

Package

Pin #

Name Description

1

BST

Bootstrap. BST powers the SDR driver.

2

SDR

Synchronous Gate Driver for the Output Rectifier.

3

OUT

Sample Output Voltage. OUT provides the sample output voltage and the charge for the

4

EN

Chip Enable Control Input. Active high. Regulator on/off control input. When not used,

connect EN to the input source through a 100kΩ pull-up resistor for automatic start-up (if

5

MODE

Mode Select. Selects the internal or external current sensing mode. Connect to GND to

use internal current-sensing block. If floating, use an external current-sense resistor. DO

NOT pull MODE down to GND through a resistor.

6

SENSE

Voltage Sense. Voltage sensed between SENSE and IN. The voltage sensed between

SENSE and IN determines the external current-sense signal.

7,8,19,20,21

SW

Power Switch Output. SW is the drain of the internal Power MOSFET. Connect the

power inductor and output rectifier to SW.

9,10,17,18,22 PGND Power Ground.

11

IN

Input Supply. IN must be bypassed locally.

12

VDD

Internal Bias Supply. Decouple with a 2.2μF ceramic capacitor as close to FB as

possible.

13

COMP Compensation. Connect a capacitor and resistor in series to AGND for loop stability.

14

FB

FB.

15

SS

Soft-Start Control. Connect a soft-start capacitor to SS. The soft-start capacitor is

charged with a constant current. Leave SS disconnected if the soft-start is not used.

16

AGND Analog Ground.