STEP UP, 4 STRINGS, MAX. 350MA/STRING ANALOG AND PWM DIMMING, WHITE LED CONTROLLER

MP3398A Rev. 1.04

www.MonolithicPower.com

10

5/26/2017

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TSSOP16-EP

&SOIC16

Pin #

SOIC20

Pin #

Name

Description

13

17

ISENSE

Current Sense Input. During normal operation, this pin senses the

for peak-current

–mode control and also to limit the inductor current

during every switching cycle. If this pin is not used for cascading

applications, tie this pin to GND; do not let this pin float.

14

18

GATE

Step-up Converter Power Switch Gate Output. This pin drives the external

power N-MOS device.

15

19

VIN

Supply Input. VIN supplies the power to the chip, as well as the step-up

converter switch. Drive VIN with a 5V to 28V power source. Must be locally

bypassed.

16

20

VCC

The Internal 6V Linear Regulator Output. VCC provides power supply for the

external MOSFET switch gate driver and the internal control circuitry. Bypass

VCC to GND with a ceramic capacitor.

4, 6,

15, 16

NC

No Connect.