MP3398D – 4-STRING, 350MA/STRING, STEP-UP, WHITE LED CONTROLLER

MP3398D Rev. 1.0

www.MonolithicPower.com

10

5/23/2016

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2016 MPS. All Rights Reserved.

SOIC16

Pin #

SOIC20

Pin #

Name

Description

13

17

ISENSE

Current sense input. During normal operation, ISENSE senses the voltage

mode control and to limit the inductor current during every switching cycle. If

ISENSE is not used for cascading applications, tie it to GND. Do not leave

ISENSE floating.

14

18

GATE

Step-up converter power switch gate output. GATE drives the external

power N-channel MOSFET device.

15

19

VIN

Supply input. VIN supplies power to the chip and the step-up converter switch.

Drive VIN with a 5V-to-28V power source. Must be bypassed locally.

16

20

VCC

Internal 6V linear regulator output. VCC provides a 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 connection.