Micrel

MIC4830

July 2009

2

M9999-070709-C

Ordering Information

Part Number

Junction Temp. Range

Package

Lead Finish

MIC4830YML

–40° to +85°C

8-Pin 3mm × 3mm MLF

®

RoHS-Compliant / Pb-Free / Halogen Free*

MIC4830YMM

–40° to +85°C

8-Pin MSOP

RoHS-Compliant / Pb-Free

Note

*MLF

Pin Configuration

8-Pin MSOP (MM)

Pin Description

Pin Number

Pin Name

Pin Function

1

VDD

Supply (Input): 1.8V to 5.5V for internal circuitry.

2

RSW

Switch Resistor (External Component): Set switch frequency of the internal

power MOSFET by connecting an external resistor to VDD. Connecting the

external resistor to GND disables the switch oscillator and shuts down the

device.

3

REL

EL Resistor (External Component): Set EL frequency of the internal H-bridge

driver by connecting an external resistor to VDD. Connecting the external

resistor to GND disables the EL oscillator.

4

GND

Ground.

5

SW

Switch Node (Input): Internal high-voltage power MOSFET drain.

6

CS

Regulated Boost Output (External Component): Connect to the output capacitor

of the boost regulator and connect to the cathode of the diode.

7

VB

EL Output: Connect to one end of the EL lamp. Polarity is not important.

8

VA

EL Output: Connect to one end of the EL lamp. Polarity is not important.