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DS20006163B-page 7

MIC4832

3.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1:

PIN FUNCTION TABLE

Pin Number

Pin Name

Description

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 resis-

tor 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.