ISL6118

FN9008 Rev 2.00

Page 2 of 10

March 2004

Simplified Block Diagram

GND

VIN

EN_1

EN_2

FAULT_2

OUT_2

OUT_1

FAULT_1

Q-PUMP

CURRENT AND TEMP.

POR

CHANNEL 1 LIKE CHANNEL 2

MONITORING, GATE AND

OUTPUT CONTROL

LOGIC

Pin Descriptions

PIN NO.

DESIGNATOR

FUNCTION

DESCRIPTION

1

GND

IC Reference

2

VIN

Chip Bias, Controlled

Supply Input,

Undervoltage Lock-Out

VIN provides chip bias voltage. At VIN < 2.5V chip functionality is disabled, FAULT_X latch

is cleared and floating and OUT is held low.

3, 4

ENABLE_1, 2/

ENABLE_1, 2

Channel Enable/

Enable not Inputs

Enables/Disables switch.

5, 8

FAULT OUT_2, 1 Channel 2, 1

Overcurrent Fault not

Indicator

Channel overcurrent fault-not indicator. FAULT floats and is disabled until VIN > 2.5V. This

output is pulled low after the OC timeout period has expired and stays latched until ENABLE

is deasserted.

6, 7

OUT_2, 1

Channel 2,1 Controlled

Supply Output

Channel voltage output, connect to load to protect. Upon an OC condition OUT is current

limited to 0.6A. Current limit response time is within 200µs. This output will remain in current

limit for a determined time before being latched off.