ISL6121 Ver la hoja de datos (PDF) - Renesas Electronics

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ISL6121

Single Supply Integrated Current Limiting Controller

Renesas Electronics 

ISL6121

Simplified Block Diagram

GND

OUT

VIN

POR

Q-PUMP

VIN

CURRENT AND TEMP.

MONITORING, GATE AND

OUTPUT CONTROL

LOGIC

OUT

OUT

EN

LOGIC

FAULT

Pin Descriptions

PIN # SYMBOL

FUNCTION

DESCRIPTION

1

GND

IC GND Reference

2, 3

VIN

Chip Bias, Controlled

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

Supply Input, Undervoltage is cleared and floating. OUT is pulled and held low.

Lock-Out

4

ENABLE / Enable / Enable Not Input Enables chip when VIN and ENABLE > 2.5V or ENABLE < 0.6V

ENABLE

5

FAULT Over Current Fault Indicator Overcurrent fault indicator. FAULT is disabled for 12ms after turn-on. This output is pulled

low to GND after the current limit time-out period has expired and stays latched until

ENABLE is deasserted.

6, 7, 8

VOUT

Controlled Supply Output

Voltage output, connect to load to protect. Upon an overcurrent condition VOUT is current

limited to 2A. Current limit response time is within 200S. This output will remain in current

limit for approximately 12ms before being latched off.

FN9004 Rev 2.00

November 12, 2004

Page 2 of 11

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