ISL6121 Intersil Corporation, ISL6121 Datasheet - Page 2

• Manufacturer Part Number: ISL6121
• Description: Single Supply Integrated Current Limiting Controller
• Manufacturer: Intersil Corporation

Simplified Block Diagram
Pin Descriptions
6, 7, 8
PIN #
2, 3
1
4
5
ENABLE /
SYMBOL
ENABLE
FAULT
VOUT
GND
VIN
IC GND Reference
Chip Bias, Controlled
Supply Input, Undervoltage
Lock-Out
Over Current Fault Indicator Overcurrent fault indicator. FAULT is disabled for 12ms after turn-on. This output is pulled
Controlled Supply Output
Enable / Enable Not Input
2
FUNCTION
GND
VIN
VIN
EN
POR
VIN provides chip bias voltage. At VIN < 2.5V chip functionality is disabled, FAULT latch
is cleared and floating. OUT is pulled and held low.
Enables chip when VIN and ENABLE > 2.5V or ENABLE < 0.6V
low to GND after the current limit time-out period has expired and stays latched until
ENABLE is deasserted.
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.
MONITORING, GATE AND
CURRENT AND TEMP.
OUTPUT CONTROL
ISL6121
LOGIC
Q-PUMP
LOGIC
DESCRIPTION
FAULT
OUT
OUT
OUT