isl9209c Intersil Corporation, isl9209c Datasheet - Page 3

• Manufacturer Part Number: isl9209c
• Description: Charging System Safety Circuit
• Manufacturer: Intersil Corporation

Pin Descriptions
VIN (Pin 1, 2)
The input power source. The VIN can withstand 30V input.
GND (Pin 3)
System ground reference.
WRN (Pin 4)
WRN is an open-drain logic output that turns LOW when any
protection event occurs.
NC (Pin 5, 6, 12)
No connection and must be left floating.
EN (Pin 7)
Enable input. Pull this pin to low or leave it floating to enable
the IC and force it to high to disable the IC.
Typical Applications
Block Diagram
INPUT
R
C
ILIM
1
INPUT
VIN
ILIM
GND
ISL9209C
VIN
3
R
R
WRN
OUT
1
2
VB
EN
WRN
1.2V
PRE-REG
Pre-reg
POR
POR
REF
Ref
Q
CP1
CHARGER
BATTERY
ISL6292
4
R
VB
BATTERY
GND
PACK
DRIVER
Driver
FET
FET
FIGURE 1. BLOCK DIAGRAM
LOGIC
Logic
Q
ISL9209C
Q
5
Q
2
1
CP2
R
CP3
5
VB (Pin 8)
Battery voltage monitoring input. This pin is connected to the
battery pack positive terminal via an isolation resistor.
ILIM (Pin 9)
Overcurrent protection threshold setting pin. Connect a
resistor between this pin and GND to set the OCP threshold.
OUT (Pin 10, 11)
Output pin.
EPAD
The exposed pad at the bottom of the TDFN package for
enhancing thermal performance. Must be electrically
connected to the GND pin.
EN
EA
Q
3
PART
R
R
R
0.8V
4
C
ILIM
VB
R
1
3
BUF
OUT
ILIM
VB
25kΩ
200kΩ to 1MΩ
1µF/16V X5R ceramic capacitor
CHARGER
BATTERY
R
R
ISL6292
ISL6292
Charger
Battery
VB
ILIM
DESCRIPTION
May 21, 2007
FN6489.0