ISL97632 Intersil Corporation, ISL97632 Datasheet - Page 3

• Manufacturer Part Number: ISL97632
• Description: White LED Driver
• Manufacturer: Intersil Corporation

Block Diagram
Pin Descriptions
VIN (2.4V to 5.5V)
NUMBER
PIN
CIN
1
2
3
4
5
6
7
8
SDIN
1.4MHZ OSCILLATOR AND RAMP
GM AMP
COMPENSATION
COMPARATOR
PWM
NAME
FBSW
VOUT
SDIN
GENERATOR
GND
PIN
VIN
EN
FB
LX
3
VIN
AMPLIFIER
Ground Pin. Connect to local ground.
Input Supply Pin. Connect to the input supply voltage, the inductor and the input supply decoupling
capacitor.
Enable Pin. Connect to enable signal to turn-on or off the device. Active High.
Single-Wire XSD Digital Interface.
Feedback Pin. Connect to the cathode of bottom LED and the sense resistor.
Optional FB Disconnect Switch.
Output Pin. Connect to the anode of the top LED and the output filter capacitor.
Switching Pin. Connect to inductor.
GM
CONTROLLER
PWM LOGIC
INTERFACE
SERIAL
EN
ISL97632
10 - 186mV
CURRENT
SENSE
ISL97632
DRIVER
FET
L
DESCRIPTION
BANDGAP
REFERENCE
GENERATOR
LX
EN
FBSW
GND
V
FB
OUT
RSET
2 to 6 LEDs
April 10, 2007
C
OUT
FN9239.2