ISL97632 データシートの表示（PDF） - Intersil
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ISL97632 Datasheet PDF : 9 Pages
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Block Diagram
VIN (2.4V to 5.5V)
CIN
VIN
1.4MHZ OSCILLATOR AND RAMP
GENERATOR
ISL97632
L
EN
ISL97632
PWM
COMPARATOR
PWM LOGIC
CONTROLLER
FET
DRIVER
LX
VOUT
CURRENT
SENSE
GM AMP
COMPENSATION
SDIN
GM
AMPLIFIER
10 - 186mV
SERIAL
INTERFACE
GND
FBSW
EN
FB
BANDGAP
REFERENCE
GENERATOR
COUT
2 to 6 LEDs
RSET
Pin Descriptions
PIN
NUMBER
1
2
PIN
NAME
GND
VIN
3
EN
4
SDIN
5
FB
6
FBSW
7
VOUT
8
LX
DESCRIPTION
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.
3
FN9239.3
February 22, 2008
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