ISL97632 查看數據表（PDF） - Renesas Electronics
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ISL97632 Datasheet PDF : 10 Pages
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ISL97632
Block Diagram
VIN (2.4V TO 5.5V)
CIN
VIN
1.4MHZ OSCILLATOR AND RAMP
GENERATOR
L
EN
ISL97632
PWM
COMPARATOR
PWM LOGIC
CONTROLLER
FET
DRIVER
LX
VOUT
CURRENT
SENSE
GM AMP
COMPENSATION
SDIN
GM
AMPLIFIER
10mV to 186mV
SERIAL
INTERFACE
GND
FBSW
EN
FB
BANDGAP
REFERENCE
GENERATOR
COUT
2 to 7 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 (1-Wire 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.
FN9239 Rev 4.00
March 22, 2010
Page 3 of 10
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