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Part Name
Description
ISL97673IRZ-TK View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
ISL97673IRZ-TK
6-Channel SMBus or PWM Dimming LED Driver with Phase Shift Control
Intersil
ISL97673IRZ-TK Datasheet PDF : 27 Pages
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ISL97673
Block Diagram
VIN = 4.5V~26V
VIN
FAULT
10uH/3A
45V*, 2
4
5
0
mA per string
78 (6x13) LEDs
LX
4.7uF/50V
VDC
FPWM
REG
Bias
OSC &
fsw
RAMP
Comp
Dimming
Controller
O/P Short
Faul t/S tatu s
Reg is ter
Σ
=0
Imax
IL IMIT
Boost SW
FET
Logic
Drivers
OVP
OVP
PGND
COMP
GM
AMP
Fault/Status Control
Highest VF
String Detect
pe
Open Ckt, Short Ckt
Detects
CH0
CH1
CH5
RSET
GND
+
REF
-
GEN
REF_OVP
REF_ VS C
SMBCLK(SCL)
SMBDAT(SDA)
SMBus/
I2C
Control
Phase Shift
Controller
VSET
DAC0
+
-
DAC0
PW M 0
Con tro ls
PWM0
DAC1
+
-
DAC 1
PWM1
Controls
PWM1
0
Temp
Sensor
Faul t/S tat us
Register
1
*
*
V
V
IN
in
>
> 6
1
V
2V
SEL1
SEL2
Dimming Mode
Selection
DAC5
+
5
-
D AC5
EN/PWM
Ext PWM
Control Ckt
ISL97673
PWM5
Co ntrol s
PWM5
FIGURE 2. ISL97673 BLOCK DIAGRAM
2
FN7633.0
June 24, 2010
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