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SC441A Datasheet(PDF) 11 Page - Semtech Corporation

Part # SC441A
Description  High Efficiency Integrated Driver for 4-Strings of 150mA LEDs
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC441A Datasheet(HTML) 11 Page - Semtech Corporation

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SC441A

© 2009 Semtech Corporation
www.semtech.com
Block Diagram
Figure 1. SC441A Block Diagram
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
FAULT-1
TSD
HICCUP
OVP
UVLO
HICCUP
HICCUP
Fault
SS
3V3
Fault
CONTROL
LOGIC
VOUT
DISABLE1
EN
PWM
VIN
SW
AGND
COMP
OSC
ISENSE
Bandgap
IO1
OVPRTN
ILIM
PGND
SS
ONE IO CHANNEL SHOWN
IOSET
FFLAG
HICCUP
IOGND
UVLO & TSD
PGND
LED OPEN/SHORT/OVERSHOOT
CIRCUIT PROTECTION
CURRENT
SOURCE
OVPIN
SW
LED CURRENT
SETTING
OVP
Detect
DISABLE2
4.5uA
4.5uA
S
R
Q
0.9mA
0.9mA
1uA
1uA


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