sc441c Semtech Corporation, sc441c Datasheet - Page 9

• Manufacturer Part Number: sc441c
• Description: High Efficiency Integrated Driver For 4-strings Of 150ma Leds
• Manufacturer: Semtech Corporation

© 2010 Semtech Corporation
Typical Characteristics (continued)
VIN
(5V/DIV)
VOUT
(20V/DIV)
IO1
(10V/DIV)
IO2
(1V/DIV)
VSS
(2V/DIV)
VSW
(20V/DIV)
VOUT
(20V/DIV)
VIN = 12V
Conditions: VIN = 12V, IO2 LED String is open circuit,
Output = 36V / 150mA x 3 LED strings
Output = 36V / 150mA x 4 LED strings
LED Open Circuit Protection
OTP and OTP Recovery
Conditions: VIN = 12V,
Time (10mS/DIV)
Time (40mS/DIV)
VIN = 12V
PWM
(2V/DIV)
SW
(20V/DIV)
IO1
(5V/DIV)
VIN
(10V/DIV)
VOUT
(20V/DIV)
IO2
(1V/DIV)
IO1
(5V/DIV)
Conditions: VIN = 12V, IO1 has one LED short circuit,
Output = 36V / 50mA x 4 LED strings
Output = 36V / 150mA x 4 LED strings
LED Short Circuit Protection
Conditions: VIN = 12V,
Time (10mS/DIV)
Time (10mS/DIV)
PWM Dimming
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SC441C
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