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SC441DEVB 数据表(PDF) 4 Page - Semtech Corporation

部件名 SC441DEVB
功能描述  High Efficiency Integrated Driver for 4-Strings of 150mA LEDs
PDF  21 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC441DEVB 数据表(HTML) 4 Page - Semtech Corporation

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SC441D
4
Electrical Characteristics (continued)
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Compensation
Sourcing Current
I
EA_SOURCE
V
COMP = 0.5V
5
µA
Sinking Current
I
EA_SINK
V
COMP = 2V
6
µA
Control Signals
EN, PWM, SCP_EN High Voltage
V
EN_H, VPWM_H
2
V
EN, PWM, SCP_EN Low Voltage
V
EN_L, VPWM_L
0.4
V
EN, PWM Leakage Current
I
EN, IPWM
V
EN, VPWM = 5V
0.

µA
PWM Dimming Frequency()
F
Dimming
50
50k
Hz
PWM Dimming Minimum Duty Cycle
D
MIN_Dimming
F
Dimming = 200Hz
0.2
%
PWM Dimming Minimum Pulse-Width (2)
T
MIN_Dimming
5
µs
PWM Dimming Minimum Off Time
T
MIN_Off
200
300
ns
FFLAG Voltage
V
FFLAG
I
FFLAG = 2 mA
0.25
V
SS Source Current
I
SS_SOURCE
V
SS = 0V
4.5
µA
SS Sink Current
I
SS_SINK
V
SS = 2V at OVP or OTP

SS Switching Threshold
V
SS_Switching
V
IN = 2V, TJ = 25 °C
0.5
0.7
.2
V
SS End Value
V
SS_END
V
IN = 2V
2.5
V
Over-Voltage Protection
OVPIN Threshold
V
OVPIN_TH
OVPIN - AGND
.46
.52
.58
V
OVPIN Leakage Current
I
OVPIN
V
OVPIN = 20V
0.

µA
VOUT Internal Pull-down Current Source
I
OVP
V
OUT = VIN + 3V
0.9
mA
VOUT Leakage Current
I
VOUT_LEAK
V
OUT = 40V
0.
µA
Current Source (IO1 ~ IO4)
Current Accuracy
I
O~IO4
T
J = 25 °C
40
50
60
mA
Current Matching
T
J = 25 °C
+/- 2
+/-3
%
Maximum LED Current
I
OMAX
200
mA
LED Short-Circuit Protection Threshold
V
IO_SCP
T
J = 25 °C

V
Leakage Current
I
IO_LEAK
EN = 0, V
IO ~ VIO4 = VIN
0.

µA



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