SC440MLTRT Semtech, SC440MLTRT Datasheet - Page 4

• Manufacturer Part Number: SC440MLTRT
• Description: IC LED DRVR WHITE BCKLGT 24-MLPQ
• Manufacturer: Semtech
• Type: Backlight, White LEDr

Specifications of SC440MLTRT

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Backlight
• Frequency: 640kHz ~ 960kHz
• Voltage - Supply: 4.5 V ~ 21 V
• Voltage - Output: 40V
• Mounting Type: Surface Mount
• Package / Case: 24-MLPQ
• Current - Output / Channel: 30mA
• Internal Switch(s): Yes
• Efficiency: 91%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Other names: SC440MLTR

Electrical Characteristics (continued)
Unless otherwise noted, V
© 2010 Semtech Corp.
Parameter
Control Signals
EN, PWM High Voltage
EN, PWM Low Voltage
EN, PWM Leakage Current
PWM Dimming Frequency
PWM Dimming Minimum Duty Cycle
PWM Dimming Minimum Pulse Width
FFLAG Voltage
SS Source Current
SS Sink Current
SS Switching Threshold
SS End Voltage
Over-Voltage Protection
OVPIN Threshold Voltage
OVPIN Leakage Current
OVPRTN Saturation Voltage
OVPRTN Leakage Current
VOUT Internal Pull-Down in
Over-Voltage Fault
VOUT Leakage Current
Current Source (IO1 ~ IO6)
Backlight Current Accuracy
LED Current Matching
Maximum LED Current
LED Short Circuit Protection
Threshold
I
SCP_EN Bias
Over-Temperature Protection
Thermal Shutdown
Temperature
Thermal Shutdown Hysteresis
Notes:
(1) Guaranteed by design.
O
Off Leakage Current
IN
(1)
= 12V, -40°C < T
NOT RECOMMENDED FOR NEW DESIGNS: SEE SC440A
(1)
(1)
A
= T
J
< 85°C, R
IO1~IO6
Symbol
T
D
V
I
I
I
V
OVPRTN_L
V
I
I
I
PWM_MIN
V
V
EN_LEAK
V
V
OVPIN_L
I
T
V
OVPIN_TH
MIN_PWM
VOUT_L
O_LEAK
SCP_EN
F
O_MAX
I
I
OVPRTN
T
SS_END
I
IO_SCP
OTP_H
FFLAG
SS_H
SS_TH
EN_H
SS_L
EN_L
PWM
OVP
OTP
IOSET
= 2kΩ.
PWM =10% to 100%; T
I
FFLAG
EN = 0V, V
EN, PWM = 1; T
V
PWM = 200Hz / 500Hz
Vss = 2V at OVP or OTP
EN
= 2 mA, normal operation
OVPIN = VIN = 20V
V
V
= V
OVPRTN = VIN
IN
IN
F
F
SCP_EN = 0V
I
Conditions
OVPRTN
PWM
V
PWM
= 4.5V to 21V
= 4.5V to 21V
PWM
T
OUT
T
Vss = 0V
J
J
= 25°C
= 25°C
IO1
= 200Hz
= 200Hz
= 40V
= 0V to 5.0V
=100μA
~ V
J
IO6
= 25°C
= 12V
J
= 25°C
Min
1.49
27
2.2
50
0.7
35
2
0.01
+/-1
Typ
0.25
1.55
2.35
-20
150
0.4
0.1
0.1
3.5
0.9
2.6
0.1
0.9
10
30
60
30
1
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Max
+/-3
1.05
1.61
2.55
50k
0.4
32
1
1
1
1
SC440
Units
mA
mV
mA
mA
µA
µA
µA
µA
µA
µA
µA
Hz
µs
%
%
°C
°C
V
V
V
V
V
V
V
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