SC443ULTRT Semtech, SC443ULTRT Datasheet - Page 4

• Manufacturer Part Number: SC443ULTRT
• Description: TVS
• Manufacturer: Semtech

Specifications of SC443ULTRT

• Constant Current: *
• Constant Voltage: *
• Topology: *
• Number Of Outputs: *
• Internal Driver: *
• Type - Primary: *
• Type - Secondary: *
• Frequency: *
• Voltage - Supply: *
• Voltage - Output: *
• Mounting Type: Surface Mount
• Package / Case: 16-UFQFN Exposed Pad
• Operating Temperature: *
• Current - Output / Channel: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SC443ULTRTTR

Electrical Characteristics (continued)
Unless otherwise noted, V
Notes:
() Guaranteed by design.
© 2008 Semtech Corp.
Parameter
Compensation
Sourcing Current
Sinking Current
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
SS Source Current
SS Sink Current
SS Switching Threshold
SS End Voltage
Over-Voltage Protection
OVPIN Threshold Voltage
OVPIN Leakage Current
VOUT Internal Pull-Down in
Over-Voltage Fault
VOUT Leakage Current
Current Source (IO1 ~ IO3)
Backlight Current Accuracy
LED Current Matching
Overshoot Protection Threshold
Maximum LED Current
IO Off Leakage Current
Over-Temperature Protection
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
()
IN
()
= 2V, -40°C < T
A
= T
IO~IO3
IO~IO3
Symbol
T
D
V
I
I
V
I
I
PWM_MIN
EN_LEAK
T
V
V
V
OVPIN_L
I
MIN_PWM
OVPIN_TH
VOUT_L
O_LEAK
F
O_MAX
I
T
J
I
SS_END
I
I
OTP_H
I
SS_H
SS_L
SS_TH
EN_H
EN_L
PWM
OVP
O-H
O-L
< 85°C, R
OTP
IOSET
= 4.02kΩ, FSET = 40.2kΩ.
EN = 0V, VIO ~ VIO3 = VIN
VEN = VPWM = 0V to 5.0V
VCOMP = 0.5V, T
EN, PWM = ; T
EN, PWM = ; T
VCOMP = 2V, T
Vss = 2V at OVP or OTP
OVPIN = VIN = 20V
VIN = 4.5V to 2V
VIN = 4.5V to 2V
Conditions
VOUT = 40V
T
Vss = 0V
200Hz
200Hz
J
= 25°C
J
J
J
J
= 25 °C
= 25°C
= 25°C
= 25 °C
Min
.45
27.8
50
0.6
35
2
Typ
0.0
.5
29.9
+/-
0.95
50
0.4
.5
0.8
2.6
0.
0.8
0.
0.
20
0
7
5
5
www.semtech.com
Max
.57
+/-3
50k
0.4
32




SC443
Units
mA
mA
mA
µA
µA
µA
Hz
µA
µA
µA
µA
µs
°C
°C
%
%
V
V
V
V
V
V
4