SC443ULTRT Semtech, SC443ULTRT Datasheet - Page 3

• 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

© 2008 Semtech Corp.
Absolute Maximum Ratings
Electrical Characteristics
Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters specified
NOTES-:
()
(2)
Unless otherwise noted, V
in the Electrical Characteristics section is not recommended.
V
Maximum Output Power ………………………………… 4W
FSET, IOSET Voltage ………………………………… -0.3 to 2V
SW, VOUT, IO~IO3, OVPIN Voltage ……………… 0.3V to 45V
SS, COMP Voltage …………………………………… -0.3 to 3V
EN, PWM Voltage …………………………… -0.3 to V
PGND to AGND and IOGND…………………………
Peak IR Reflow Temperature ………………………….
ESD Protection Level
Parameter
Input Supply
Under-Voltage Lockout Threshold
UVLO Hysteresis
V
V
Oscillator
Switching Frequency
Switching Frequency Range
Maximum Duty Cycle
Minimum Duty Cycle
Minimum On-Time
Internal Power Switch
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
IN
IN
IN
Quiescent Supply Current
Supply Current in Shutdown
Pin: Supply Voltage …………………………… -0.3 to 25V
Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD5 standards.
Tested according to JEDEC standard JESD22-A4-B.
()
()
()
(2)
IN
…………………………………
= 2V, -40°C < T
()
A
= T
Symbol
J
U
T
U
I
< 85°C, R
D
D
ON-MIN
V
S-LEAK
I
VLO-TH
I
I
VLO-H
IN-Q
IN-S
F
F
MAX
SW
MIN
SAT
S
S
IOSET
= 4.02kΩ, FSET =40.2 kΩ
IN
± 0.3V
260°C
+0.3V
2kV
EN / PWM = low
FSET = 40.2 kΩ
Conditions
No switching
I
SW
V
V
Recommended Operating Conditions
Thermal Information
SW
IN
= 500mA
Supply Input Voltage ……………………………… 4.5 to 2V
Maximum Output Voltage…………………………………42V
Maximum LED Current ………………………………… 30mA
Junction to Ambient
Maximum Junction Temperature……………………… 50°C
Storage Temperature ………………………… -65 to +50°C
Lead Temperature (Soldering) 0 sec ………………… 260°C
rising
= 2V
()
……………………………… 38°C/W
Min
0.64
200
90

Typ
0.0
250
200
200
4.2
0.8
3
www.semtech.com
Max
200
4.45
0.96
400

0

SC443
Units
MHz
kHz
mA
mV
mV
µA
µA
ns
%
%
A
V
3