sc4524c

Manufacturer Part Numbersc4524c
Description28v 2a Step-down Switching Regulator
ManufacturerSemtech Corporation
sc4524c datasheet
 


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Electrical Characteristics (Cont.)
Unless otherwise noted, V
= 12V, V
= 15V, V
IN
BST
Parameter
Minimum Switch On-time
Minimum Switch Off-time
Switch Leakage Current
Minimum Bootstrap Voltage
BST Pin Current
Oscillator
Switching Frequency
Foldback Frequency
Soft Start and Overload Protection
SS/EN Shutdown Threshold
SS/EN Switching Threshold
Soft-start Charging Current
Soft-start Discharging Current
Hiccup Arming SS/EN Voltage
Hiccup SS/EN Overload Threshold
Hiccup Retry SS/EN Voltage
Over Temperature Protection
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Note 1: Switch current limit does not vary with duty cycle.
= 2.2V, -40°C < T
< 125°C, R
= 12.1kΩ.
SS
J
OSC
Conditions
I
= -2.6A
SW
I
= -2.6A
SW
R
= 12.1kΩ
OSC
R
= 73.2kΩ
OSC
R
= 12.1kΩ, V
= 0
OSC
FB
R
= 73.2kΩ, V
= 0
OSC
FB
V
= 0 V
FB
V
= 0 V
SS/EN
V
= 1.5 V
SS/EN
V
Rising
SS/EN
V
Falling
SS/EN
V
Falling
SS/EN
Min
Typ
Max
Units
135
ns
100
ns
10
µA
1.8
2.3
V
60
95
mA
1.04
1.3
1.56
MHz
230
300
370
kHz
100
250
kHz
35
60
90
0.2
0.3
0.4
V
0.95
1.2
1.4
V
1.9
µA
1.6
2.4
3.2
1.5
µA
2.15
V
1.9
V
0.6
1.0
1.2
V
165
°C
10
°C
4