SC4524B
SS
Typical Performance Characteristics
(For A 12V to 5V/2A Step-down Converter with 1MHz Switching Frequency)
SS270 REV 6-7
Load Characteristic
6
5
4
3
2
1
0
0 0.5 1 1.5 2 2.5 3
Load Current (A)
OCP Figure 12(a). Load Characteristic
12V Input (5V/DIV)
5V Output (2V/DIV)
SS Voltage (1V/DIV)
10ms/DIV
Figure 12(b). VIN Start up Transient (IO=2A)
5V Output Response (500mV/DIV, AC Coupling)
Inductor Current (1A/DIV)
40us/DIV
Figure 12(c). Load Transient Response
(IO= 0.3A to 2A)
5V Output Short (5V/DIV)
Retry Inductor Current (2A/DIV)
SS Voltage (2V/DIV)
20ms/DIV
Figure 12(d). Output Short Circuit (Hiccup)
17