SC4525A

8

Typical Performance Characteristics

(For A 12V to 5V/3A Step-down Converter with 1MHz Switching Frequency)

LC

Load Characteristic

0

1

2

3

4

5

6

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5

Load Current (A)

SS270 REV 6-7

Figure 12(a). Load Characteristic

SS

12V Input (5V/DIV)

5V Output (2V/DIV)

10ms/DIV

SS Voltage (1V/DIV)

Figure 12(b). V

Figure 12(c). Load Transient Response

(I

Figure 12(d). Output Short Circuit (Hiccup)

TR

5V Output Response (500mV/DIV, AC Coupling)

Inductor Current (1A/DIV)

40us/DIV

OCP

5V Output Short (5V/DIV)

Retry Inductor Current (2A/DIV)

20ms/DIV

SS Voltage (2V/DIV)