SC4524BSETRT 데이터 시트보기 (PDF) - Semtech Corporation

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SC4524BSETRT

18V 2A Step-Down Switching Regulator

Semtech Corporation 

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

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