SC4525D View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC4525D

18V, 3A, 350kHz Step-Down Switching Regulator

Semtech Corporation 

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Fig.12b: SS

SC4525D

Typical Performance Characteristics

(SFSo27r0AR1EV26V-7to 5V/3A Step-down Converter with 350kHz Switching Frequency)

Load Characteristic

6

5

4

3

2

1

0

0 0.5 1 1.5 2 2.5 3 3.5 4

Load Current (A)

Fig.12d: OCP

Figure 12(a). Load Characteristic

12V Input (5V/DIV)

5V Output (2V/DIV)

SS Voltage (1V/DIV)

5ms/DIV

Figure 12(b). VIN Start up Transient (IO=3A)

5V Output Response (1V/DIV, AC Coupling)

Inductor Current (1A/DIV)

40us/DIV

Figure 12(c). Load Transient Response

(IO= 0.3A to 3A)

5V Output Short (5V/DIV)

Retry Inductor Current (2A/DIV)

SS Voltage (2V/DIV)

10ms/DIV

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

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