sc4525d Semtech Corporation, sc4525d Datasheet - Page 18

• Manufacturer Part Number: sc4525d
• Description: 18v, 3a, 350khz Step-down Switching Regulator
• Manufacturer: Semtech Corporation

Typical Performance Characteristics
(For A 12V to 5V/3A Step-down Converter with 350kHz Switching Frequency)
© 2011 Semtech Corp.
SS270 REV 6-7
Figure 12(c). Load Transient Response
Figure 12(a). Load Characteristic
6
5
4
3
2
1
0
5V Output Response (1V/DIV, AC Coupling)
0
0.5
Load Characteristic
1
Inductor Current (1A/DIV)
(I
Load Current (A)
O
1.5
= 0.3A to 3A)
40us/DIV
2
2.5
Fig.12b: SS
Fig.12d: OCP
3
3.5
4
Figure 12(d). Output Short Circuit (Hiccup)
Figure 12(b). V
12V Input (5V/DIV)
5V Output (2V/DIV)
SS Voltage (1V/DIV)
Retry Inductor Current (2A/DIV)
5V Output Short (5V/DIV)
IN
SS Voltage (2V/DIV)
Start up Transient (I
10ms/DIV
5ms/DIV
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SC4525D
O
=3A)
18