SC4502H Semtech Corporation, SC4502H Datasheet - Page 18

• Manufacturer Part Number: SC4502H
• Description: 1.4 Amp, 2 Mhz Step-up Switching Regulator With Soft-start | Semtech
• Manufacturer: Semtech Corporation

Figure 13(a). All Ceramic Capacitor High Voltage Application
14V
POWER MANAGEMENT
Typical Application Circuits
2.2µF
C1
VIN
2005 Semtech Corp.
f
(
M
1
1
0 .
4 .
H
OFF
47nF
C3
z
)
ON
10
3
R
SHDN
SS
IN
1
4
GND
(
1
8
5
K
SC4502H
4,5
0
8 .
L1
)
ROSC
9
COMP
6,7
SW
R4
FB
6
1
8 .
0
2
1
u
u
H
H
SS14
R3
5.11K
D1
1.5nF
I
C4
I
H
H
L
L
P
P
L
2 -
2 -
1
5
5
2
2
5
5
R1
17.4K
R2
649
B
B
D
D
_
_
0
0
1
1
VOUT
10µF
C2
35V
18
Figure 13(b). Efficiency of the All Ceramic Capacitor High
90
85
80
75
70
65
60
55
50
0
1.4MHz 6.8 H
Voltage Application
0.05
Efficiency at 14V input
SC4502/SC4502H
Load (A)
0.1
1.0MHz 10 H
0.15
www.semtech.com
0.2