SC4502H Semtech Corporation, SC4502H Datasheet - Page 16

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

Figure 11(b). Load Transient Response of the Circuit in Figure
POWER MANAGEMENT
Typical Application Circuits
2005 Semtech Corp.
Upper Trace : Output Voltage, AC Coupled, 0.5V/div
Lower Trace : Input Inductor Current, 0.2A/div
11(a). I
450mA at 1A/ s.
LOAD
is switched between 150mA and
3.6 - 6V
4-CELL
Figure 11(a). 1.5 MHz All Ceramic Capacitor 4-Cell to 5V SEPIC Converter.
40 s/div
2.2 F
C1
OFF
47nF
V
C3
IN
=3.6V
L1 and L2: Coiltronics DRQ73-3R3
ON
10
3
SHDN
SS
IN
GND
8
4,5
SC4502
3.3 H
L1
ROSC
9
COMP
6,7
SW
R4
7.68K
FB
16
Figure 11(c). Load Transient Response of the Circuit in Figure
2
1
R3
35.7K
Upper Trace : Output Voltage, AC Coupled, 0.5V/div
Lower Trace : Input Inductor Current, 0.2A/div
C4
1.5nF
2.2 F
C6
11(a). I
700mA at 1A/ s.
C6
22pF
L2
3.3 H
10BQ015
LOAD
D1
40 s/div
is switched between 250mA and
SC4502/SC4502H
60.4K
20K
R1
R2
VOUT
5V, 0.5A
10 F
C2
V
IN
=6V
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