ACT4533
Rev 1, 25-Feb-13
TYPICAL PERFORMANCE CHARACTERISTICS CONT’D
(L = 47µH, CIN = 10µF, COUT = 47µF, Ta = 25°C, RCOMP = 2.2k, CCOMP1 = 4.7nF, CCOMP2 = 47pF)
Standby Current vs. Input Voltage
Shutdown Current vs. Input Voltage
140
120
100
80
3.5
3
2.5
2
1.5
1
60
0.5
0
40
8
13
18
23
28
33
38
43
10
15
20
25
30
35
40
Input Voltage (V)
Input Voltage (V)
Start up into CC mode
Reverse Leakage Current (VIN Floating)
160
120
80
VOUT = 5V
RLORD = 1.5ꢀ
IISET = 2A
VIN = 12V
CH1
CH2
40
0
0
1
2
3
4
5
CH1: VOUT, 2V/div
CH2: IOUT, 1A/div
TIME: 1ms/div
VOUT (V)
Start up into CC mode
SW vs. Output Voltage Ripples
VIN = 12V
VOUT = 5V
IOUT = 2.1A
CH1
CH1
CH2
CH2
VOUT = 5V
RLORD = 1.5ꢀ
IISET = 2A
VIN = 24V
CH1: VOUT, 2V/div
CH2: IOUT, 1A/div
TIME: 1ms/div
CH1: SW, 5V/div
CH2: VOUT Ripple, 50mV/div
TIME: 4µs/div
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