ACT4515
Rev 6, 14-Nov-12
TYPICAL PERFORMANCE CHARACTERISTICS CONT’D
(Circuit of Figure 7, IISET = 0.9A, L = 82µH, CIN = 10µF, COUT = 22µF, TA = 25°C, unless otherwise specified.)
SW vs. Output Voltage Ripples
Start up with EN
VIN = 24V
V0UT = 5V
I0UT = 0.9A
VIN = 12V
V0UT = 5V
I0UT = 0.9A
CH1
CH1
CH2
CH2
CH1: SW, 10V/div
CH2: VRIPPLE, 50mV/div
TIME: 2µs/div
CH1: EN, 1V/div
CH2: VOUT, 1V/div
TIME: 10ms/div
Load Step Waveforms
Start up with EN
VIN = 24V
0UT = 5V
IISET = 0.9A
VIN = 12V
V0UT = 5V
IISET = 0.9A
V
CH1
CH2
CH1
CH2
CH1: IOUT, 500mA/div
CH2: VOUT, 500mV/div
TIME: 100μs/div
CH1: EN, 1V/div
CH2: VOUT, 1V/div
TIME: 10ms/div
Short Circuit
Load Step Waveforms
VIN = 12V
V0UT = 5V
IISET = 0.9A
VIN = 24V
V0UT = 5V
IISET = 0.9A
CH1
CH2
CH1
CH2
CH3
CH1: IOUT, 500mA/div
CH2: VOUT, 500mV/div
TIME: 100μs/div
CH1: VOUT, 2V/div
CH2: IOUT, 1A/div
CH3: SW
TIME: 20µs/div
Innovative PowerTM
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