ACT4050
Active- Semi
Rev 2, 01-Jul-11
TYPICAL PERFORMANCE CHARACTERISTICS CONT’D
(Circuit of Figure 5, unless otherwise specified.)
Start-up/Shutdown by VIN Pin
Start-up/Shutdown by VIN Pin
CH1
CH2
CH1
CH2
VIN = 12V
OUT = 5V
1ꢀ Load
VIN = 12V
VOUT = 5V
No Load
VIN = 12V
VOUT = 5V
ILOAD = 1A
V
CH1: VIN, 5.0V/div
CH2: VOUT, 2V/div
TIME: 100µs/div
CH1: VIN, 5.0V/div
CH2: VOUT, 2V/div
TIME: 100µs/div
Start-up/Shutdown by EN Pin
Start-up/Shutdown by EN Pin
CH1
CH2
CH1
CH2
VIN = 12V
VOUT = 5V
2ꢀ Load
VIN = 12V
OUT = 5V
No Load
V
CH1: VEN, 2.0V/div
CH2: VOUT, 2.0V/div
TIME: 400µs/div
CH1: VEN, 2.0V/div
CH2: VOUT, 2.0V/div
TIME: 200µs/div
Switching Waveform
Switching Waveform
CH1
CH2
CH1
VIN = 12V
VOUT = 5V
I
LOAD = 1A
CH2
VIN = 12V
VOUT = 3.3V
ILOAD = 1A
CH1: VOUT, 20mV/div (AC COUPLED)
CH2: VSW, 5.0V/div
TIME: 1µs/div
CH1: VOUT, 20mV/div (AC COUPLED)
CH2: VSW, 5.0V/div
TIME: 1µs/div
Innovative PowerTM
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