APL5912
Operating Waveforms (Cont.)
1.2 Using an MLCC as the Output Capacitor
- COUT = 22µF/6.3V (ESR = 3mΩ), CIN = 22µF/6.3V
- IOUT = 10mA to 5A to 10mA, Rise time = Fall time = 1µS
IOUT = 10mA -> 5A
1
VOUT
IOUT = 10mA -> 5A ->10mA
R1=39kΩ, R2=78kΩ
C1=30pF
1
1
VOUT
IOUT = 5A -> 10mA
VOUT
IOUT
2
Ch1 : VOUT, 100mV/Div
Ch2 : IOUT, 2A/Div
Time : 2µS/Div
IOUT
2
Ch1 : VOUT, 100mV/Div
Ch2 : IOUT, 2A/Div
Time : 20µS/Div
IOUT
2
Ch1 : VOUT, 100mV/Div
Ch2 : IOUT, 2A/Div
Time : 2µS/Div
2. Power ON / Power OFF :
- VIN = 1.5V, VCNTL = 5V,VOUT = 1.2V
- COUT = 220µF/6.3V (ESR = 30mΩ), CIN = 100µF/6.3V, RL = 1Ω
Power ON
Ch1
Ch2
Ch3
Ch4
VIN
VOUT
VCNTL
VPOK
Ch1
Ch2
Ch3
Ch4
Ch1 : VIN,1V/div
Ch2 : VOUT,1V/div
Ch3 : VPOK,1V/div
Ch4 : VCNTL,2V/div
Time : 10ms/div
Ch1 : VIN,1V/div
Ch2 : VOUT,1V/div
Ch3 : VPOK,1V/div
Ch4 : VCNTL,2V/div
Time : 10ms/div
Copyright © ANPEC Electronics Corp.
9
Rev. A.6 - Jun., 2005
Power OFF
VIN
VOUT
VCNTL
VPOK
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