APL5915 Anpec Electronics Corporation, APL5915 Datasheet - Page 9

• Manufacturer Part Number: APL5915
• Description: 0.8v Reference Ultra Low Dropout 0.2v@1.5a Linear Regulator
• Manufacturer: Anpec Electronics Corporation

APL5915
Operating Waveforms (Cont.)
Copyright
Rev. A.3 - Apr., 2008
1. Load Transient Response :
1.2
Ch1 : V
Ch2 : I
Time : 1 s/Div
Ch1 : V
Ch2 : I
Time : 1 s/Div
Using an MLCC as the Output Capacitor
- C
- I
OUT
I
OUT
OUT
1.1
I
V
V
OUT
OUT
OUT
OUT
OUT
V
, 500mA/Div
- C
OUT
OUT
V
V
OUT
, 500mA/Div
, 100mV/Div
V
- I
OUT
OUT
, 50mV/Div
= 10mA to 1.5A to 10mA, Rise time = Fall time = 1 s
Using an Output Capacitor with ESR 18m
OUT
ANPEC Electronics Corp.
= 10mA ->1.5A
= 22 F/6.3V (ESR = 3m ), C
= 10mA ->1.5A
OUT
OUT
= 150 F/6.3V (ESR = 30m ), C
= 10mA to 1.5A to 10mA, Rise time = Fall time = 1 s
I
I
OUT
OUT
I
I
I
OUT
I
OUT
OUT
OUT
1
1
2
2
1
1
2
2
Ch1 : V
Ch2 : I
Time : 20 s/Div
Ch1 : V
Ch2 : I
Time : 20 s/Div
IN
I
R1=39kΩ, R2=78kΩ, C1=56pF
R1=39kΩ, R2=78kΩ, C1=56pF
I
OUT
R1=1kΩ, R2=2kΩ, C1=33nF
R1=1kΩ, R2=2kΩ, C1=33nF
OUT
= 22 F/6.3V
= 10mA -> 1.5A ->10mA
OUT
= 10mA -> 1.5A ->10mA
OUT
OUT
V
V
OUT
IN
, 500mA/Div
V
OUT
OUT
, 500mA/Div
, 100mV/Div
OUT
= 22 F/6.3V
, 50mV/Div
V
V
V
OUT
OUT
OUT
I
I
I
OUT
OUT
OUT
9
I
I
I
OUT
OUT
OUT
1
1
2
2
1
1
2
2
Ch1 : V
Ch2 : I
Time : 1 s/Div
Ch1 : V
Ch2 : I
Time : 1 s/Div
V
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
I
OUT
OUT
OUT
I
OUT
, 500mA/Div
, 500mA/Div
, 100mV/Div
, 50mV/Div
= 1.5A ->10mA
= 1.5A ->10mA
I
I
OUT
OUT
I
OUT
I
I
I
OUT
OUT
OUT
www.anpec.com.tw
1
1
2
2
1
1
2
2