RT917207 Просмотр технического описания (PDF) - Richtek Technology
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RT917207 Datasheet PDF : 15 Pages
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RT9172
PSRR
-15
VOUT = 2.5V
-20 COUT = 10uF (Electrolytic)
ILOAD = 100mA
-25
ILOAD = 10mA
-30
-35
-40
-45
-50
-55
10
100
1K
10K
100K
1M
Frequency (Hz)
EN Pin Shutdown Response
2
1
0
VOUT = 1.8V
CIN = 1uF (Ceramic)
≈
2
1
0
COUT = 10uF (Tantalum)
ILOAD = 100mA
TA = 25°C
≈
0 1 2 3 4 5 6 7 8 9 10
Time (ms)
Line Transient Response
CIN = 1uF (Ceramic)
40 VOUT = 2.5V
TA = 25°C
20
COUT = 10uF (Electrolytic)
ILOAD = 100mA
0
≈
≈
5.5
4.5
3.5
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Time (ms)
DS9172-14 March 2007
Load Regulation Deviation
0.00
-0.03
-0.06
-0.09
-0.12
-0.15
VOUT = 2.5V
CIN = 1uF (Ceramic)
COUT = 10uF (Tantalum)
ILOAD = 10mA
-35 -15 5 25 45 65 85
Temperature (°C)
105 125
Range of Stable ESR Values
100
CIN = 1uF (MLCC)
10
COUT = 10uF (MLCC)
Stable Region
1
0.1
Reqion of Instability
0.01
0
0.5
1
1.5
2
2.5
3
Output Current (A)
Line Transient Response
CIN = 1uF (Ceramic)
40 VOUT = 2.5V
TA = 25°C
20
COUT = 10uF (Tantalum)
ILOAD = 100mA
0
≈
≈
5.5
4.5
3.5
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Time (ms)
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