R1215D Datasheet, PDF (19/22 Pages) RICOH electronics devices division – STEP-UP DC/DC CONTOLLER

R1215D
13) Error Amplifier Frequency Characteristics (Topt=25°C)
R1215D002X
VIN=2.5V
200
150
Phase
100
50
Gain
0
-50
1
10
100 1000 10000
Freguency f(kHz)
Error Amplifier
100kΩ
1kΩ
14) Load Transient Response (VIN=2.5V,Topt=25°C)
R1215D002A/E
Frequency=700kHz
9.2
280
9.2
9.1
240
9.1
9.0
200
9.0
8.9
VOUT
8.8
160
8.9
120
8.8
8.7
80
8.7
8.6
IOUT
40
8.6
8.5
0
8.5
8.4
-40
8.4
0
4
8
12
Time t (ms)
R1215D002B/F
Frequency=1.4MHz
280
240
200
160
VOUT
120
80
IOUT
40
0
-40
0
4
8
12
Time t (ms)
15) Power On Response (VIN=2.5V,Topt=25°C,ROUT=150Ω)
R1215D002A/E
10
10
8
8
6
6
4
4
2
2
0
0
05
15
25
0
Time t (ms)
R1215D002B/F
5
15
25
Time t (ms)
19