RV5VH Datasheet, PDF (30/47 Pages) RICOH electronics devices division – DC/DC CONVERTER CONTROLLER

RV5VH1××/RV5VH2××
8) On Resistance of LX vs. Supply Voltage
RV5VH1××
5.0
85˚C
4.5
4.0
25˚C
3.5
3.0
–40˚C
2.5
2.0
1.5
1.0
0.5
0.0
0.0 1.0 2.0 3.0 4.0 5.0 6.0
Supply Voltage VOUT1(V)
9) EXT1 Output Current vs. Temperature
RV5VH201 _VOUT1=3V
18
16
14
12
“L” Output Current
10
8
“H” Output Current
6
4
2
0
–60 –40 –20 0 20 40 60 80 100
Temperature Topt(˚C)
10) Start-up/Hold-on Voltage vs. Output Current
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
RV5VH1××/2××
Topt=25˚C
VOUT1=3V
L1=100µH
C1=22µF
Vstart
Vhold
10
20
30
40
50
Output Current IOUT(mA)
RV5VH202 _VOUT1=5V
18
16
14
“L” Output Current
12
10
8 _{“H” Output Current}
6
4
2
0
–60 –40 –20 0 20 40 60 80 100
Temperature Topt(˚C)
11) Input Current vs. Intput Voltage
Topt=25˚C
CSW=GND
10^–0
RV5VH101
L1=100µH
C1=22µF
10^–1
10^–2
IOUT=30mA
IOUT=5mA
IOUT=1mA
10^–3
10^–4
10^{–5 IOUT=0A}
10^–6
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Input Voltage VIN(V)
29