R1212D Datasheet, PDF (29/41 Pages) RICOH electronics devices division – STEP-UP DC/DC CONTOLLER

R1212D
21) DELAY Pin Discharge Current vs. Temperature
R1212D10xx
VIN=2.2V, VDLY=0.1V
300
22) VREFOUT Voltage vs. Temperature
R1212D10xx
1.53
VIN=3.3V
250
1.52
200
1.51
150
1.50
100
50
1.49
0
-50 -25 0 25 50 75 100
Temperature Topt(°C)
1.48
-50 -25 0 25 50 75 100
Temperature Topt(°C)
23) VREFOUT Voltage vs. Input Voltage (Topt=25°C) 24) VREFOUT Voltage vs. Output Current (1) (Topt=25°C)
R1212D10xx
R1212D10xx
1.53
1515
1.52
1.51
1.50
1.49
1.48
2
3
4
5
6
Input Voltage VIN(V)
1510
1505
1500
1495
1490
1485
0
VIN=2.2V
VIN=3.3V
VIN=5.5V
2
4
6
8
10
Output Current IROUT(mA)
25) VREFOUT Voltage vs. Output Current (2) (Topt=25°C) 26) Error Amplifier Gain/Phase vs. Frequency (Topt=25°C)
R1212D10xx
R1212D10xx
1600
VIN=3.3V
180
1400
160
1200
140
120
1000
100
800
600
400
200
0
0
VIN=2.2V
VIN=3.3V
VIN=5.5V
20
40
60
80
Output Current IROUT(mA)
80
60
40
20
0
-20
0
Phase
Gain
10
100 1000
Frequency freq.(kHz)
10000
29