BA3258HFP_09 Datasheet, PDF (4/9 Pages) Rohm – Dual-output Secondary Fixed Output LDO Regulators for Local Power Supplies

BA3258HFP, BA33D15HFP, BA33D18HFP
Technical Note
BA33D15HFP Electrical Characteristics Curves (Unless otherwise specified, Ta = 25℃, Vcc = 5V)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0 2 4 6 8 10 12 14 16 18
SUPPLY VOLTAGE：Vcc［V］
Fig. 13 Circuit Current (with no
load)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0 2 4 6 8 10 12 14 16 18
SUPPLY VOLTAGE：Vcc［V］
Fig. 16 Input Stability
(3.3 V output, Io1 = 250 mA）
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
OUTPUT CURRENT：Io2［A］
Fig. 19 Load Stability
(1.5 V output)
3.45
3.40
3.35
3.30
3.25
3.20
3.15
-25 -10 5 20 35 50 65 80 95
TEMPERATURE：Ta［℃］
Fig. 22 Output Voltage vs Temperature
(3.3 V output)
40
35
30
25
20
15
10
5
0
0.0 0.1 0.2 0.3 0.4 0.5
OUTPUT CURRENT：Io1［A］
Fig. 14 Circuit Current vs Load Current
Io1 (Io1 = 0  500 mA)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0 2 4 6 8 10 12 14 16 18
SUPPLY VOLTAGE：Vcc［V］
Fig. 17 Input Stability
(1.5 V output, Io2 = 250 mA)
0.5
0.4
0.3
0.2
0.1
0.0
0.0 0.1 0.2 0.3 0.4 0.5
OUTPUT CURRENT：Io1［A］
Fig. 20 I/O Voltage Difference
(Vcc = 3.135 V, 3.3 V output)
1.60
1.55
1.50
1.45
1.40
-25 -10 5 20 35 50 65 80 95
TEMPERATURE：Ta［℃］
Fig. 23 Output Voltage vs Temperature
(1.5 V output)
40
35
30
25
20
15
10
5
0
0.0 0.1 0.2 0.3 0.4 0.5
OUTPUT CURRENT：Io2［A］
Fig. 15 Circuit Current vs Load
Current Io2 (Io2 = 0  500 mA)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
OUTPUT CURRENT：Io1［A］
Fig. 18 Load Stability
(3.3 V output)
80
70
Vo2(1.5V output)
60
50
Vo1(3.3V output)
40
30
20
10
0
100
1000
FREQUENCY：f［Hz］
10000
Fig. 21 R.R. Characteristics
(ein = 1 Vp-p, Io = 100 mA)
1050
950
850
750
650
550
450
350
250
-25 -5 15 35 55 75 95
TEMPERATURE：Ta［℃］
Fig. 24 Circuit Current vs Temperature
(Io = 0 mA)
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4/8
2009.04 - Rev.A