Datasheet
Technical Note
5/11
www.rohm.com
2011.03 - Rev.C
© 2011 ROHM Co., Ltd. All rights reserved.
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
0
1
2
3
4
5
6
7
8
0 5 10 15 20 25 30 35 40
SUPPLY VOLTAGE
：
Vcc [V]
OUTPUT VOLTAGE
：
V
OUT
[V]
[BA50DD0WT]
0
2
4
6
8
130 140 150 160 170 180 190
AMBIENT TEMPERATURE
：
Ta [
℃
]
OUTPUT VOLTAGE
：
V
OUT
[V]
[BA50DD0WT]
0
1
2
3
4
5
6
7
8
024681012141618202224
CONTROL VOLTAGE
：
V
CTL
[V]
OUTPUT VOLTAGE
：
V
OUT
[V]
[BA50DD0WT]
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 4.4 4.8
OUTPUT CURRENT
：
IOUT [A]
OUTPUT VOLTAGE
：
V
OUT
[V]
[BA50DD0WT]
0
100
200
300
400
500
600
700
800
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
OUTPUT CURRENT
：
IOUT [A]
DROPOUT VOLTAGE
：
V
DRP
[mV]
[BA50DD0WT]
0
10
20
30
40
50
60
10 100 1000 10000 100000 1000000
FREQUENCY
：
f [Hz]
RIPPLE REJECTION
：
R.R. [dB]
[BA50DD0WT]
4.8
4.9
5.0
5.1
5.2
-40 -20 0 20 40 60 80 100
AMBIENTTEMPERATURE [
℃
]
OUTPUT VOLTAGE
：
VOUT [V]
[BA50DD0WT]
0
20
40
60
80
100
120
140
160
180
200
0.0 0.5 1.0 1.5 2.0
OUTPUT CURRENT
：
I
OUT
[A]
CIRCUIT CURRENT (mA)
[BA50DD0WT]
0
100
200
300
400
500
600
700
800
0246 81012141618202224
CONTROL VOLYAGE:Vctl
（
V)
CONTROL CURRENT:ICTL(µA)
[BA50DD0WT]
0
1
2
3
4
5
6
024681012141618202224
SUPPLY VOLTAGE
：
Vcc [V]
CIRCUIT
Ｃ
URRENT
：
Icc [mA]
[BA50DD0WT]
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
024681012141618202224
SUPPLY VOLTAGE
：
Vcc [V]
OUTPUT VOLTAGE
：
V
OUT
[V]
[BA50DD0WT]
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
024681012141618202224
SUPPLY VOLTAGE
：
Vcc [V]
OUTPUT VOLTAGE
：
V
OUT
[V]
[BA50DD0WT]
●Reference Data (Unless specified otherwise, Vcc=7.0V, Vo=5.0V, VCTL=3.0V, and Io=0mA)
BA□□DD0□□(BA50DD0WT)
Fig.22 CTL Voltage vs. Output Voltage
Fig.24 Thermal Shutdown
Circuit Characteristics
Fig.20 Circuit Current by Load Level
Fig.21 CTL Voltage vs. CTL Current Fig.19 Temperature Characteristics
Fig.23 Overvoltage Operating
Fig.15 Input Stability (Io=2A)
Fig.13 Circuit Current
Fig.14 Input Stability
Fig.17 Input/Output Voltage Difference
Fig.16 Load Stability
Fig.18 Ripple Rejection Characteristics