
Technical Note
6/29
BUTA2WNVX series, BUTA2WHFV series
www.rohm.com
2011.01 - Rev.C
2011 ROHM Co., Ltd. All rights reserved.
Fig. 5 Output Voltage
Fig. 6 Line Regulation
Fig. 14 VOUT vs. Temp
●
Reference data BU15TA2WNVX / HFV (Ta=25C unless otherwise specified.)
Fig. 7 Circuit Current IGND
Fig. 8 Circuit Current IGND
Fig. 9 STBY Input Current
Fig. 10 IOUT - IGND
Fig. 16 IGND vs. Temp (STBY)
Fig. 15 IGND vs. Temp
Fig. 11 Load Regulation
Fig. 13 STBY Threshold
Fig. 12 OCP Threshold
0.0
0.3
0.6
0.9
1.2
1.5
1.8
00.511.52
2.533.544.555.5
Vin Voltage (V)
O
ut
put
V
ol
tag
e
(
V
)
IO=0uA
IO=100uA
IO=50mA
IO=200mA
Temp=25°C
VIN = STBY
1.45
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
1.55
1.25 1.35 1.45 1.55 1.65 1.75 1.85 1.95 2.05 2.15 2.25
Vin Voltage (V)
O
ut
put
V
ol
tage
(
V
)
IO=0uA
IO=100uA
IO=50mA
IO=200mA
Temp=25°C
VIN = STBY
0
20
40
60
80
100
00.51
1.522.533.54
4.555.5
Vin Voltage (V)
G
nd
C
ur
ren
t(
uA
)
Temp=-40°C
Temp=25°C
Temp=85°C
IO=0uA
VIN = STBY
0
20
40
60
80
100
120
140
00.51
1.522.533.54
4.555.5
Vin Voltage (V)
G
nd
C
urr
en
t(u
A
)
IO=200mA
VIN = STBY
Temp=-40°C
Temp=25°C
Temp=85°C
0
2
4
6
8
10
0
0.51
1.522.533.5
4
4.555.5
STBY Voltage (V)
ST
BY
C
ur
re
nt
(
uA)
VIN = STBY
Temp=85°C
Temp=25°C
Temp=-40°C
40
50
60
70
80
90
100
110
120
0
0.05
0.1
0.15
0.2
Output Current (A)
G
nd
C
ur
rent
(
uA
)
VIN = 3.5V
STBY = 1.5V
Temp=85°C
Temp=25°C
Temp=-40°C
1.45
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
1.55
0
0.05
0.1
0.15
0.2
Output Current (A)
O
ut
put
V
ol
tage
(
V
)
VIN = 3.5V
STBY = 1.5V
Temp=-40°C
Temp=25°C
Temp=85°C
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
0.00
0.10
0.20
0.30
0.40
0.50
0.60
Output Current (A)
O
ut
put
V
ol
tage
(
V
)
VIN=5.5V
Temp=25°C
STBY = 1.5V
VIN=3.5V
VIN=2.5V
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
0
0.5
1
1.5
STBY Voltage (V)
O
ut
put
V
ol
tage
(
V
)
Temp=85°C
Temp=25°C
Temp=-40°C
1.45
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
1.55
-40
-15
10
35
60
85
Temp (°C)
O
ut
put
V
ol
tag
e(
V
)
VIN=3.5V
STBY=1.5V
Io=0.1mA
0.00
10.00
20.00
30.00
40.00
50.00
-40
-15
10
35
60
85
Temp (°C)
Input
C
ur
rent
(
uA
)
VIN=3.5V
STBY=1.5V
Io=0mA
-0.100
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0.900
1.000
-40
-15
10
35
60
85
Temp (°C)
G
nd
C
ur
re
nt
(
uA
)
VIN=3.5V
STBY=0V