BUXXTA2WNVX Datasheet, PDF (8/28 Pages) Rohm – High-speed Load Response FULL CMOS LDO Regulators

BUTA2WNVX Series, BUTA2WHFV Series
●Reference data BU18TA2WNVX / HFV (Unless otherwise specified, Ta=25℃)
Technical Note
3.5
3.0
2.5
2.0
1.5
IO=0uA
1.0
IO=100uA
IO=50mA
0.5
IO=200mA
Temp=25°C
VIN = STBY
0.0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Vin Voltage (V)
Fig. 34 Output Voltage
1.85
1.84
IO=0uA
1.83
IO=100uA
IO=50mA
1.82
IO=200mA
1.81
1.80
1.79
1.78
1.77
Temp=25°C
1.76
VIN = STBY
1.75
1.75
1.85
1.95
2.05
2.15
2.25
2.35
Vin Voltage (V)
Fig. 35 Line Regulation
100
80
60
40
Temp=-40°C
20
Temp=25°C
IO=0uA
Temp=85°C _{VIN = STBY}
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Vin Voltage (V)
Fig. 36 Circuit Current IGND
140
120
100
80
60
Temp=-40°C
40
Temp=25°C
Temp=85°C
20
IO=200mA
VIN = STBY
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Vin Voltage (V)
Fig. 37 Circuit Current IGND
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
1.75
0
Temp=25°C
Temp=-40°C
Temp=85°C
VIN = 3.5V
STBY = 1.5V
0.05
0.1
0.15
0.2
Output Current (A)
Fig. 40 Load Regulation
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
VIN=3.5V
1.77
STBY=1.5V
1.76
Io=0.1mA
1.75
-40
-15
10
35
60
85
Temp (°C)
Fig. 43 VOUT vs Temp
10
8
Temp=85°C
Temp=25°C
6
Temp=-40°C
4
2
VIN = STBY
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
STBY Voltage (V)
Fig. 38 STBY Input Current
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
0.00
VIN=5.5V
VIN=3.5V
VIN=2.5V
Temp=25°C
STBY = 1.5V
0.10
0.20
0.30
0.40
0.50
0.60
Output Current (A)
Fig. 41 OCP Threshold
50.00
40.00
30.00
20.00
10.00
VIN=3.5V
STBY=1.5V
Io=0mA
0.00
-40
-15
10
35
60
85
Temp (°C)
Fig. 44 IGND vs Temp
120
110
100
90
80
70
60
50
40
0
Temp=85°C
Temp=25°C
Temp=-40°C
VIN = 3.5V
STBY = 1.5V
0.05
0.1
0.15
0.2
Output Current (A)
Fig. 39 IOUT - IGND
3.50
3.00
2.50
2.00
1.50
1.00
Temp=85°C
Temp=25°C
0.50
Temp=-40°C
0.00
0
0.5
1
1.5
STBY Voltage (V)
Fig. 42 STBY Threshold
1.000
0.900
0.800
0.700
0.600
0.500
0.400
0.300
0.200
0.100
0.000
VIN=3.5V
STBY=0V
-0.100
-40 -15 10 35 60 85
Temp (°C)
Fig. 45 IGND vs Temp (STBY)
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
8/27
2009.05 - Rev.B