BU6650NUX_11 Datasheet, PDF (10/22 Pages) Rohm – 3ch CMOS LDO Regulators

BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note
●Reference data Vo=2.8V (Ta=25ºC unless otherwise specified.)
3.5
3.0
2.5
2.0
IO=0uA
IO=100uA
1.5
IO=50mA
1.0
IO=200mA
0.5
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. 40 Output Voltage
2.85
2.84
2.83
2.82
2.81
2.80
2.79
2.78
2.77
2.76
2.75
2.7
IO=0uA
IO=100uA
IO=50mA
IO=200mA
Temp.=25°C
VIN = STBY
2.8
2.9
3
3.1
3.2
Vin Voltage (V)
Fig. 41 Line Regulation
100
80
IO=0uA
VIN = STBY
60
40
Temp.=-40°C
Temp.=25°C
20
Temp.=85°C
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Vin Voltage (V)
Fig. 42 Circuit Current IGND
0.40
0.35
0.30
T emp. = 85°C
0.25
0.20
T emp. = 25°C
0.15
T emp.= -40°C
0.10
0.05
0.00
0
VIN=0.98 x VOUT
STBY = 1.5V
0.05
0.1
0.15
0.2
Output Current (A)
Fig. 43 Dropout Voltage
Fig. 46 Load Regulation
80
70
60
50
40
30
20
10
0
0.1
Vin= 3.8V
Io=10mA
Ta = 25℃
1
10
100
1000
Frequency (kHz)
Fig. 49 Ripple Rejection VS Freq.
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10
8
T emp. = 85°C
6
T emp. = 25°C
4
T emp. = -40°C
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. 44 STBY Input Current
Fig. 47 OCP Threshold
80
70
60
50
40
30
20
10
0
2.8
f= 0 .1 kHz
f= 1 kHz
f= 1 0 kHz
f= 1 0 0 kHz
Co=1.0μF
Cin=none
Iout=10mA
temp=25℃
3.8
4.8
Input Voltage VIN[V]
Fig. 50 Ripple Rejection VS VIN
120
110
100
90
80
70
60
50
40
0
T emp. = 85°C
T emp. = 25°C
T emp. = -40°C
VIN = 3.8V
STBY = 1.5V
0.05
0.1
0.15
0.2
Output Currnt (A)
Fig. 45 IOUT - IGND
2.85
2.84
2.83
2.82
2.81
2.80
2.79
2.78
2.77
2.76
2.75
-40
VIN=3.8V
STBY=1.5V
Io=0.1mA
-15
10
35
60
85
Temp. (°C)
Fig. 48 VOUT vs Temp
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0.1
Co=1.0μF
Cin=1.0μF
Iout=10mA
temp=25℃
1
10
100
Frequency f [kHz]
Fig. 51 Output Noise Spectral
Density VS Freq.
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2011.03 - Rev.E