BU6650NUX_11 Datasheet, PDF (7/22 Pages) Rohm – 3ch CMOS LDO Regulators

BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note
3.35
3.34
3.33
3.32
Temp.=25°C
Temp.=-40°C
3.31
3.30
3.29
3.28
Temp.=85°C
3.27
3.26
VIN = 4.3V
STBY = 1.5V
3.25
0
0.05
0.1
0.15
0.2
Output Current (A)
Fig. 17 Load Regulation
3.35
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
3.25
-40
VIN=4.3V
STBY=1.5V
Io=0.1mA
-15
10
35
60
85
Temp. (°C)
Fig. 20 VOUT vs Temp
80
70
60
50
40
30
20
Vin= 4.3V
Io=10mA
10
Ta = 25℃
0
0.1
1
10
100
1000
Frequency (kHz)
Fig. 23 Ripple Rejection VS Freq.
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
0
VIN=5.5V
VIN=3.8V
VIN=4.3V
STBY = 1.5V
Temp=25℃
0.1
0.2
0.3
0.4
0.5
0.6
Output Current (A)
Fig. 18 OCP Threshold
3.50
VIN=4.3V
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. 19 STBY Threshold
50.00
40.00
30.00
20.00
10.00
0.00
-40
-15
10
35
Temp. (°C)
VIN=4.3V
STBY=1.5V
Io=0mA
60
85
Fig. 21 IGND vs Temp
80
70
60
50
40
30
20
10
0
3.3
f= 1 kHz
f= 0 .1 kHz
f= 1 0 kHz
f= 1 0 0 kHz
Co=1.0μF
Cin=none
Iout=10mA
temp=25℃
4.3
5.3
Input Voltage VIN[V]
Fig. 24 Ripple Rejection VS VIN
1.000
0.900
0.800
0.700
0.600
0.500
0.400
0.300
0.200
0.100
0.000
-0.100
-40
VIN=4.3V
STBY=0V
-15
10
35
60
85
Temp. (°C)
Fig. 22 IGND vs Temp (STBY)
1.8
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. 25 Output Noise Spectral
Density VS Freq.
Fig. 26 Load Response
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Fig. 27 Load Response
2011.03 - Rev.E