BU665XNUX Datasheet, PDF (10/18 Pages) Rohm – High-speed Load Response Full CMOS LDP Regulators

BU6650NUX, BU6651NUX, BU6652NUX, BU6653NUX
●Reference data Vo=1.8V (Ta=25ºC unless otherwise specified.)
Technical Note
80
70
60
50
40
30
20
Vin= 3.5V
Io=10mA
10
Ta = 25℃
0
0.1
1
10
100
1000
Frequency (kHz)
Fig. 49. Ripple Rejection VS Freq.
80
f= 0 .1 kHz
70
60
f= 1 kHz
50
f= 1 0 kHz
40
30
20
10
0
2.5
f= 1 0 0 kHz
Co=1.0μF
Cin=none
Iout=10mA
temp=25℃
3.5
4.5
5.5
Input Voltage VIN[V]
Fig. 50. Ripple Rejection VS VIN
0.7
0.6
0.5
0.4
0.3
0.2
0.1
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.
Fig. 52. Load Response
Fig. 53. Load Response
Fig. 54. Load Response
Fig. 55. Load Response
⇔
Fig. 56. Load Response
Current Pulse=10kHz
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Fig. 57. Load Response
Current Pulse=10kHz
2009.09 - Rev.B