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LP2985-25 Datasheet(PDF) 8 Page - Texas Instruments

Part No. LP2985-25
Description  150-mA Low-noise Low-dropout Regulator With Shutdown
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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LP2985-25 Datasheet(HTML) 8 Page - Texas Instruments

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0.001
0.01
0.1
1
10
10
100
1k
10k
100k
1M
Frequency − (Hz)
Ci = 1 mF
Co = 10 mF
VO = 3.3 V
10 mA
100 mA
1 mA
0
10
20
30
40
50
60
70
80
90
100
10
100
1k
10k
100k
1M
Frequency − (Hz)
VI = 5 V
VO = 3.3 V
Co = 4.7 mF
Cbyp = 10 nF
10 mA
100 mA
1 mA
0
10
20
30
40
50
60
70
80
90
100
10
100
1k
10k
100k
1M
Frequency − (Hz)
50 mA
150 mA
1 mA
VI = 3.7 V
VO = 3.3 V
Co = 10 mF
Cbyp = 0 nF
0
10
20
30
40
50
60
70
80
90
100
10
100
1k
10k
100k
1M
Frequency − (Hz)
VI = 5 V
VO = 3.3 V
Co = 4.7 mF
Cbyp = 10 nF
50 mA
150 mA
1 mA
0
10
20
30
40
50
60
70
80
90
100
10
100
1k
10k
100k
1M
Frequency − (Hz)
VI = 5 V
VO = 3.3 V
Co = 10 mF
Cbyp = 0 nF
50 mA
150 mA
1 mA
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
0
20
40
60
80
100
120
140
Load Current − mA
160
VO = 3.3 V
Cbyp = 10 nF
LP2985
SLVS522O – JULY 2004 – REVISED JANUARY 2015
www.ti.com
Typical Characteristics (continued)
CIN = 1 μF, COUT = 4.7 μF, VIN = VOUT(NOM) + 1 V, TA = 25°C, ON/OFF pin tied to VIN (unless otherwise specified)
Figure 7. Ground Pin Current vs Load Current
Figure 8. Ripple Rejection vs Frequency
Figure 9. Ripple Rejection vs Frequency
Figure 10. Ripple Rejection vs Frequency
Figure 11. Ripple Rejection vs Frequency
Figure 12. Output Impedance vs Frequency
8
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Copyright © 2004–2015, Texas Instruments Incorporated


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