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LP2985 датащи(PDF) 24 Page - Texas Instruments

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номер детали LP2985
подробное описание детали  LP2985 150-mA, Low-Noise, Low-Dropout Regulator With Shutdown
PDF  41 Pages
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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LP2985 датащи(HTML) 24 Page - Texas Instruments

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8.2.3 Application Curves
at operating temperature TJ = 25°C, VIN = VOUT(NOM) + 1.0 V or 2.5 V (whichever is greater), IOUT = 1 mA,
ON/OFF pin tied to VIN, CIN = 1.0 µF, and COUT = 4.7 µF (unless otherwise noted)
3.22
3.24
3.26
3.28
3.3
3.32
3.34
3.36
3.38
3.4
−250
−200
−150
−100
−50
0
50
100
150
200
20 ms/div→
VO = 3.3 V
Cbyp = 10 nF
DIL = 100 mA
IL
VO
Figure 8-3. Load Transient Response for Legacy
Chip
20
s/div
0
20
40
60
80
100
120
140 150
3.1
-300
3.16
-250
3.22
-200
3.28
-150
3.34
-100
3.4
-50
3.46
0
3.52
50
3.58
100
3.64
150
3.7
200
3.76
250
3.82
300
V0 = 3.3V
Cbyp = 10nF
IL=100mA
VO
IL
dI/dt = 1 A/μ
Figure 8-4. Load Transient Response for New Chip
3.22
3.24
3.26
3.28
3.3
3.32
3.34
3.36
3.38
3.4
−250
−200
−150
−100
−50
0
50
100
150
200
VO = 3.3 V
Cbyp = 10 nF
DIL = 150 mA
IL
VO
20 ms/div→
Figure 8-5. Load Transient Response for Legacy
Chip
20
s/div
0
20
40
60
80
100
120
140 150
3.1
-300
3.16
-250
3.22
-200
3.28
-150
3.34
-100
3.4
-50
3.46
0
3.52
50
3.58
100
3.64
150
3.7
200
3.76
250
3.82
300
VO = 3.3V
Cbyp =10 nF
IL=150mA
VO
IL
dI/dt = 1 A/μ
Figure 8-6. Load Transient for New Chip
3.22
3.24
3.26
3.28
3.3
3.32
3.34
3.36
3.38
3.4
−250
−200
−150
−100
−50
0
50
100
150
200
IL
VO
VO = 3.3 V
Cbyp = 0 nF
DIL = 150 mA
20 ms/div→
Figure 8-7. Load Transient Response for Legacy
Chip
20
s/div
0
20
40
60
80
100
120
140 150
3.1
-300
3.16
-250
3.22
-200
3.28
-150
3.34
-100
3.4
-50
3.46
0
3.52
50
3.58
100
3.64
150
3.7
200
3.76
250
3.82
300
V0 = 3.3V
Cbyp = 0 nF
IL = 150 mA
VO
IL
dI/dt = 1 A/μ
Figure 8-8. Load Transient Response for New Chip
LP2985
SLVS522Q – JULY 2004 – REVISED DECEMBER 2022
www.ti.com
24
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Product Folder Links: LP2985



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