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CS5231-3 Fiches technique(PDF) 11 Page - ON Semiconductor

No de pièce CS5231-3
Description  500 mA, 3.3 V Linear Regulator with Auxiliary Control
Download  14 Pages
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Fabricant  ONSEMI [ON Semiconductor]
Site Internet  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS5231-3 Fiches technique(HTML) 11 Page - ON Semiconductor

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CS5231−3
http://onsemi.com
11
PC Board Layout Artwork
The PC Board is a single layer copper design. The layout
artwork is reproduced at actual size below.
Figure 23. Top Copper Layer
Figure 24. Top Silk Screen Layer
2”
1.8”
2”
1.8”
VIN 5.0 V
GND
GND
VOUT 3.3 V
AUX 3.3 V
AUX.DRV
Test Description
The startup and supply transition waveforms shown in
Figures 13 through 19 were obtained using the application
circuit board with a resistive load of 8.8
W. This provides a
DC load of 375 mA when the regulated output voltage is 3.3
V. A standard 2.0 A bench supply was used to provide power
to the application circuit. The transient response waveforms
shown in the Typical Performance Characteristics section
were obtained by switching a 6.3
W resistor across the
output.
Temperature Performance
The graph below shows thermal performance for the
CS5231−3 across the normal operating output current range.
Figure 25. Package Temperature vs. Load
Current (VIN = 5.0 V, TA = 235C)
Load Current (mA)
55
0
50
45
50
40
35
30
25
20
100 150 200 250 300 350 400 450 500
PFET RDS(ON) Performance
The graph provided below show typical RDS(ON)
performance for the PFET. The data is provided as VDS vs
IOUT for different values of VAUX.
Figure 26. PFET VDS vs. IOUT
IOUT (mA)
140
0
100
100
120
80
60
40
20
0
200
300
400
500
160
VAUX = 3.135 V
VAUX = 3.300 V
VAUX = 3.465 V
APPLICATIONS CIRCUIT BILL OF MATERIALS
Ref des
Description
Part Number
Manufacturer
Contact Information
C1, C2
33
mF, 16 V tantalum capacitors
TAJD336K016
AVX Corp
www.avxcorp.com
1−843−448−9411
Q1
p−channel FET transistor
MGSF1P02ELT1
ON Semiconductor
http://onsemi.com
U1
Linear regulator with auxiliary
CS5231−3DPS
ON Semiconductor
http://onsemi.com
T1−T6
Turret pins
40F6023
Newark Electronics
www.newark.com
1−800−463−9275


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