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PDF CS5253-1 Data sheet ( Hoja de datos )
| Número de pieza | CS5253-1 | |
| Descripción | LDO 5-Pin Adjustable Linear Regulator | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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CS5253−1
3.0 A LDO 5−Pin Adjustable
Linear Regulator
This new very low dropout linear regulator reduces total power
dissipation in the application. To achieve very low dropout, the
internal pass transistor is powered separately from the control
circuitry. Furthermore, with the control and power inputs tied together,
this device can be used in single supply configuration and still offer a
better dropout voltage than conventional PNP − NPN based LDO
regulators. In this mode the dropout is determined by the minimum
control voltage.
The CS5253−1 is offered in a five−terminal D2PAK−5 package,
which allows for the implementation of a remote−sense pin permitting
very accurate regulation of output voltage directly at the load, where it
counts, rather than at the regulator. This remote sensing feature
virtually eliminates output voltage variations due to load changes and
resistive voltage drops. Typical load regulation measured at the sense
pin is less than 1.0 mV for an output voltage of 2.5 V with a load step
of 10 mA to 3.0 A.
The CS5253−1 has a very fast transient loop response which can be
adjusted using a small capacitor on the Adjust pin.
Internal protection circuitry provides for “bust−proof” operation,
similar to three−terminal regulators. This circuitry, which includes
overcurrent, short circuit, and over−temperature protection will self
protect the regulator under all fault conditions.
The CS5253−1 is ideal for generating a 2.5 V supply to power
graphics controllers used on VGA cards.
Features
• VOUT Range Is 1.25 V to 5.0 V @ 3.0 A
• VPOWER Dropout < 0.40 V @ 3.0 A
• VCONTROL Dropout < 1.05 V @ 3.0 A
• 1.0% Trimmed Reference
• Fast Transient Response
• Remote Voltage Sensing
• Thermal Shutdown
• Current Limit
• Short Circuit Protection
• Drop−In Replacement for EZ1582
• Backwards Compatible with 3−Pin Regulators
• Very Low Dropout Reduces Total Power Consumption
• Pb−Free Package is Available*
http://onsemi.com
1 Tab = VOUT
5
D2PAK−5
DP SUFFIX
CASE 936AC
Pin 1. VSENSE
2. Adjust
3. VOUT
4. VCONTROL
5. VPOWER
MARKING DIAGRAM
CS
5253−1
AWLYWWG
1
CS5253−1
A
WL
Y
WW
G
= Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
ORDERING INFORMATION
Device
Package
Shipping†
CS5253−1GDP5
D2PAK−5 50 Units/Rail
CS5253−1GDPR5 D2PAK−5 750/Tape & Reel
CS5253−1GDPR5G D2PAK−5 750/Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
September, 2006− Rev. 11
1
Publication Order Number:
CS5253−1/D
1 page  
CS5253−1
85
80
75
70
65
60 0 20
40 60 80 100 120 140
Junction Temperature (°C)
Figure 7. Adjust Pin Current vs Junction Temperature
1200
1150
1100
VPOWER = 3.3 V
DVOUT = +1.0%
1050
1000
950
900
850
8001.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 11
VCONTROL − VOUT (V)
Figure 8. Minimum Load Current vs VCONTROL − VOUT
3.9
VCONTROL = 2.75 V
3.8 VPOWER = 2.05 V
3.7
3.6
3.5
3.4
3.3 0 20 40 60 80 100 120 140
Junction Temperature (°C)
Figure 9. Short Circuit Output Current vs Junction
Temperature
90
80
70
60
50
40 VIN − VOUT = 2.0 V
30
IOUT = 4.0 A
VRIPPLE = 1.0 VP−P
20
COUT = 22 mF
CADJ = 0.1 mF
10101 102 103
104
Frequency (Hz)
105
Figure 10. Ripple Rejection vs Frequency
106
12
VCONTROL = 13 V
10 VOUT = 0 V
VPOWER Not Connected
8
1100
VPOWER = 2.05 V
1000
TJ = 0°C
6
TJ = 20°C
4 900
TJ = 120°C
2
0 0 20 40 60 80 100 120 140
Junction Temperature (°C)
Figure 11. VCONTROL Only Output Current vs Junction
Temperature
800 0
0.5 1.0 1.5 2.0 2.5 3.0
Output Current (A)
Figure 12. VCONTROL Dropout Voltage vs Output
Current
http://onsemi.com
5
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| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet CS5253-1.PDF ] | |
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