CS5253B-8 Datasheet PDF - ON Semiconductor
| Part Number | CS5253B-8 | |
| Description | LDO 5-Pin Adjustable Linear Regulator | |
| Manufacturers | ON Semiconductor | |
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CS5253B−8
3.0 A LDO 5−Pin 2.5 V Fixed
Linear Regulator for
Remote Sense Applications
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 CS5253B−8 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 CS5253B−8 has a very fast transient loop response.
Internal protection circuitry provides for “bust−proof” operation,
similar to three−terminal regulators. This circuitry, which includes
overcurrent, short circuit, and overtemperature protection will self
protect the regulator under all fault conditions.
The CS5253B−8 is ideal for generating a 2.5 V supply to power
graphics controllers used on VGA cards. Its remote sense and low
value capacitance requirements make this a low cost high performance
solution. The CS5253B−8 is optimized from the CS5253−1 to allow a
lower value of output capacitor to be used at the expense of a slower
transient response.
Features
• Pb−Free Package is Available*
• VOUT Fixed @ 2.5 V ± 1.5%
• VPOWER Dropout < 0.40 V @ 3.0 A
• VCONTROL Dropout < 1.05 V @ 3.0 A
• 1.5% 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
*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, 2004
June, 2004 − Rev. 5
1
http://onsemi.com
1
5
D2PAK−5
DP SUFFIX
CASE 936AC
Tab = VOUT
Pin 1. VSENSE
2. GND
3. VOUT
4. VCONTROL
5. VPOWER
MARKING DIAGRAM
CS
5253B−8
AWLYWW
1
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
ORDERING INFORMATION
Device
Package Shipping†
CS5253B−8GDP5
D2PAK−5 50 Units/Rail
CS5253B−8GDPR5 D2PAK−5 750 Tape & Reel
CS5253B−8GDPR5G 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.
Publication Order Number:
CS5253B−8/D
|
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CS5253B−8
500
450
400
350 TJ = 120°C
300
250 TJ = 0°C
200
TJ = 20°C
150
100
50
0
0 0.5 1.0 1.5 2.0 2.5 3.0
Output Current (A)
Figure 9. VPOWER Dropout Voltage vs Output Current
30
VPOWER = 6.0 V
25 VOUT = 0 V
VCONTROL Not Connected
20
15
10
5
0
0 20 40 60 80 100 120 140
Junction Temperature (°C)
Figure 10. VPOWER Only Output Current vs Junction
Temperature
90 5.0
VPOWER = 3.3 V
80 VCONTROL = 5.0 V
VOUT = 2.5 V
70 TA = 25°C
60 4.5
50
40 VIN − VOUT = 2.0 V
IOUT = 3.0 A
30 VRIPPLE = 1.0 VP−P
20
COUT = 22 mF
CADJ = 0.1 mF
10
101 102 103
104
Frequency (Hz)
105
4.0
106
3.5
0
0.5
1.0 1.5 2.0 2.5
VOUT (V)
Figure 11. Ripple Rejection vs Frequency
Figure 12. Current Limit vs VOUT
3.0
1100
VPOWER = 2.05 V
1000
TJ = 0°C
TJ = 20°C
900
TJ = 120°C
800
0 0.5 1.0 1.5 2.0 2.5 3.0
Output Current (A)
Figure 13. VCONTROL Dropout Voltage vs Output
Current
40
VCONTROL = 3.9 V
35 VPOWER = 3.13 V
30 IOUT = 3.0 A
25
20
15
IOUT = 1.0 A
10
5 IOUT = 100 mA
0
0 20 40 60 80 100 120 140
Junction Temperature (°C)
Figure 14. VCONTROL Supply Current vs Junction
Temperature
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| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ CS5253B-8.PDF Datasheet ] | |
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