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  ON Semiconductor Electronic Components Datasheet  

CS5253B-8 Datasheet

LDO 5-Pin Adjustable Linear Regulator

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CS5253B-8 pdf
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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


  ON Semiconductor Electronic Components Datasheet  

CS5253B-8 Datasheet

LDO 5-Pin Adjustable Linear Regulator

No Preview Available !

CS5253B-8 pdf
CS5253B−8
+5.0 V
10 mF
10 V
+3.3 V
100 mF
5.0 V
VCONTROL
VOUT
VSENSE
CS5253B−8
VPOWER
GND
RDIS
2.5 V @ 3.0 A
33 mF
5.0 V
CLOAD
(Optional)
GND
RDIS
Figure 1. Application Diagram
GND
MAXIMUM RATINGS
Rating
Value
Unit
VPOWER Input Voltage
VCONTROL Input Voltage
Operating Junction Temperature Range, TJ
Storage Temperature Range
6.0
13
0 to 150
−65 to +150
V
V
°C
°C
ESD Damage Threshold
2.0 kV
Lead Temperature Soldering:
Reflow: (SMD styles only) (Note 1) 230 Peak
°C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. 60 second maximum above 183°C.
ELECTRICAL CHARACTERISTICS (0°C TA 70°C; 0°C TJ 150°C; VSENSE = VOUT and GND = 0 V; unless
otherwise specified.)
Characteristic
Test Conditions
Min Typ Max Unit
Output Voltage
VCONTROL = 3.9 V to 12 V, VPOWER = 3.13 V to 5.5 V, 2.463 2.5 2.538
IOUT = 10 mA to 3.0 A
(−1.5%)
(+1.5%)
V
Line Regulation
VCONTROL = 3.9 V to 12 V, VPOWER = 3.13 V to 5.5 V, − 0.02 0.2 %
IOUT = 10 mA
Load Regulation
VCONTROL = 3.9 V, VPOWER = 3.13 V,
IOUT = 10 mA to 3.0 A, with Remote Sense
− 0.04 0.3 %
Minimum Load Current (Note 2)
VCONTROL = 5.0 V, VPOWER = 3.3 V, DVOUT = +1.0%
0
0 mA
Control Pin Current (Note 3)
VCONTROL = 3.9 V, VPOWER = 3.13 V, IOUT = 100 mA − 6.0 10 mA
VCONTROL = 3.9 V, VPOWER = 3.13 V, IOUT = 3.0 A
− 35 120 mA
Ground Pin Current
VCONTROL = 3.9 V, VPOWER = 3.13 V, IOUT = 10 mA
− 7 10 mA
Current Limit
VCONTROL = 3.9 V, VPOWER = 3.13 V, DVOUT = −4.0%
3.1
4.0
A
Short Circuit Current
VCONTROL = 3.9 V, VPOWER = 3.13 V, VOUT = 0 V
2.0 3.5
A
Ripple Rejection (Note 4)
VCONTROL = VPOWER = 3.9 V, VRIPPLE = 1.0 VP−P @ 60 80 − dB
120 Hz, IOUT = 3.0 A
Thermal Regulation
30 ms Pulse, TA = 25°C
− 0.002 − %/W
2. The minimum load current is the minimum current required to maintain regulation.
3. The VCONTROL pin current is the drive current required for the output transistor. This current will track output current with roughly a 1:100
ratio. The minimum value is equal to the quiescent current of the device.
4. This parameter is guaranteed by design and is not 100% production tested.
http://onsemi.com
2


Part Number CS5253B-8
Description LDO 5-Pin Adjustable Linear Regulator
Maker ON Semiconductor
Total Page 8 Pages
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