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  ON Semiconductor Electronic Components Datasheet  

CS5253-1 Datasheet

LDO 5-Pin Adjustable Linear Regulator

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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 CS52531 is offered in a fiveterminal D2PAK5 package,
which allows for the implementation of a remotesense 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 CS52531 has a very fast transient loop response which can be
adjusted using a small capacitor on the Adjust pin.
Internal protection circuitry provides for “bustproof” operation,
similar to threeterminal regulators. This circuitry, which includes
overcurrent, short circuit, and overtemperature protection will self
protect the regulator under all fault conditions.
The CS52531 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
DropIn Replacement for EZ1582
Backwards Compatible with 3Pin Regulators
Very Low Dropout Reduces Total Power Consumption
PbFree Package is Available*
http://onsemi.com
1 Tab = VOUT
5
D2PAK5
DP SUFFIX
CASE 936AC
Pin 1. VSENSE
2. Adjust
3. VOUT
4. VCONTROL
5. VPOWER
MARKING DIAGRAM
CS
52531
AWLYWWG
1
CS52531
A
WL
Y
WW
G
= Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
ORDERING INFORMATION
Device
Package
Shipping
CS52531GDP5
D2PAK5 50 Units/Rail
CS52531GDPR5 D2PAK5 750/Tape & Reel
CS52531GDPR5G D2PAK5 750/Tape & Reel
(PbFree)
†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 PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
September, 2006Rev. 11
1
Publication Order Number:
CS52531/D


  ON Semiconductor Electronic Components Datasheet  

CS5253-1 Datasheet

LDO 5-Pin Adjustable Linear Regulator

No Preview Available !

5.0 V
3.3 V
10 mF
10 V
CS52531
VCONTROL
VOUT
CS52531
VPOWER
VSENSE
Adjust
100 mF
5.0 V
124
1.0%
124
1.0%
Load
2.5 V @ 3.0 A
300 mF
5.0 V
Figure 1. Application Diagram
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
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. 60 second maximum above 183°C.
ELECTRICAL CHARACTERISTICS (0°C TA 70°C; 0°C TJ 150°C; VSENSE = VOUT and VADJ = 0 V; unless otherwise specified.)
Characteristic
Test Conditions
Min Typ Max Unit
CS52531
Reference Voltage
VCONTROL = 2.75 V to 12 V, VPOWER = 2.05 V to 5.5 V, 1.237 1.250 1.263
IOUT = 10 mA to 3.0 A
(1.0%)
(+1.0%)
V
Line Regulation
VCONTROL
=
2.5
V
to 12 V,
IOUT =
V10POmWAER
=
1.75
V
to
5.5
V,
0.02 0.2 %
Load Regulation
VCONTROL = 2.75 V, VPOWER = 2.05 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%
5.0 10 mA
Control Pin Current (Note 3)
VCONTROL = 2.75 V, VPOWER = 2.05 V, IOUT = 100 mA 6.0 10 mA
VCONTROL = 2.75 V, VPOWER = 2.05 V, IOUT = 3.0 A
35 120 mA
Adjust Pin Current
VCONTROL = 2.75 V, VPOWER = 2.05 V, IOUT = 10 mA 60 120 mA
Current Limit
VCONTROL = 2.75 V, VPOWER = 2.05 V, DVOUT = 1.0%
3.1
4.0
A
Short Circuit Current
VCONTROL = 2.75 V, VPOWER = 2.05 V, VOUT = 0 V 2.0 3.5 A
2. The minimum load current is the minimum current required to maintain regulation. Normally the current in the resistor divider used to set
the output voltage is selected to meet the minimum load current requirement.
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.
http://onsemi.com
2


Part Number CS5253-1
Description LDO 5-Pin Adjustable Linear Regulator
Maker ON Semiconductor
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CS5253-1 Datasheet PDF






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