CS5253-1 Datasheet, PDF (1/10 Pages) Cherry Semiconductor Corporation – 3A LDO 5-Pin Adjustable Linear Regulator

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
• V_OUT Range Is 1.25 V to 5.0 V @ 3.0 A
• V_POWER Dropout < 0.40 V @ 3.0 A
• V_CONTROL 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 = V_OUT
5
D²PAK−5
Pin 1. V_SENSE
DP SUFFIX
2. Adjust
CASE 936AC
3. V_OUT
4. V_CONTROL
5. V_POWER
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
1
September, 2006− Rev. 11
Publication Order Number:
CS5253−1/D