CS5253B-1 Datasheet, PDF (1/10 Pages) ON Semiconductor – 3.0 A LDO 5-Pin Adjustable Linear Regulator with Remote Sense Applications

CS5253B−1
3.0 A LDO 5−Pin Adjustable
Linear Regulator with
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−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 CS5253B−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 overtemperature protection will
self protect the regulator under all fault conditions.
The CS5253B−1 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−1 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*
• 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
*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
1
June, 2004 − Rev. 5
http://onsemi.com
1
5
D²PAK−5
DP SUFFIX
CASE 936AC
Tab = V_OUT
Pin 1. V_SENSE
2. Adjust
3. V_OUT
4. V_CONTROL
5. V_POWER
MARKING DIAGRAM
CS
5253B−1
AWLYWW
1
A
= Assembly Location
WL = Wafer Lot
Y
= Year
WW = Work Week
ORDERING INFORMATION
Device
Package Shipping^†
CS5253B−1GDP5
D²PAK−5 50 Units/Rail
CS5253B−1GDPR5 D²PAK−5 750 Tape & Reel
CS5253B−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.
Publication Order Number:
CS5253B−1/D