LDO 5-Pin Adjustable Linear Regulator
Description
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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 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 http://onsemi.
com
1 5 D2PAK−5 DP SUFFIX CASE 936AC
Tab = VOUT Pin 1.
VSENSE 2.
Adjust 3.
VOUT 4.
VCONTROL 5.
VPOWER
MARKING DIAGRAM
CS 5253−1 AWLYWWG 1
• • • • • • • • • • • • •
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 Drop−In Replacement for EZ1582 Backwards Com...
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