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CS5231-3 - 3.3V Linear Regulator

Datasheet Summary

Description

The CS5231-3 combines a threeterminal linear regulator with circuitry to control an external PFET transistor with the intent of managing two input supplies.

A 5V supply powers the regulator while an auxiliary 3.3V supply is controlled by the IC.

Features

  • Linear Regulator s 3.3V ± 2% Output Voltage s 3mA Quiescent Current @ 500mA s Fast Transient Response s Current Limit s Thermal Shutdown with Hysteresis s 450µA Reverse Output Current s Fast Transient Response System Power Management s Auxiliary Supply Control Package Options 5 Lead D2PAK VOUT Block Diagram VIN 10kΩ 50kΩ Internal Bias Current Limit.
  • AuxDrv VIN UV Comparator Bandgap Reference Gnd Thermal Shutdown + Error Amp Shutdown.
  • + 1 1. No Connect 2. VIN 3. Gnd.

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Datasheet Details

Part number CS5231-3
Manufacturer Cherry Semiconductor Corporation
File Size 280.86 KB
Description 3.3V Linear Regulator
Datasheet download datasheet CS5231-3 Datasheet
Additional preview pages of the CS5231-3 datasheet.

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Full PDF Text Transcription

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CS5231-3 CS5231-3 500mA, 3.3V Linear Regulator with Auxiliary Control Description The CS5231-3 combines a threeterminal linear regulator with circuitry to control an external PFET transistor with the intent of managing two input supplies. A 5V supply powers the regulator while an auxiliary 3.3V supply is controlled by the IC. The design has been optimized to provide a “glitch-free” transition between the two supplies. The CS5231-3 linear regulator provides a fixed 3.3V output @ 500mA with an overall accuracy of ± 2%. The NPN-PNP composite pass transistor provides a low dropout voltage and requires less supply current than PNP designs. Full protection including current limit and thermal shutdown is provided.
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