CS5231-3 Datasheet

CS5231-3 3.3V Linear Regulator

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-fre.

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 4. VOUT 5. AuxDrv Tab = Gnd VREF Consult factory for other package options. Cherry Semiconductor Corporation 2000.