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.