General Description

The APL5940 is a 4A ultra low dropout linear regulator. The IC needs two supply voltages, one is a control voltage (VCNTL) for the control circuitry, the other is a main supply voltage (VIN) for power conversion, to reduce power dissipation and provide extremely low dropout voltage.

Features

• Compatible with APL5913

• Ultra Low Dropout

- 0.30V(typical) at 4A Output Current

• Low ESR Output Capacitor (Multi-Layer Chip Ca pacitors (MLCC)) Applicable

• 0.8V Reference Voltage

• High Output Accuracy

- ±1.5 over Line, Load, and Temperature Range

• Fast Transient Response

• Adjustable Output Voltage

• Power-On-Reset Monitoring on Both VCNTL and VIN Pins

• Inernal Soft-Start

• Current-Limit and Short Current-Limit Protections

• Thermal Shutdown with Hysteresis

• Open-Drain VOUT Voltage Indicator (POK)

• Low Shutdown Quiescent Current (<30 mA)

• Shutdown/Enable Control Function

• Simple SOP-8P Package with Exposed Pad

• Lead Free and Green Devices Available (RoHS Compliant)

Applications

• Front Side Bus VTT

• NoteBook PC Applications

• Motherboard Applications