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APL5934
Active
3A, Ultra Low Dropout (0.23V Typical) Linear Regulator
Features
General Description
The APL5934 is a 3A 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. The APL5934/B integrates many functions. A Power-OnReset (POR) circuit monitors both supply voltages on VCNTL and VIN pins to prevent erroneous operations. The functions of thermal shutdown and current-limit protect the device against thermal and current over-loads. A POK indicates the output voltage status with a delay time set internally. It can control other converter for power sequence. The APL5934/B can be enabled by other power systems. Pulling and holding the EN/ENB voltage below 0.4V shut/enable off the output. The APL5934 is available in a SOP-8P package which features small size as SOP-8 and an Exposed Pad to reduce the junction-to-case resistance to extend power range of applications.
Features
- Ultra Low Dropout
- Low ESR Output Capacitor (Multi-layer Chip Capacitors (MLCC)) Applicable
- 0.8V Reference Voltage
- High Output Accuracy
- Fast Transient Response
- Adjustable Output Voltage
- Power-On-Reset Monitoring on Both VCNTL and VIN Pins
- Internal Soft-Start
- Current-Limit and Short Current-Limit Protections
- Thermal Shutdown with Hysteresis
- Open-Drain VOUT Voltage Indicator (POK)
- Low Shutdown Quiescent Current
- Shutdown/Enable Control Function
- Simple SOP-8P and TDFN3x3-10 Packages with Exposed Pad
- Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APL5934 is a 3A 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. The APL5934/B integrates many functions. A Power-OnReset (POR) circuit monitors both supply voltages on VCNTL and VIN pins to prevent erroneous operations. The functions of thermal shutdown and current-limit protect the device against thermal and current over-loads. A POK indicates the output voltage status with a delay time set internally. It can control other converter for power sequence. The APL5934/B can be enabled by other power systems. Pulling and holding the EN/ENB voltage below 0.4V shut/enable off the output. The APL5934 is available in a SOP-8P package which features small size as SOP-8 and an Exposed Pad to reduce the junction-to-case resistance to extend power range of applications.
