The APL5320-28QFI-TRG is a dual, low-dropout (LDO) linear regulator from Anpec Electronics, designed to provide two independent, stable voltage outputs. This device is suitable for applications requiring multiple voltage rails, such as powering different sections of a portable device or providing separate power supplies for analog and digital circuits. Its low dropout voltage allows it to operate efficiently even with small input-output voltage differentials, making it ideal for battery-powered systems.

Applications:

• Smartphones and Tablets: Powering different ICs like the application processor, display driver, and audio amplifier.
• Portable Media Players: Providing regulated voltage for the display, audio codec, and memory components.
• Digital Cameras: Supplying power to the image sensor, processor, and LCD screen.
• Wireless Modules: Powering Bluetooth, Wi-Fi, and other RF communication circuits.
• Wearable Devices: Regulating voltage for sensors, microcontrollers, and display units.

Features:

• Dual LDO Regulators: Offers two independent voltage regulators in a single package.
• Low Dropout Voltage: Ensures efficient regulation even with low input voltages.
• High Output Accuracy: Provides stable and precise output voltage for reliable operation.
• Low Quiescent Current: Minimizes power consumption in standby mode, extending battery life.
• Independent Enable Control: Allows each regulator to be turned on or off separately.
• Over-Current Protection: Protects the regulator and load from damage due to excessive current draw.
• Over-Temperature Protection: Prevents thermal damage to the regulator in high-temperature environments.
• Small Package Size: Available in a compact QFN package for space-constrained applications.

Benefits:

• Reduced Component Count: Integrates two regulators into one package, saving board space and reducing BOM costs.
• Extended Battery Life: Low quiescent current and efficient regulation minimize power consumption.
• Improved System Reliability: Stable and accurate output voltages ensure reliable operation of downstream circuits.
• Flexibility in Design: Independent enable control allows for flexible power management schemes.
• Protection Against Damage: Over-current and over-temperature protection features enhance system robustness.

Additional Details:

The APL5320-28QFI-TRG typically offers a fixed output voltage of 2.8V for one or both of its LDOs, but other voltage options may be available in the APL5320 series. It is designed to operate with input voltages in the range of 2.5V to 5.5V. The device's over-temperature protection feature shuts down the regulator when the junction temperature exceeds a certain threshold, preventing thermal damage. Furthermore, the integrated over-current protection limits the output current to a safe level, protecting both the regulator and the connected load. The APL5320 family comes in a space-saving QFN package, making it ideal for portable and compact electronic devices.