AP7315D-285FS4-7B

Overview

The AP7315D-285FS4-7B is a low dropout regulator manufactured by Diodes Incorporated, featuring an integrated resistor network for fixed output voltage. It operates within an input voltage range of 1.7V to 5.25V and guarantees an output current of 150mA. The device provides a fixed output voltage of 2.85V with ±1% accuracy. Key electrical characteristics include a ripple rejection of 75dB at 1kHz, low output noise of 60µVrms from 10Hz to 100kHz, and a quiescent current as low as 35µA. It utilizes a CMOS process and includes an enable input.

Feature Summary

• Includes an internal discharge feature that activates when the enable pin is pulled low, ensuring rapid output voltage decay in shutdown mode.
• Features high power supply ripple rejection and low output noise, making it suitable for noise-sensitive applications such as RF subsystems.
• Incorporates an enable control pin to manage power states, allowing the regulator to be turned on or off via logic level signals.

Applications

• Smart Phone/PAD
• RF Supply
• Cameras
• Portable Videos
• Wireless Communication

Procurement Notes

Verify the specific ordering suffix FS4 corresponds to the X2-DFN1010-4 package configuration required for your PCB layout. Confirm the 'D' designation indicates the presence of the built-in auto-discharge function, which differs from standard non-discharge variants. Ensure compatibility with the specified 10000-unit tape and reel packaging quantity before finalizing procurement orders.

Selection Notes

Select this component when a precise 2.85V fixed output is required alongside strict noise performance constraints. The inclusion of the discharge feature makes it appropriate for systems requiring fast power-down sequences. Verify that the input voltage remains within the 1.7V to 5.25V range and that the load does not exceed the guaranteed 150mA output current limit during operation.

Part Context

This part belongs to the AP7315 series of low dropout regulators designed for low power handheld communication equipment. The series offers various fixed output voltages ranging from 1.1V to 3.3V across multiple package options including SOT23, SOT25, and X2-DFN1010-4. The D variant specifically denotes the addition of an output discharge mechanism compared to the base AP7315 model.

Replacement Considerations

AP7315-285FS4-7B