AP7353D-285CV4-7

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The AP7353D-285CV4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 2.85V with an accuracy of ±1%. The device supports a maximum output current of 250mA and operates within an input voltage range of 2.0V to 5.5V. Key electrical characteristics include a typical quiescent current of 18µA, a ripple rejection ratio of 90dB at 1kHz, and an output noise of 10µVrms from 10Hz to 100kHz. It features integrated short-circuit protection, thermal shutdown, and an auto-discharge function upon disable.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated N-channel MOSFET for automatic output discharge when the enable pin is low
• High power supply ripple rejection ratio ensuring stable operation in noisy environments
• Low output noise suitable for sensitive RF and analog circuit applications
• Built-in current limit and thermal shutdown for enhanced system reliability

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• RF power supplies
• Smartphones and tablets
• Cameras and portable video devices
• Wireless communication equipment

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify that the specific suffix 'D' corresponds to the required output discharge functionality, as standard versions lack this feature. Confirm the package type matches the design footprint requirements. Ensure compliance with RoHS 3 and REACH directives if applicable to the target market. Validate component authenticity through authorized distribution channels.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this variant specifically when post-shutdown voltage decay is required to prevent battery drain or residual charge issues. Compare dropout voltage specifications against the minimum expected input voltage under load conditions. Consider the thermal resistance of the X1-WLB0707-4 package for adequate heat dissipation in dense PCB layouts.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the AP7353 series of high PSRR low noise LDOs. The 'D' suffix indicates the inclusion of an internal auto-discharge resistor connected to the output pin. This distinguishes it from non-discharge variants which retain output voltage after the enable signal is removed.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

AP7353-285CV4-7 (Non-discharge version)

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the function of the 'D' suffix in the part number?

The 'D' suffix indicates that the regulator includes an internal N-channel MOSFET for automatic output discharge when the enable pin is pulled low.

How does the device handle short-circuit conditions?

The regulator incorporates short-circuit protection that clamps the output current to approximately 350mA to protect the device from damage.