AP7353-25CV4-7

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

The AP7353-25CV4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 2.5V with a maximum guaranteed load current of 250mA. It operates within an input voltage range of 2.0V to 5.5V and features a quiescent current of 18µA typical. The device incorporates high power supply rejection ratio (PSRR) performance, achieving 90dB at 1kHz, and maintains low output noise of 10µVrms across the 10Hz to 100kHz bandwidth. Packaged in the X1-WLB0707-4 form factor, it includes integrated thermal shutdown and current limit protection mechanisms.

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

• Integrates an enable pin for precise power management control, allowing the regulator to be turned on or off via logic level signals.
• Features built-in short-circuit protection that clamps output current during fault conditions to prevent device damage.
• Includes thermal shutdown circuitry to protect the component from overheating under excessive power dissipation scenarios.

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

• RF power supply circuits
• Smartphones and tablet devices
• Portable video equipment
• Wireless communication modules

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

Verify the specific package type and marking code against the datasheet before procurement. Confirm the ordering suffix matches the required tape and reel quantity. Ensure the selected variant aligns with the intended application's voltage accuracy and discharge requirements.

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

Select this component when a stable 2.5V rail is required for sensitive analog or RF loads. Consider the X1-WLB0707-4 package for space-constrained designs requiring dense PCB layouts. Evaluate the need for the non-discharge feature versus the D-series variants if output capacitor discharge is necessary upon shutdown.

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

This part belongs to the AP7353 family of CMOS low dropout regulators designed for handheld and wearable electronics. The series offers various fixed output voltages ranging from 1.8V to 4.7V. The CV4 suffix specifically denotes the X1-WLB0707-4 package configuration used in this model.

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

AP7353D-25CV4-7 provides identical electrical characteristics but includes an internal auto-discharge resistor on the output pin when disabled.

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

What is the function of the EN pin?

The EN pin controls the operation state of the regulator. Driving it high enables the output, while pulling it low activates the shutdown mode.

How does the AP7353-25CV4-7 handle short circuits?

It utilizes a current-limit circuit that clamps the output current to approximately 350mA during a short-circuit event to protect the device.