AP7353D-18CV4-7

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

The AP7353D-18CV4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 1.8V output with a maximum current capacity of 250mA. It operates within an input voltage range of 2.0V to 5.5V and features a typical quiescent current of 18µA. 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 format, it includes integrated thermal shutdown and short-circuit protection mechanisms.

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

• Integrated enable pin for precise power management control
• Built-in auto-discharge circuitry for rapid output voltage decay upon shutdown
• High ripple rejection capability suitable for sensitive RF applications
• Low output noise characteristics ensuring clean power delivery

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

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

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

Verify that the specific part number suffix matches the required package type and discharge functionality. Confirm compliance with RoHS 3 and REACH directives as specified in the manufacturer documentation. Ensure ordering quantities align with standard tape and reel packaging requirements provided by the supplier.

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

Select this component when a low quiescent current and high PSRR are critical for battery-operated systems. The integrated discharge feature distinguishes it from non-discharge variants, making it suitable for applications requiring fast power-down times. Verify that the 1.8V fixed output aligns with the target load requirements.

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

This component belongs to the AP7353 series of low dropout regulators designed for handheld and wearable electronics. The 'D' suffix indicates the inclusion of an internal output discharge resistor, differentiating it from the standard AP7353 variant which lacks this feature. It utilizes a CMOS process technology to achieve low power consumption.

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

AP7353-18CV4-7

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

What is the function of the 'D' suffix in the AP7353D-18CV4-7 designation?

The 'D' suffix indicates that the device includes an integrated auto-discharge resistor connected between the output and ground, allowing the output voltage to decay rapidly when the enable pin is pulled low.

How does the AP7353D-18CV4-7 handle short-circuit conditions?

The regulator features built-in short-circuit protection that clamps the output current to approximately 350mA when the output pin is shorted to ground, protecting the device from overheating damage.