AP7353D-30CV4-7

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

The AP7353D-30CV4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.0 V with an accuracy of ±1%. The device supports a maximum output current of 250 mA and operates within an input voltage range of 2.0 V to 5.5 V. Key electrical characteristics include a typical quiescent current of 18 µA, a ripple rejection ratio of 90 dB at 1 kHz, and an output noise voltage of 10 µVrms from 10 Hz to 100 kHz. The component is housed in an X1-WLB0707-4 package.

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

• Integrated enable pin for power control and shutdown management
• Built-in auto-discharge circuit to rapidly reduce output voltage upon disable
• High power supply ripple rejection ratio for stable operation in noisy environments
• Low output noise suitable for sensitive RF and analog circuits

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

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

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

Verify the specific ordering suffix 'D' confirms the inclusion of the internal discharge resistor network. Confirm the 'CV4' designation matches the required X1-WLB0707-4 package type. Ensure the '30' code corresponds to the 3.0 V fixed output requirement. Validate that the -7 suffix indicates tape and reel packaging quantities consistent with production needs.

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

Select this variant when a fixed 3.0 V rail is required alongside active output discharge capabilities. The CV4 package offers a compact footprint compared to standard DFN options. Consider the 18 µA quiescent current for battery-powered designs. Verify that the 250 mA load capability meets the peak demand of the target application without exceeding thermal limits.

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 series emphasizes high performance metrics such as low noise and high PSRR. The 'D' suffix specifically differentiates this part from non-discharge variants by adding an internal mechanism to pull down the output voltage when the device is disabled.

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

AP7353-30CV4-7 (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 integrated N-channel auto-discharge resistor connected between the output and ground, which rapidly pulls down the output voltage when the enable pin is low.

How does the enable pin operate?

Driving the EN pin high enables the regulator, while pulling it low activates the shutdown mode and engages the internal discharge resistor to discharge the output capacitor.