AP7353-33CV4-7

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

The AP7353-33CV4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.3V 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 voltage of 10µVrms from 10Hz to 100kHz. 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
• High power supply ripple rejection
• Low output noise performance
• Built-in short-circuit protection

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 suffix CV4 corresponds to the X1-WLB0707-4 package type before ordering. Confirm that the non-discharge variant matches system requirements, as discharge versions exist under different part numbers. Ensure compatibility with RoHS 3 standards if required by the target market regulations.

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

Select this component when a stable 3.3V rail is needed for sensitive analog or RF circuits requiring high PSRR. The low quiescent current makes it suitable for battery-powered portable devices. Verify that the input voltage remains above the minimum threshold while accounting for load transients and dropout voltage variations across the operating temperature range.

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

This device belongs to the AP7353 series of low dropout regulators designed for handheld and wearable applications. It utilizes a CMOS process to achieve low power consumption alongside high performance. The series offers various fixed output voltages and packages, including the X2-DFN1010-4 option for different footprint constraints.

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

AP7353D-33CV4-7 (Includes output discharge feature)

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

What is the function of the EN pin?

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

Does this part number include an auto-discharge feature?

No, the AP7353-33CV4-7 does not have an integrated output discharge resistor. The AP7353D variant includes this feature.