AP7353D-28CV4-7

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

The AP7353D-28CV4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 2.8V output with a maximum current of 250mA. It operates within an input voltage range of 2.0V to 5.5V and features high power supply rejection ratio (PSRR) of 90dB at 1kHz and low output noise of 10µVrms from 10Hz to 100kHz. The device incorporates an enable pin for shutdown control and includes internal protections such as current limiting and thermal shutdown. It utilizes the X1-WLB0707-4 package and maintains a quiescent current of 18µA typical.

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

• Integrated enable pin allows precise power management through active-high activation and active-low shutdown modes.
• High ripple rejection capability ensures clean power delivery in sensitive RF and communication circuits.
• Low output noise characteristic supports high-performance analog applications requiring minimal signal interference.
• Built-in discharge function automatically drains output capacitance when disabled to ensure rapid system reset.

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

• Smartphones and tablets
• RF power supplies
• Cameras
• Portable video devices
• Wireless 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 configuration. Confirm compliance with RoHS directives and environmental standards relevant to your manufacturing region. Ensure ordering documentation aligns with the manufacturer's standard terms and conditions regarding quality and liability.

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

Select this component for designs requiring a compact footprint with integrated enable functionality. The low dropout voltage and high PSRR make it suitable for battery-powered systems where efficiency and noise sensitivity are critical. Verify that the load requirements do not exceed the 250mA continuous output limit under all operating temperature conditions.

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

This device belongs to the AP7353 series of low dropout regulators designed for portable electronics. It distinguishes itself with a CMOS process technology that enables low quiescent current operation. The series offers various fixed output voltages and packaging options to accommodate diverse PCB layout constraints and power density requirements.

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

AP7353-28CV4-7

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

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

The 'D' indicates that the regulator includes an internal auto-discharge resistor on the output pin, which pulls the output voltage down when the device is disabled.

How does the enable pin operate?

The enable pin must be driven high to turn the regulator on and pulled low to enter shutdown mode; it must not be left floating during operation.