AP7351D-12W5-7

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

The AP7351D-12W5-7 is a low dropout regulator with high output voltage accuracy. It includes a voltage reference, error amplifier, current limit circuit and an enable input to turn it on/off. With the integrated resistor network, fixed output voltage versions can be delivered. The device guarantees an output current of 150mA and features ultra-low quiescent current as low as 0.5µA. Typical standby current is 0.02µA. Ripple rejection is up to 60dB at 1kHz. Output voltage range is 0.8V to 4.5V with VOUT accuracy of ±1%. Input voltage range is 1.4V to 5.5V.

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

• Ultra-low quiescent current extends battery life in portable applications
• Integrated enable pin allows for precise power management control
• High ripple rejection ensures stable operation in noise-sensitive environments
• Active output discharge ensures known startup states

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

• Wearable Electronics
• Sensor Module for Internet-Of-Things (IOT)
• Wireless Communication Module
• Battery-Operated Device
• Camera
• Image Sensor

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

Verify the specific ordering suffix W5 corresponds to the SOT25 package type required for your design. Confirm that the -12 designation matches the necessary 1.2V fixed output voltage. Ensure the EN pin is properly driven high or low, as floating this pin may cause improper operation. Check thermal dissipation requirements against the specified junction-to-ambient resistance values for the chosen package.

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

Select this component when low power consumption is critical for extending battery life in handheld or wearable devices. The wide input voltage range accommodates various supply sources. Consider the enable feature if system-level power sequencing or shutdown capabilities are required. Verify that the 150mA output current meets the peak load demands of the target application circuitry.

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

This part belongs to the AP7351D series of low dropout regulators manufactured by Diodes Incorporated. The series offers multiple fixed output voltages ranging from 0.8V to 4.5V. It is designed for low-power applications requiring high accuracy and low noise. The device is available in both X2-DFN1010-4 and SOT25 packages to suit different PCB layout constraints.

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

AP7351D-12FS4-7B

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

What is the function of the EN pin?

The EN pin is used to turn the regulator on or off. Driving it high enables the regulator, while pulling it low puts the device into shutdown mode.

What is the typical standby current?

The typical standby current is 0.02µA when the EN pin is set low and there is no load.