AP7351D-27FS4-7B

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

The AP7351D-27FS4-7B 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 operates within an input voltage range of 1.4V to 5.5V and guarantees an output current of 150mA. It features ultra-low quiescent current as low as 0.5µA and typical standby current of 0.02µA.

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

• Ultra-low quiescent current for extended battery life in wearable devices
• High ripple rejection up to 60dB at 1kHz
• Integrated active output discharge for known startup states
• Thermal shutdown and short-circuit current foldback protection

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 FS4 corresponds to the X2-DFN1010-4 package type and 7B indicates tape and reel packaging. Confirm that the 27 designation matches the required 2.7V fixed output voltage. Ensure compatibility with moisture sensitivity level 1 per J-STD-020 requirements during storage and handling.

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

Select this component when designing low-power handheld or wearable devices requiring extended battery replacement intervals. The device provides a fixed 2.7V output suitable for various core voltages and I/O interfaces. Consider the thermal resistance characteristics of the X2-DFN1010-4 package for PCB layout optimization.

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

This part belongs to the AP7351D series of 150mA ultra-low quiescent current LDOs with enable functionality. The series offers multiple fixed output voltage options ranging from 0.8V to 4.5V. It is designed for applications needing high output voltage accuracy and low noise performance in compact form factors.

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

AP7351D-27W5-7

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

What is the function of the EN pin?

The EN pin enables or disables the regulator. Driving it high turns the regulator on, while pulling it low puts the device into shutdown mode.

Is the AP7351D-27FS4-7B RoHS compliant?

Yes, the device is totally lead-free, fully RoHS compliant, and halogen- and antimony-free.