AP7340D-23FS4-7

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

The AP7340D-23FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 2.3V with ±1% accuracy at +25°C and ±1.5% across the -40°C to +85°C temperature range. It supports an input voltage range from 1.7V to 5.25V and delivers up to 150mA of guaranteed output current. The device features a quiescent current as low as 35µA, ripple rejection of 75dB at 1kHz, and output noise of 60µVrms (10Hz to 100kHz). It includes short-circuit protection and an enable pin for power control.

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

• Integrated auto-discharge circuitry that rapidly bleeds residual charge from the output capacitor when disabled
• High power supply ripple rejection capability to minimize noise in sensitive analog circuits
• Low output noise performance suitable for RF and precision signal processing applications
• Built-in thermal and current limit protection to safeguard against overload conditions

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

• Smartphone and tablet power management systems
• RF module power supply rails
• Portable video equipment
• Wireless communication adapters
• Portable media players

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

Verify the specific suffix 'D' indicates the inclusion of the internal discharge resistor network, which distinguishes it from the standard AP7340 variant. Confirm package marking codes match the X2-DFN1010-4 footprint requirements. Ensure compliance with RoHS and REACH directives if required by your manufacturing standards. Check for any recent Product Change Notifications regarding wafer sources or material updates.

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

Select this component when a stable 2.3V rail is required with minimal board space constraints. The D-suffix version is preferred over the non-discharge variant if rapid shutdown response is necessary to prevent battery drain. Evaluate the dropout voltage characteristics relative to your minimum input voltage to ensure regulation under all load conditions. Consider the 35µA quiescent current for battery-operated devices requiring extended standby times.

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

This part belongs to the AP7340 family of high PSRR LDOs designed for portable electronics. The 'D' designation specifically denotes the presence of an integrated N-channel auto-discharge feature on the output pin. This family utilizes a CMOS process to achieve low power consumption while maintaining high accuracy and stability with small ceramic capacitors.

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

AP7340-23FS4-7 serves as the direct functional substitute but lacks the built-in output discharge resistor. Verify that the absence of the discharge feature does not impact system shutdown requirements before substituting.