AP7343D-26FS4-7B

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

The AP7343D-26FS4-7B is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 2.6V output with a maximum current of 300mA. It operates within an input voltage range of 1.7V to 5.25V and features high power supply rejection ratio (PSRR) of 75dB at 1kHz. The device incorporates an enable pin for power control and includes internal protections such as thermal shutdown and current limiting. Packaged in the compact X2-DFN1010-4 (Type B) format, it supports surface mount assembly.

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

• Integrated enable pin allows precise power management and system-level shutdown control
• High ripple rejection capability ensures clean power delivery for sensitive RF applications
• Built-in discharge function rapidly removes residual charge from the output capacitor upon disable

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

• RF power supplies
• Portable media players
• Wireless communication devices
• Cameras

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

Verify the specific ordering suffix '7B' corresponds to the required tape and reel packaging quantity of 10,000 units per carrier. Confirm that the 'D' designation in the part number indicates the inclusion of the auto-discharge feature, which affects the turn-off behavior compared to non-discharge variants. Ensure compatibility with the X2-DFN1010-4 footprint during PCB layout verification.

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

Select this component when a fixed 2.6V rail is required with minimal quiescent current consumption. The integrated discharge feature makes it suitable for battery-powered systems requiring rapid power-down states. Verify that the input voltage remains within the 1.7V to 5.25V range under all operating conditions to maintain regulation stability.

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

This device belongs to the AP7343 family of low dropout regulators designed for low-power handheld equipment. The series offers various fixed output voltages ranging from 0.9V to 3.6V. The 'D' suffix specifically denotes versions equipped with an output discharge resistor, distinguishing them from standard variants without this feature.

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

AP7343-26FS4-7B serves as a direct functional substitute if the discharge feature is not required in the application design.