AP7343-09W5-7

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

The AP7343-09W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 0.9V with a maximum continuous output current of 300mA. It operates within an input voltage range of 1.7V to 5.25V and features a typical quiescent current of 35µA. The device incorporates high power supply rejection ratio (PSRR) performance of 75dB at 1kHz and low output noise of 60µVrms from 10Hz to 100kHz. Packaged in the SOT-25-5 surface-mount configuration, it supports an operating ambient temperature range from -40°C to +85°C.

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

• Integrated enable pin for precise power management control
• Built-in short-circuit protection and thermal shutdown mechanisms
• Low equivalent series resistance internal pass element for minimal voltage drop
• High ripple rejection capability for sensitive analog circuitry

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

• RF power supply circuits
• Portable video devices
• Wireless communication modules
• Camera systems

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

Verify the specific suffix W5 corresponds to the SOT-25 package and the '09' designation confirms the 0.9V fixed output. Confirm the absence of the 'D' suffix indicates the non-discharge variant without an auto-discharge resistor on the output node. Ensure compliance with RoHS and halogen-free requirements as specified in the manufacturer documentation.

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

Select this component when a stable 0.9V rail is required for low-power applications. Consider the SOT-25 footprint constraints and verify that the input voltage remains above the minimum threshold plus dropout voltage. Evaluate thermal dissipation capabilities based on the junction-to-ambient resistance if operating near maximum load currents.

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

This part belongs to the AP7343 family of CMOS low-dropout regulators designed for handheld equipment. The series offers various fixed output voltages ranging from 0.9V to 3.6V. The standard AP7343 differs from the automotive-grade AP7343Q and the discharge-enabled AP7343D variants.

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

AP7343-09W5-7D serves as a functional substitute if output discharge capability is required. For automotive applications, the AP7343Q-09W5-7 provides equivalent electrical characteristics with extended reliability standards.