AP7343D-35W5-7

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

The AP7343D-35W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 3.5V with a maximum continuous output current of 300mA. It operates within an input voltage range of 1.7V to 5.25V and features high power supply rejection ratio performance of 75dB at 1kHz. The device incorporates CMOS technology for low quiescent current consumption and includes integrated thermal shutdown and overcurrent protection circuits. It is housed in a surface-mount SOT-25 package suitable for dense PCB layouts.

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

• Integrated enable pin allows for precise power management control and shutdown capabilities
• High ripple rejection ratio ensures stable operation in noisy power environments
• 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 supply circuits
• Portable video equipment
• Wireless communication modules

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

Verify the specific suffix 'D' indicates the inclusion of the auto-discharge feature on the output node. Confirm the 'W5' designation corresponds to the SOT-25 package type required for your board layout. Ensure the ordering code matches the exact 3.5V fixed output requirement before finalizing procurement orders.

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

Select this component when a fixed 3.5V rail is required with minimal external component count. The SOT-25 package offers a compact footprint compared to larger regulators. Consider the internal discharge path if rapid output voltage decay is necessary during system sleep modes.

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

This part belongs to the AP7343 family of high PSRR low-noise LDOs designed for handheld communication equipment. The series provides various fixed output voltages ranging from 0.9V to 3.6V. The 'D' variant specifically adds an N-channel auto-discharge resistor to pull the output low when the enable signal is inactive.

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

AP7343-35W5-7 serves as the non-discharge alternative within the same package and electrical specification profile.