AP7343Q-29FDUW-7

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

The AP7343Q-29FDUW-7 is a fixed-output low dropout regulator from Diodes Incorporated, providing a stable 2.9 V output with a maximum load current of 300 mA. It operates within an input voltage range of 1.7 V to 5.25 V and features a typical power supply rejection ratio of 75 dB. The device maintains a quiescent current of 35 uA and supports operation across an extended temperature range from -40 °C to +125 °C. It is housed in a W-DFN2020-6 surface-mount package and holds AEC-Q100 automotive qualification.

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

• Automotive-grade reliability certified under the AEC-Q100 standard for robust performance in vehicle environments.
• High power supply rejection ratio ensures effective suppression of input noise and ripple on the output line.
• Low quiescent current consumption extends battery life in portable and energy-sensitive applications.

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

• Powering automotive electronic control units and sensors requiring stable voltage regulation.
• Supplying power to RF modules and communication interfaces in mobile devices.
• Providing clean power rails for microcontrollers and digital logic circuits in industrial systems.

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

Verify the specific suffix FDUW corresponds to the W-DFN2020-6 package configuration when sourcing. Confirm that the AEC-Q100 qualification status is required for your specific application environment. Ensure compatibility with automated assembly processes given the small outline package dimensions. Cross-reference the manufacturer's latest datasheet revision to confirm pinout and thermal characteristics before finalizing procurement.

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

Select this component when a fixed 2.9 V rail is needed with high noise immunity in space-constrained designs. The W-DFN2020-6 package offers a compact footprint suitable for dense PCB layouts. Consider the 300 mA output capability against the expected peak load requirements of the target circuit. The wide operating temperature range makes it suitable for harsh environmental conditions without derating concerns.

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

This part belongs to the AP7343Q series, which represents the automotive-grade variant of the AP7343 family. The series is characterized by its combination of high PSRR and low noise, addressing the stringent electromagnetic interference requirements of modern electronics. The Q-series designation specifically indicates compliance with automotive quality standards, distinguishing it from commercial grade counterparts.

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

Direct substitutes include other parts within the AP7343Q family with different output voltages or packages, such as AP7343Q-33FDZW-7. Verify that any replacement maintains the same 300 mA current rating and AEC-Q100 qualification if automotive use is intended.