AP7343-32W5-7

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

The AP7343-32W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 3.2V with a guaranteed maximum load 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 alongside low output noise of 60µVrms from 10Hz to 100kHz. The device incorporates CMOS technology for low quiescent current consumption of 35µA and includes integrated enable control, thermal shutdown, and short-circuit protection mechanisms.

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 and low output noise ensure clean power delivery for sensitive circuits
• Built-in thermal shutdown and fold-back current limiting protect against overload conditions

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

• RF power supplies
• Portable media players
• Wireless communication devices
• Smartphones and tablets

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

Verify the specific suffix W5 corresponds to the SOT25 package configuration required for your PCB layout. Confirm that the non-discharge variant meets your standby current requirements, as discharge versions are available under different ordering codes. Ensure compatibility with RoHS compliance standards before finalizing procurement orders.

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

Select this component when a stable 3.2V rail is needed from varying input sources between 1.7V and 5.25V. Consider the SOT25 package for space-constrained designs requiring surface mount assembly. Evaluate the need for output discharge functionality; if rapid voltage decay upon shutdown is not critical, the standard version offers optimal standby performance.

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

This part belongs to the AP7343 series of low dropout regulators designed for handheld communication equipment. The series utilizes CMOS processes to achieve low power consumption while maintaining high accuracy. It is distinct from automotive-compliant variants which carry separate datasheets and qualification standards.

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

AP7343D-32W5-7 serves as a direct substitute if output discharge capability is required during shutdown states.