AP7343D-32W5-7

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

The AP7343D-32W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a precise 3.2V output with a guaranteed maximum load current of 300mA. It operates within an input voltage range of 1.7V to 5.25V and features a typical ripple rejection ratio of 75dB at 1kHz. The device incorporates an enable pin for power management control and includes built-in short-circuit protection and thermal shutdown mechanisms. Packaged in a surface-mount SOT-25-5 configuration, it supports operation across an ambient temperature range of -40°C to +85°C.

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

• CMOS-based architecture delivering high output voltage accuracy and low quiescent current consumption
• Integrated enable input allowing active high or low control for system power sequencing
• Built-in discharge function ensures rapid output voltage decay when disabled
• Robust protection against overcurrent conditions and excessive junction temperatures

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

• RF supply circuits requiring stable voltage rails
• Portable media players and handheld communication devices
• Wireless adapters and wireless communication modules
• Camera systems in portable electronic equipment

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

Verify the specific suffix 'D' indicates the presence of the internal auto-discharge feature, which distinguishes this variant from non-discharge versions. Confirm the 'W5' designation corresponds to the SOT-25 package type required for your PCB layout. Ensure the ordering code matches the exact 3.2V output specification needed for your circuit design before finalizing procurement.

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

Select this component when a fixed 3.2V rail is required with minimal footprint constraints. The SOT-25 package offers a compact solution suitable for dense PCB layouts. Consider the integrated discharge feature if fast turn-off times are necessary for battery-powered applications. Verify that the input voltage remains within the specified 1.7V to 5.25V range under all operating conditions.

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

This part belongs to the AP7343 family of low dropout regulators designed for low-power handheld equipment. The series provides various fixed output voltages ranging from 0.9V to 3.6V. The 'D' suffix specifically denotes the inclusion of an output discharge resistor, while 'W5' identifies the SOT-25 package form factor used in this specific ordering code.

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

AP7343-32W5-7 serves as a direct functional substitute lacking the discharge feature. AP7343DQ-32W5-7 is available for automotive-grade requirements with extended temperature ranges. Verify pin compatibility and thermal performance when substituting between standard and automotive variants.