AP7343D-25W5-7

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

The AP7343D-25W5-7 is a fixed-output low dropout regulator providing 2.5V with ±1% accuracy. It operates within a 1.7V to 5.25V input range and delivers up to 300mA output current. Key electrical characteristics include 75dB ripple rejection at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. The device features an enable pin, thermal shutdown, and short-circuit protection. It is housed in the SOT25 package.

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

• Integrated N-channel auto-discharge function for rapid output voltage decay upon shutdown
• High power supply ripple rejection capability for clean power delivery
• Low output noise profile suitable for sensitive analog and RF circuits
• Built-in thermal shutdown and fold-back current limiting for robust operation

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

• RF supplies
• Cameras
• Portable media players
• Wireless communication equipment

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

Verify the specific suffix 'D' indicates the inclusion of the internal discharge resistor, distinguishing it from non-discharge variants. Confirm the 'W5' suffix corresponds to the SOT25 package type required for your PCB layout. Ensure the ordering code matches the exact 2.5V fixed output requirement. Cross-reference the datasheet revision to confirm compatibility with your design specifications.

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

Select this component when a fixed 2.5V rail is required with minimal external components. The SOT25 package offers a compact footprint for space-constrained designs. Consider the discharge feature if fast turn-off times are necessary. Verify that the input voltage remains above the dropout threshold across the full load and temperature range to maintain regulation.

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

This part belongs to the AP7343 family of high PSRR, low-noise LDOs from Diodes Incorporated. The 'D' suffix denotes the version with an integrated output discharge resistor, while 'W5' specifies the SOT25 surface-mount package. It is designed for portable handheld devices requiring efficient power management and stable voltage regulation under varying load conditions.

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

AP7343-25W5-7 is the non-discharge equivalent within the same package. For automotive applications, consider the AP7343Q series which holds separate automotive compliance certification. Verify pinout and thermal characteristics match before substituting.