AP7343D-22W5-7

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

The AP7343D-22W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 2.2V. It operates within an input voltage range of 1.7V to 5.25V and supports a guaranteed output current of 300mA. The device features high power supply rejection ratio (PSRR) of 75dB at 1kHz and low output noise of 60µVrms from 10Hz to 100kHz. Quiescent current is typically 35µA, with standby current as low as 0.01µA. It includes thermal shutdown and short-circuit protection, housed in a SOT-25 package.

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

• Integrated N-channel auto-discharge circuit for rapid output voltage decay upon shutdown
• High ripple rejection capability ensuring stable performance under noisy conditions
• Low output noise profile suitable for sensitive RF and communication circuits
• Built-in enable control pin allowing precise power management and system sequencing

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

• RF power supply rails
• Portable media players
• Wireless adapters
• Smartphones and tablets

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 SOT-25 package type required for your PCB layout. Ensure the ordering code matches the exact 2.2V fixed output specification needed for your design.

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

Select this component when a fixed 2.2V rail is required with minimal footprint. The D-suffix variant is appropriate if fast output discharge is necessary after disable. Consider the SOT-25 package dimensions against available board space. Verify that the 300mA load current does not exceed thermal limits given the expected ambient temperature and copper area.

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

This part belongs to the AP7343 family of CMOS LDOs designed for low-power handheld equipment. The series offers various fixed output voltages ranging from 0.9V to 3.6V. The AP7343D-22W5-7 specifically provides the 2.2V option with discharge functionality in a compact surface-mount package, fitting into the broader portfolio of Diodes Incorporated's PMIC solutions.

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

AP7343-22W5-7 serves as the non-discharge equivalent within the same package.