AP7343-285W5-7

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

The AP7343-285W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 2.85 V with a guaranteed maximum load current of 300 mA. It operates within an input voltage range of 1.7 V to 5.25 V and features high power supply rejection ratio performance of 75 dB at 1 kHz alongside low output noise of 60 µVrms from 10 Hz to 100 kHz. The device incorporates CMOS technology for low quiescent current consumption of 35 µA and includes integrated thermal shutdown and fold-back short-circuit protection. It is housed in a compact SOT-25 surface-mount package.

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

• Integrated enable pin allows precise control over regulator activation and shutdown states
• High ripple rejection capability ensures stable operation under noisy power supply conditions
• Low output noise characteristic supports sensitive RF and communication circuit requirements
• Built-in thermal shutdown and short-circuit protection mechanisms safeguard against overload events

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

• Smart phones and tablets
• RF power supplies
• Portable video devices
• Wireless adapters and communication equipment

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

Verify the specific suffix W5 corresponds to the SOT-25 package configuration required for your PCB layout. Confirm that the 285 designation matches the exact 2.85 V output voltage needed for your application. Ensure compatibility with the non-discharge variant if rapid output voltage decay upon shutdown is not required. Check datasheet specifications for thermal resistance values relevant to your enclosure design.

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

Select this component when a fixed 2.85 V rail is required with minimal footprint constraints. Consider the SOT-25 package for space-limited designs where thermal dissipation remains within acceptable limits. Evaluate the 300 mA current capacity against peak load demands to ensure adequate headroom. Verify that the input voltage range accommodates the lowest expected source voltage while maintaining 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 series offers various fixed output voltages ranging from 0.9 V to 3.6 V. Different suffixes indicate package types such as X2-DFN1010-4 or SOT-25, and discharge options. The AP7343Q variant serves automotive applications with extended qualification standards.

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

AP7343-28W5-7 provides a similar form factor with a 2.8 V output. AP7343-29W5-7 offers a 2.9 V output in the same package. For automotive environments, consider the AP7343Q series which meets AEC-Q100 standards.