AP7361-33D-13

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

The AP7361-33D-13 is a fixed-output linear regulator from Diodes Incorporated, providing a stable 3.3V output at up to 1A load current. It operates within an input voltage range of 2.2V to 6.0V and features a typical quiescent current of 70µA. The device utilizes a TO252 package and incorporates built-in current limiting, thermal shutdown, and short-circuit protection. Designed for low dropout performance, it maintains regulation with minimal input-to-output voltage differential.

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

• Ultra-low dropout linear regulator architecture
• Integrated enable pin for power management control
• Built-in overcurrent, thermal shutdown, and short-circuit protection
• Stable operation with ceramic output capacitors

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

• Servers and laptops
• FPGA and DSP core or I/O power supplies
• TV and home electrical appliances
• Battery-powered devices

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

Verify the specific suffix 'D' corresponds to the TO252 package variant when sourcing. Confirm that the '-13' suffix indicates tape and reel packaging. Ensure compatibility with standard surface-mount assembly processes for the TO252 footprint. Cross-reference the datasheet revision to confirm all electrical characteristics match design requirements.

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

Select this component for applications requiring a fixed 3.3V rail with high current capability. The TO252 package offers higher power dissipation compared to smaller footprints. Verify that the input voltage remains above the minimum dropout threshold under maximum load conditions. Consider thermal resistance values when designing the PCB copper plane for adequate heat sinking.

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

This part belongs to the AP7361 family of 1A low dropout regulators. The series includes adjustable and fixed voltage options across multiple packages including U-DFN3030-8, SOT89-5, SOT223, and SO-8EP. The AP7361C is noted as the recommended successor for new designs, though the AP7361 remains functional for existing implementations.

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

AP7361C-33SP-13 (SO-8EP package)

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

Is the adjustable version available in the TO252 package?

No, adjustable operation is not available in the TO252 package; only fixed output voltages are offered.

What is the minimum required output capacitor for stability?

The device is stable with ceramic output capacitors of at least 2.2µF, provided the ESR is between 10mΩ and 300mΩ.