AP7331-33SNG-7

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

The AP7331-33SNG-7 is a fixed-output low dropout linear regulator manufactured by Diodes Incorporated. It provides a stable 3.3V output with a maximum load current of 300mA. The device operates within an input voltage range of 2V to 6V and features a typical quiescent current of 65µA across the full load range. It utilizes a DFN2020-6 package and includes built-in current limit, short circuit, and thermal shutdown protections. The regulator maintains stability with low ESR ceramic capacitors.

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

• Integrated enable pin for active-high control
• Fast transient response capability
• Built-in overcurrent and thermal protection

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

• XDSL Routers
• Wireless LAN Cards
• Desktop and Notebook Computers
• Battery Powered Equipments

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

Verify the component matches the specific Diodes Incorporated datasheet DS31914 Rev. 3 - 2. Confirm the DFN2020-6 package type and the 3.3V fixed output designation. Ensure compliance with RoHS standards and check for any product change notifications that may affect specifications or manufacturing locations before finalizing procurement.

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

Select this component when a 3.3V rail is required from a 2V to 6V source. It is suitable for applications needing fast startup times and low ground current consumption. Verify that the PCB layout accommodates the DFN2020-6 footprint and that the thermal dissipation requirements are met under the expected ambient temperature conditions.

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

This part belongs to the AP7331 series of low dropout regulators. The series offers both adjustable and fixed output options in SOT25 and DFN2020-6 packages. The AP7331-33SNG-7 specifically denotes the 3.3V fixed version in the green DFN2020-6 package with tape and reel packaging.

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

Compatible parts include other variants within the AP7331 family such as AP7331-XXWG-7 for SOT25 packaging or different fixed voltages like AP7331-28SNG-7. Cross-referencing pinouts and electrical characteristics is necessary when substituting with non-series components.

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

What is the minimum capacitance required for the AP7331-33SNG-7?

A 1µF ceramic capacitor is recommended for both the input and output pins to ensure stability and proper operation.

How does the AP7331-33SNG-7 handle overload conditions?

It features current limit protection that clamps the output current to approximately 600mA and short circuit protection that limits current to around 100mA.