AP7331-20WG-7

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

The AP7331-20WG-7 is a fixed-output linear regulator from Diodes Incorporated, providing a stable 2.0V output with a maximum load current of 300mA. It operates within an input voltage range of 2V to 6V and features a typical quiescent current of 65µA across the full load spectrum. The device incorporates a low dropout characteristic, typically 300mV at 300mA, and delivers a power supply rejection ratio (PSRR) of 65dB at 100Hz. Packaged in a surface-mount SOT-25 format, it supports an ambient operating temperature range from -40°C to 85°C.

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

• Integrated enable pin for active-high control of power states
• Built-in protection mechanisms including current limiting, short-circuit prevention, and thermal shutdown
• Fast transient response capability supporting rapid load transitions without significant voltage overshoot or undershoot
• Stable operation guaranteed with low ESR ceramic capacitors

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 that the component matches the specific 2.0V fixed output designation within the AP7331 series. Confirm the package type corresponds to the SOT-25 form factor indicated by the 'W' suffix. Ensure compliance with RoHS directives and lead-free finish requirements as specified in the manufacturer documentation before finalizing procurement.

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

Select this component when a precise 2.0V rail is required for portable electronics. The low quiescent current makes it suitable for battery-powered applications where standby power consumption must be minimized. Verify that the input voltage remains within the 2V to 6V range and that the load does not exceed 300mA to ensure optimal performance and thermal stability.

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

This part belongs to the AP7331 family of low dropout regulators designed for low-power applications. The series offers both adjustable and fixed output options, catering to various voltage requirements. The AP7331-20WG-7 specifically provides a fixed 2.0V output, distinguishing it from other variants in the lineup that offer different fixed voltages or adjustable configurations.

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

AP7331-20SNG-7

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

What is the function of the EN pin on the AP7331-20WG-7?

The EN pin serves as an active-high enable input. Setting this pin to a logic high level turns the regulator on, while pulling it low turns the device off.

How does the AP7331-20WG-7 protect against over-current conditions?

The device includes built-in current limit protection that clamps the output current to approximately 600mA during overload, and short-circuit protection that limits current to around 100mA if the output is shorted to ground.