AP7331-WG-7

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

The AP7331-WG-7 is a fixed-output linear regulator manufactured by Diodes Incorporated, housed in an SOT-25 package. It provides a maximum output current of 300mA with a wide input voltage range from 2V to 6V. The device features a typical quiescent current of 65µA and a fast start-up time of 80µs. Built-in protections include current limiting, short-circuit protection, and thermal shutdown. It operates within an ambient temperature range of -40°C to 85°C.

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

• Integrated low dropout linear regulator with enable pin control
• Fast transient response suitable for rapidly changing loads
• Built-in over-current, short-circuit, and thermal shutdown 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 specific fixed output voltage suffix (e.g., 10 for 1.0V) as the base model AP7331 supports multiple options. Confirm the WG-7 suffix indicates the SOT-25 package and tape-and-reel packaging. Ensure compatibility with RoHS standards and lead-free finish requirements specified by the manufacturer.

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

Select this component when a low quiescent current and fast start-up are required for portable applications. Verify that the required output voltage matches one of the available fixed options ranging from 1.0V to 3.3V. Ensure the load current does not exceed 300mA and the input voltage remains within the 2V to 6V operating range.

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

The AP7331 series includes both adjustable and fixed output variants available in SOT-25 and DFN2020-6 packages. The AP7331-WG-7 specifically denotes the SOT-25 package version. Other suffixes indicate different output voltages or package types, such as SN for DFN2020-6.

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

Check datasheets for other LDOs with similar 300mA output, 2V-6V input range, and SOT-25 packaging. Verify pinout compatibility and electrical parameters like quiescent current and dropout voltage before substitution.

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

What is the typical quiescent current of the AP7331?

The typical quiescent current is approximately 65µA over the full load range.

How is the enable function controlled?

The device is turned on when the EN pin is set to a logic high level and turned off when pulled low.