AP7331-28WG-7

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

The AP7331-28WG-7 is a fixed-output low dropout linear regulator manufactured by Diodes Incorporated. It provides a stable 2.8V 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 at full load. It utilizes a SOT-25-5 surface-mount package. Key electrical parameters include a typical dropout voltage of 300mV, a power supply rejection ratio (PSRR) of 65dB at 100Hz, and a fast start-up time of 80µs. The unit 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 the regulator output state
• Built-in protection mechanisms including current limiting, short circuit protection, and thermal shutdown
• Fast transient response capability designed for rapid load changes without significant voltage overshoot or undershoot
• Stable operation guaranteed with small-value ceramic output 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 Diodes Incorporated part number AP7331-28WG-7. Confirm the package type is SOT-25 and the output voltage is fixed at 2.8V. Ensure the revision level aligns with the manufacturer's documentation DS31914 Rev. 3-2. Check for RoHS compliance and lead-free finish status as specified in the datasheet notes.

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

Select this component when a fixed 2.8V rail is required with up to 300mA of continuous current. It is suitable for applications needing low ground current consumption and fast startup times. The wide input voltage range allows flexibility in battery-powered designs. Ensure the PCB layout accommodates the SOT-25 footprint and includes appropriate decoupling capacitors near the input and output pins.

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

This device belongs to the AP7331 series of low dropout regulators. The series offers both adjustable and fixed output options in SOT-25 and DFN2020-6 packages. The AP7331-28WG-7 specifically denotes the fixed 2.8V variant housed in the SOT-25 package with green molding compound and tape-and-reel packaging.

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

AP7331-28SNG-7: Identical electrical specifications but housed in a DFN2020-6 package instead of SOT-25.