Diodes Incorporated AP7366-30W5-7

Overview

AP7366-30W5-7 from Diodes Incorporated is a fixed-output 3.0V, 600mA low-dropout linear regulator in SOT25 package, featuring 60μA quiescent current, 300mV dropout at full load, 75dB PSRR at 1kHz, and integrated enable control, thermal shutdown, and current-limit protection-designed for battery-powered portable electronics requiring stable low-power voltage regulation.

For engineers reviewing the AP7366-30W5-7 datasheet, AP7366-30W5-7 pinout, AP7366-30W5-7 application, or AP7366-30W5-7 equivalent, key selection considerations include output voltage accuracy (±1.5% for 3.0V), fast 150μs start-up time, stability with 1μF ceramic output capacitor, and compatibility with input voltages from 2.2V to 6V in space-constrained SOT25 layouts.

Technical Context

The AP7366-30W5-7 implements a PMOS pass transistor architecture enabling low dropout (300mV @ 600mA) and ultra-low quiescent current (60μA). Its internal 0.8V bandgap reference and error amplifier support precise output regulation across -40°C to +85°C ambient range.

Enable logic operates with VIH ≥1.0V and VIL ≤0.3V, allowing direct interfacing with 1.8V/3.3V GPIOs. Built-in thermal shutdown triggers at +150°C with +20°C hysteresis, and short-circuit protection limits output current to ~250mA during fault conditions.

Key Specifications

Pinout & Package

SOT25 package (3.0mm × 1.7mm × 1.3mm height) with exposed pad not electrically connected; requires standard reflow profile per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with MCP1700-3002E/TO and TLS850B2TE/V1, the AP7366-30W5-7 uniquely balances 600mA capability, 60μA IQ, enable control, and robust protection in a compact SOT25-making it optimal for portable industrial and consumer devices where performance, size, and reliability intersect.

Availability

AP7366-30W5-7 is available at Aetrix Electronics and suitable for wearable health monitors, industrial sensor nodes, USB-C peripheral hubs, and smart home controllers requiring stable component supply with consistent lead times and volume scalability.

Supply support for AP7366-30W5-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs, with design centers across Asia, Europe, and the U.S., serving industrial, computing, communications, and consumer markets.

The AP7366 series belongs to Diodes' precision LDO portfolio, engineered specifically for battery-powered and space-constrained applications demanding low IQ, fast transient response, and comprehensive fault protection without external components.

FAQ

What is the minimum input voltage required for stable 3.0V output at 600mA?

The AP7366-30W5-7 requires VIN ≥ 3.3V to maintain regulated 3.0V output at full 600mA load, based on its 300mV dropout specification. At lower loads (e.g., 100mA), dropout drops to ~110mV, permitting stable operation down to 3.11V input. Operation below 2.2V input is prohibited per absolute maximum ratings.

Can the AP7366-30W5-7 be used without an output capacitor?

No. The AP7366-30W5-7 requires a minimum 1μF ceramic output capacitor placed within 2mm of the OUT and GND pins to ensure stability and transient performance. Omitting it causes oscillation and potential device failure. The datasheet confirms stability only with ≥1μF ceramic capacitors having ESR between 10mΩ and 300mΩ.

Does the EN pin require a pull-up resistor for default-on operation?

No external pull-up is required. The EN pin has an internal 3MΩ pulldown resistor (RENPD = 3MΩ), so tying EN directly to IN guarantees reliable turn-on. Adding an external pull-up adds unnecessary complexity and may interfere with controlled sequencing in multi-rail systems.

How does thermal performance differ between SOT25 and U-DFN2020-6 packages?

The U-DFN2020-6 package offers lower thermal resistance (θJA = 132°C/W vs. 169°C/W for SOT25), enabling ~25% higher power dissipation before thermal shutdown. However, the AP7366-30W5-7 uses SOT25, so thermal design must account for its higher θJA-especially at 600mA with >1V input-to-output differential-requiring adequate copper pour and airflow.