Diodes Incorporated AP7361EA-25SP-13

Overview

AP7361EA-25SP-13 from Diodes Incorporated is a 1A fixed-output (2.5V), ultra-low dropout linear regulator in SO-8EP package with enable input, ±1% output accuracy, 360mV dropout at 1A (for 3.3V version), and 68µA typical quiescent current-designed for stable power delivery in LCD TVs, set-top boxes, and battery-powered audio/video equipment.

For engineers reviewing the AP7361EA-25SP-13 datasheet, AP7361EA-25SP-13 pinout, AP7361EA-25SP-13 application, or AP7361EA-25SP-13 equivalent, this page delivers verified electrical parameters, thermal resistance values (θJA = 100°C/W), EN logic thresholds (VIH = 1.0V, VIL = 0.3V), PSRR (75dB @ 1kHz), and fixed-output configuration details required for low-noise, high-accuracy 2.5V rail design.

Technical Context

The AP7361EA-25SP-13 integrates a PMOS pass element with internal 0.8V bandgap reference and error amplifier to regulate fixed 2.5V output across 2.2V–6.0V input range. Its foldback short-circuit protection limits output current to 400mA during fault conditions while maintaining thermal shutdown at 150°C junction temperature.

It operates with no minimum load requirement and supports stable regulation using ≥2.2µF MLCC output capacitors. The SO-8EP package features an exposed thermal pad (Pin 8) that must be connected to PCB ground plane via thermal vias to achieve θJA = 100°C/W and sustain full 1A output under ambient temperatures up to +85°C.

Key Specifications

Pinout & Package

AP7361EA-25SP-13 uses the SO-8EP (exposed pad) package: 5mm × 6mm body with 0.95mm height, 1.27mm pitch, and thermally enhanced EP pad (Pin 8) requiring PCB grounding for thermal management.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output LDO applications.

Compared with MCP1703T-2502E/MB and TLS850B2TE/V33, the AP7361EA-25SP-13 uniquely balances 1A output, ultra-low dropout, enable control, and SO-8EP thermal performance-making it optimal for high-density consumer power rails where both current capability and thermal efficiency are critical.

Availability

AP7361EA-25SP-13 is available at Aetrix Electronics and suitable for LCD TV power rails, set-top box core logic, and portable media player MCU core applications requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for AP7361EA-25SP-13 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 solutions, with manufacturing certified to IATF 16949 and environmental compliance to RoHS 3 and halogen-free standards.

The AP7361EA belongs to Diodes' high-performance LDO family targeting consumer, computing, and industrial power management-designed to replace legacy regulators with lower dropout, tighter accuracy, and enhanced thermal robustness in compact packages.

FAQ

What is the maximum allowable input voltage for AP7361EA-25SP-13?

The absolute maximum input voltage is 6.5V, but recommended operating range is 2.2V to 6.0V. Exceeding 6.0V risks exceeding internal gate oxide ratings and may trigger thermal shutdown prematurely. For 2.5V output, VIN must remain ≥2.94V to maintain regulation under 1A load due to dropout constraints.

Can AP7361EA-25SP-13 operate without an output capacitor?

No. A minimum 2.2µF ceramic output capacitor is mandatory for stability across –40°C to +85°C. Omitting it causes oscillation and output voltage collapse under load. The device is optimized for MLCCs but also supports solid tantalum or polymer capacitors with ESR < 100mΩ.

Is the exposed pad (Pin 8) in SO-8EP required to be connected to ground?

Yes. The exposed pad must be soldered to a PCB ground plane with ≥4 thermal vias (0.3mm diameter) to achieve rated θJA = 100°C/W. Leaving it unconnected raises junction temperature by >40°C at 1A, triggering thermal shutdown well below rated current.

Does AP7361EA-25SP-13 support adjustable output configurations?

No. The "-25" suffix denotes fixed 2.5V output. Adjustable versions use "-ADJ" suffix and require external resistor divider on ADJ pin. In AP7361EA-25SP-13, Pin 3 (ADJ/NC) is internally disconnected and must remain unconnected or grounded-no adjustment is possible.