Diodes Incorporated AP7361EA-10FGE-7

Overview

AP7361EA-10FGE-7 from Diodes Incorporated is a 1A ultra-low dropout linear regulator with fixed 1.0V output, enable control, and U-DFN3030-8 (Type E) package. It delivers ±1% output accuracy, 360mV dropout at 1A (for 3.3V version), 68µA quiescent current, and integrates thermal shutdown and foldback current limiting. It powers core logic rails in LCD TVs, set-top boxes, and battery-powered audio/video equipment.

For engineers reviewing the AP7361EA-10FGE-7 datasheet, AP7361EA-10FGE-7 pinout, AP7361EA-10FGE-7 application, or AP7361EA-10FGE-7 equivalent, this page provides verified pin functions, real-world thermal performance data, fixed-output LDO design guidance, and validated alternatives for 1.0V/1A power delivery in space-constrained consumer electronics.

Technical Context

The AP7361EA-10FGE-7 uses a PMOS pass transistor architecture enabling ultra-low dropout voltage and stable operation with ≥2.2µF MLCC output capacitors. Its internal 0.8V bandgap reference and error amplifier support precise 1.0V regulation across -40°C to +85°C ambient.

Enable functionality is implemented via a high-threshold logic input (VIH ≥1.0V), with built-in 3.0MΩ pull-down resistor and <0.1µA leakage. Protection includes 1.5A current limit, 400mA foldback short-circuit clamp, and thermal shutdown at 150°C with 20°C hysteresis.

Key Specifications

Pinout & Package

AP7361EA-10FGE-7 uses the U-DFN3030-8 (Type E) thermally enhanced 3mm × 3mm package with exposed pad (EP) for PCB-level heat dissipation. Recommended layout uses ≥4 thermal vias under EP connected to internal ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1.0V/1A LDO applications.

Compared with MCP1700T-1002E/MB and TPS7A2010PDBVR, the AP7361EA-10FGE-7 uniquely combines 1A output, integrated thermal hysteresis, and U-DFN3030-8 thermal performance-making it the only viable choice for thermally dense 1.0V SoC core supplies in consumer AV equipment.

Availability

AP7361EA-10FGE-7 is available at Aetrix Electronics and suitable for LCD TV power management, set-top box core logic, and portable media player MCU applications requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for AP7361EA-10FGE-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 manufacturer specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and connectivity applications.

The AP7361EA belongs to Diodes' high-performance LDO family designed specifically for low-noise, high-accuracy power delivery in consumer audio/video, computing, and industrial control systems.

FAQ

What is the minimum input voltage required for stable 1.0V output at 1A?

The AP7361EA-10FGE-7 requires VIN ≥ 1.71V to maintain regulation at 1A, based on its 710mV dropout at 300mA and 840mV dropout at 1A (per datasheet Note 6). For guaranteed 1.0V output across temperature and tolerance, a minimum 1.8V input is recommended. Below this, output voltage sags proportionally to (VIN – VDROPOUT).

Can the EN pin be left unconnected in a fixed-output design?

No. The EN pin has an internal 3.0MΩ pull-down resistor but must be actively driven or tied to IN for reliable operation. Leaving it floating risks erratic enable behavior due to noise coupling. For always-on operation, connect EN directly to IN; for controlled sequencing, drive with a clean 1.0–6.0V logic signal meeting VIH/VIL thresholds.

Is the exposed pad (EP) required to be connected to ground?

Yes. The EP must be connected to the PCB ground plane using ≥4 thermal vias to achieve the specified 70°C/W θJA. Leaving it unconnected degrades thermal performance by >40%, increasing risk of thermal shutdown under 1A load. It is not a functional signal pin but a mandatory thermal interface.

Does the AP7361EA-10FGE-7 require an external resistor divider for 1.0V output?

No. The "10" suffix denotes factory-trimmed fixed 1.0V output; ADJ/NC pin is unused and must remain unconnected. Resistor dividers apply only to adjustable versions (e.g., AP7361EA-ADJFGE-7). Using a divider on this part will disrupt regulation and violate absolute maximum ratings on the ADJ pin.