Diodes Incorporated AP7361-10E-13

Overview

AP7361-10E-13 from Diodes Incorporated is a 1A fixed-output (1.0V) ultra-low dropout linear regulator with enable, designed for core and I/O power in FPGA/DSP systems and battery-powered devices. It delivers 150mV dropout at 300mA, 70µA typical quiescent current, ±1% output voltage accuracy over load/temperature, and operates across 2.2V–6.0V input range.

For engineers reviewing the AP7361-10E-13 datasheet, AP7361-10E-13 pinout, AP7361-10E-13 application, or AP7361-10E-13 equivalent, key selection criteria include dropout performance at full load, thermal shutdown threshold (150°C), EN pin logic thresholds (VIH ≥1.0V, VIL ≤0.3V), and SO-8EP package thermal resistance (θJA = 100°C/W).

Technical Context

The AP7361-10E-13 integrates a PMOS pass element, 0.8V bandgap reference, error amplifier, and thermal shutdown circuitry. Its fixed 1.0V output is internally set-no external resistor divider required-and it supports fast transient response due to low output impedance and high PSRR (65dB @1kHz).

Enable control is active-high with <0.01µA leakage at VIH/VIL boundaries, and the SO-8EP package features an exposed thermal pad for enhanced heat dissipation. Current limiting triggers at 1.1–1.5A, and short-circuit protection clamps output to ~200mA when VOUT drops below 15% of nominal.

Key Specifications

Pinout & Package

AP7361-10E-13 is packaged in SO-8EP (exposed pad), a thermally enhanced variant of SOIC-8 with integrated thermal slug. The package supports up to 1.19W power dissipation at +25°C ambient (θJA = 100°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1703T-1002E/MB and TLS850F1BTV50, AP7361-10E-13 uniquely combines 1A output, SO-8EP thermal robustness, active-high EN, and 150mV dropout - making it optimal for high-density FPGA and server core power where space, thermal headroom, and dynamic response are constrained.

Availability

AP7361-10E-13 is available at Aetrix Electronics and suitable for FPGA core power, industrial PLC I/O modules, and battery-powered IoT sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP7361-10E-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 ICs, with emphasis on power management, signal integrity, and protection solutions.

The AP7361 belongs to Diodes' high-current LDO family, engineered for demanding FPGA, DSP, and portable computing applications where low dropout, fast transient response, and thermal resilience are essential.

FAQ

What is the minimum input voltage required for AP7361-10E-13 to maintain 1.0V output at 1A?

The device requires VIN ≥ VOUT + VDROPOUT. At 1A, typical dropout is 500mV, so minimum VIN is 1.5V. However, the absolute minimum specified input is 2.2V per datasheet - this accounts for worst-case variation, temperature drift, and line regulation margin. Operation below 2.2V is not guaranteed.

Can AP7361-10E-13 be used without an external EN signal?

Yes. If always-on operation is desired, tie the EN pin directly to the IN pin. This ensures the regulator remains enabled regardless of system control signals. Do not leave EN floating - it must be actively driven high or pulled to IN; internal pull-up is not provided.

Is the SO-8EP package's exposed pad electrically connected?

No - the exposed thermal pad on the SO-8EP package is internally connected to GND (Pin 4 and Pin 8). It must be soldered to a PCB ground plane with ≥4 thermal vias to ensure proper heat dissipation and electrical grounding. Failure to connect it degrades thermal performance and may trigger premature thermal shutdown.

Does AP7361-10E-13 require a minimum load current for stability?

No. The regulator remains stable and fully regulated down to zero load current. Unlike some older LDOs, it does not require a minimum output current or dummy load. This is confirmed in the "No Load Stability" section of the datasheet and validated across –40°C to +85°C ambient.