Diodes Incorporated AP7361C-10SP-13

Overview

AP7361C-10SP-13 from Diodes Incorporated is a 1A fixed-output (1.0V) ultra-low dropout linear regulator with enable, designed for precision power rail regulation in space-constrained applications. It delivers ±1% output voltage accuracy, 360mV dropout at 1A (for 3.3V variant; 1.0V variant exhibits ~710mV at 300mA), and 60µA typical quiescent current. Its SO-8EP package supports thermal vias for enhanced power dissipation in industrial and consumer power management circuits.

For engineers reviewing the AP7361C-10SP-13 datasheet, AP7361C-10SP-13 pinout, AP7361C-10SP-13 application, or AP7361C-10SP-13 equivalent, key selection criteria include dropout performance at 1.0V output, EN pin logic thresholds (VIH ≥ 1.0V, VIL ≤ 0.3V), stability with ≥2.2µF MLCC output capacitors, and thermal shutdown behavior at 150°C junction temperature.

Technical Context

The AP7361C-10SP-13 integrates a PMOS pass element, band-gap reference (0.8V), error amplifier, and fold-back current limiting (400mA short-circuit clamp). Its architecture enables stable regulation without minimum load and supports both fixed 1.0V output and adjustable configurations via external resistor divider on the ADJ pin.

It features active-high enable control with internal 3.0MΩ pull-down resistor, 75dB PSRR at 1kHz, and thermal shutdown with 20°C hysteresis. The SO-8EP package includes an exposed thermal pad connected to Pin 4 (GND), enabling junction-to-ambient thermal resistance of 100°C/W under standard PCB layout conditions.

Key Specifications

Pinout & Package

AP7361C-10SP-13 uses the SO-8EP (exposed pad) package, featuring an 8-pin configuration with Pin 4 internally connected to the thermal pad and externally designated as GND. This construction provides superior thermal performance over standard SO-8 while maintaining footprint compatibility.

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 XC6210B102MR-G, AP7361C-10SP-13 uniquely balances 1A output, 710mV dropout at 300mA, and 60µA IQ in an SO-8EP package - making it the only option among the three capable of powering high-current 1.0V logic rails while maintaining sub-100µA standby consumption.

Availability

AP7361C-10SP-13 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive infotainment displays, and portable medical monitors requiring stable component supply across extended product lifecycles.

Supply support for AP7361C-10SP-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.

The AP7361C belongs to Diodes' high-performance LDO regulator family, engineered for low-noise, high-accuracy power delivery in battery-powered and thermally demanding embedded systems.

FAQ

What is the maximum allowable input voltage for AP7361C-10SP-13?

The absolute maximum input voltage is 6.5V, but recommended operating range is 2.2V to 6.0V. Exceeding 6.0V risks violating SO-8EP package thermal limits and may trigger premature thermal shutdown under 1A load. For 1.0V output, minimum valid input is 1.71V (1.0V + 710mV dropout), though regulation begins reliably at VIN ≥ 2.2V per datasheet conditions.

Can AP7361C-10SP-13 operate without an output capacitor?

No - the device requires a minimum 2.2µF ceramic capacitor between OUT and GND for stability, as confirmed in the Application Information section. Omitting it causes oscillation and output voltage collapse. Unlike some LDOs, AP7361C does not support capacitor-less operation; MLCC, tantalum, or polymer capacitors ≥2.2µF are all acceptable.

Is the EN pin internally pulled down in AP7361C-10SP-13?

Yes - the EN pin has a guaranteed 3.0MΩ internal pull-down resistor (RENPD), ensuring the regulator remains off during power-up until a valid logic-high signal (>1.0V) is applied. This eliminates need for external pull-down resistors in most designs, simplifying BOM and reducing board area.

How does thermal performance differ between SO-8EP and TO252 packages for the same 1.0V output?

SO-8EP (θJA = 100°C/W) provides 25% better thermal resistance than TO252 (θJA = 125°C/W) under identical PCB layout conditions. At 1A load with 3.3V input, SO-8EP dissipates 2.3W and rises ~230°C above ambient, while TO252 rises ~288°C - making SO-8EP more suitable for compact, sealed enclosures without airflow.