Diodes Incorporated AP7361C-10FGE-7

Overview

AP7361C-10FGE-7 from Diodes Incorporated is a 1A, fixed-output (1.0V), ultra-low dropout linear regulator in U-DFN3030-8 (Type E) package with enable control, ±1% output accuracy, 360mV dropout at 1A (for 3.3V version; 1.0V variant exhibits ~710mV at 300mA), and 60µA typical quiescent current. It integrates current limit (1.5A), thermal shutdown (150°C), and fold-back short-circuit protection (400mA), targeting power rails in portable audio systems, LCD-TVs, and set-top boxes.

For engineers reviewing the AP7361C-10FGE-7 datasheet, AP7361C-10FGE-7 pinout, AP7361C-10FGE-7 application, or AP7361C-10FGE-7 equivalent, key selection criteria include dropout voltage at 1.0V output, EN logic thresholds (VIH = 1.0V min), stability with ≥2.2µF MLCC output capacitors, and thermal resistance (θJA = 70°C/W) for compact PCB layouts.

Technical Context

The AP7361C-10FGE-7 implements a PMOS pass transistor architecture enabling ultra-low dropout operation and high PSRR (75dB @ 1kHz). Its internal 0.8V band-gap reference and error amplifier regulate output via feedback to the ADJ/NC pin - unused in fixed 1.0V configuration but retained as no-connect in U-DFN3030-8.

Enable functionality is implemented with active-high EN pin (VIH ≥ 1.0V, VIL ≤ 0.3V), pull-down resistor (3.0MΩ), and leakage <0.1µA. Protection circuitry includes fold-back current limiting (400mA short-circuit clamp) and thermal shutdown with 20°C hysteresis, ensuring robustness under fault conditions without external components.

Key Specifications

Pinout & Package

AP7361C-10FGE-7 uses the U-DFN3030-8 (Type E) package: 3.0mm × 3.0mm × 0.55mm body, exposed thermal pad (Pin 4), matte tin-plated leads, moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-1002E/MB and XC6210B102MR-G, AP7361C-10FGE-7 uniquely balances 1A capability, 710mV dropout at 300mA, 60µA IQ, integrated EN, and full thermal/current protection - making it optimal for compact, battery-aware consumer electronics where reliability and moderate power coexist.

Availability

AP7361C-10FGE-7 is available at Aetrix Electronics and suitable for LCD-TV logic supplies, portable audio power rails, set-top box SoC I/O domains, and battery-powered sensor hubs requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for AP7361C-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 company specializing in discrete, analog, and mixed-signal solutions, with design, manufacturing, and test facilities across Asia and the Americas.

The AP7361C belongs to Diodes' high-performance LDO portfolio targeting space-constrained, battery-sensitive applications - designed to deliver precision regulation, ultra-low IQ, and robust fault protection in consumer, computing, and industrial equipment.

FAQ

What is the minimum input voltage required for AP7361C-10FGE-7 to maintain 1.0V output at 1A?

The AP7361C-10FGE-7 requires VIN ≥ VOUT + VDROPOUT. At 1A, dropout is not explicitly specified for 1.0V output in the datasheet; however, at 300mA it is 710mV typ. Extrapolating conservatively and referencing absolute max ratings, minimum functional VIN is 1.71V. For guaranteed 1A operation, Diodes recommends VIN ≥ 2.2V per recommended operating conditions.

Can AP7361C-10FGE-7 operate without an output capacitor?

No. The datasheet mandates a minimum 2.2µF ceramic output capacitor for stability. Omitting it risks oscillation, poor transient response, and potential device failure. The capacitor must be placed adjacent to OUT and GND pins, and MLCCs are explicitly validated for stability across temperature and bias conditions.

Is the EN pin internally pulled down on AP7361C-10FGE-7?

Yes. The EN pin features an internal 3.0MΩ pull-down resistor, ensuring the regulator remains off during power-up until a valid logic-high signal (>1.0V) is applied. This eliminates the need for an external pull-down in most designs, simplifying bring-up and preventing unintended activation.

How does thermal performance differ between U-DFN3030-8 and TO252 packages for AP7361C?

U-DFN3030-8 (Type E) has θJA = 70°C/W with proper thermal pad layout, while TO252 (DPAK) is rated at 95°C/W. This 25°C/W difference means the U-DFN package dissipates heat ~35% more efficiently under identical conditions, allowing higher ambient temperatures or longer 1A duty cycles before triggering thermal shutdown at 150°C.