Diodes Incorporated AP7361E-12FGE-7

Overview

AP7361E-12FGE-7 from Diodes Incorporated is a 1A fixed-output (1.2V), ultra-low dropout linear regulator in U-DFN3030-8 (Type E) package, featuring enable control, power-good monitoring, ±1% output accuracy, 360mV dropout at 1A (for 3.3V variant), and 60µA quiescent current. It delivers stable low-voltage bias for core logic and I/O rails in space-constrained portable and embedded systems.

For engineers reviewing the AP7361E-12FGE-7 datasheet, AP7361E-12FGE-7 pinout, AP7361E-12FGE-7 application, or AP7361E-12FGE-7 equivalent, key selection criteria include its 1.2V fixed output, PG open-drain threshold (89–95% VOUT), thermal shutdown at +150°C, EN logic-high activation, and compatibility with ≥2.2µF MLCC output capacitors.

Technical Context

The AP7361E-12FGE-7 integrates a PMOS pass element, band-gap reference, error amplifier, current-limit circuitry (1.5A typ), and thermal shutdown. Its fixed 1.2V output eliminates external resistor divider requirements while retaining full enable and power-good functionality.

It operates across 2.2V–6.0V input range with 70°C/W junction-to-ambient thermal resistance in U-DFN3030-8 (Type E), supports fast start-up (200µs typical ramp time), and maintains regulation down to zero load with no minimum current requirement.

Key Specifications

Pinout & Package

U-DFN3030-8 (Type E) package: 3.0mm × 3.0mm × 0.6mm body with exposed thermal pad; RoHS-compliant, halogen-free, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700-1202E/TO and XC6210B122MR-G, AP7361E-12FGE-7 uniquely combines 1A drive, EN+PG control, ±1% accuracy, and ultra-low dropout in a thermally enhanced DFN-making it optimal for sequenced, high-reliability embedded power delivery.

Availability

AP7361E-12FGE-7 is available at Aetrix Electronics and suitable for mobile device core power, industrial sensor node bias, set-top box memory interface, and LCD monitor logic rail applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AP7361E-12FGE-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 solutions for power management, signal integrity, and connectivity applications.

The AP7361E belongs to Diodes' high-performance LDO portfolio designed for space-constrained, thermally demanding applications in portable electronics, industrial controls, and consumer displays-emphasizing low dropout, precision output, and integrated protection.

FAQ

What is the minimum input voltage required for AP7361E-12FGE-7 to regulate 1.2V at 1A?

The minimum input voltage is determined by dropout: 500mV max at 1A for 1.2V output, so VIN(min) = 1.2V + 0.5V = 1.7V. However, the absolute minimum specified input is 2.2V per datasheet-this ensures guaranteed operation across temperature, process, and load variations. Operating below 2.2V may result in loss of regulation or specification compliance.

Can the PG pin be pulled up to a voltage higher than the input supply?

Yes-the PG pin is an open-drain output rated for up to 6V on the pull-up rail, which may exceed VIN. For example, a 3.3V-input AP7361E-12FGE-7 can use a 5V pull-up for PG, enabling direct interfacing with 5V logic or supervisors. The internal MOSFET sink limits PG low-state voltage to ≤0.4V at 5mA, ensuring clean logic-low signaling.

Is an external capacitor required on the ADJ pin for the AP7361E-12FGE-7?

No-AP7361E-12FGE-7 is the fixed 1.2V version; the ADJ pin is internally terminated and marked "ADJ/NC" in the pinout. It must be left unconnected (no capacitor, no resistor). External feedback components are only required for adjustable versions (e.g., AP7361E-ADJFGE-7), not this part number.

How does thermal performance change with PCB copper area in the U-DFN3030-8 (Type E) package?

θJA is specified at 70°C/W for a 2"×2" FR-4 board with minimum recommended pads and thermal vias to ground plane. Doubling the copper area and adding ≥4 thermal vias reduces θJA by ~15–20°C/W. Without adequate copper or vias, θJA may exceed 100°C/W-causing premature thermal shutdown at <500mA load. Layout adherence to Diodes' suggested pad dimensions is critical for rated 1A operation.