Diodes Incorporated AP7363-15E-13

Overview

AP7363-15E-13 from Diodes Incorporated is a 1.5A fixed-output (1.5V) ultra-low dropout linear regulator in SOT223-3L package, featuring 190mV dropout at full load, 0.5mA quiescent current, and stable operation with 10µF ceramic input/output capacitors. It delivers regulated power to FPGA I/O rails and ASIC cores in printers, routers, and STBs under 2.2–5.5V input.

For engineers reviewing the AP7363-15E-13 datasheet, AP7363-15E-13 pinout, AP7363-15E-13 application, or AP7363-15E-13 equivalent, key selection criteria include dropout voltage at 1.5A, thermal shutdown threshold (170°C), ground pin current (1.2mA max), and compatibility with low-ESR ceramic output capacitors without stability constraints.

Technical Context

The AP7363-15E-13 uses an internally compensated feedback loop with a 0.605V reference voltage, enabling stable regulation across temperature (-40°C to +85°C ambient) without external compensation components. Its architecture integrates current-limit protection (3.7A short-circuit peak) and thermal shutdown with 10°C hysteresis.

It operates as a fixed-output LDO with no ADJ pin connection required; the SOT223-3L package features a thermally enhanced tab electrically tied to GND, supporting up to 105.7°C/W junction-to-ambient thermal resistance on standard PCB layouts.

Key Specifications

Pinout & Package

SOT223-3L package: 3-pin surface-mount device with exposed thermal tab (electrically connected to GND), optimized for moderate-power LDO applications requiring PCB-area efficiency and thermal performance without complex layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1703T-1502E/MB and TLS850F1TAV50, the AP7363-15E-13 uniquely satisfies 1.5A continuous load, 190mV dropout, and SOT223 thermal performance in a single, non-automotive-qualified component - making it optimal for cost-sensitive, high-current industrial embedded designs.

Availability

AP7363-15E-13 is available at Aetrix Electronics and suitable for FPGA I/O power, ASIC core supply, and SMPS post-regulation requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for AP7363-15E-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 ICs, with emphasis on power management, signal integrity, and protection solutions.

The AP7363 belongs to Diodes' high-current LDO family designed specifically for low-dropout, low-noise regulation in space-constrained industrial and computing applications where reliability and thermal robustness are critical.

FAQ

What is the maximum allowable input voltage for AP7363-15E-13?

The absolute maximum input voltage is +6.0V, but the recommended operating range is 2.2V to 5.5V. Exceeding 5.5V risks violating safe operating area limits and may trigger thermal shutdown prematurely, especially at high ambient temperatures or full load. Operation above 5.5V voids guaranteed specifications per DS35059 Rev. 10-2.

Does AP7363-15E-13 require an external resistor divider for output setting?

No. The "-15" suffix denotes a factory-trimmed fixed 1.5V output version; the ADJ pin is not bonded out in this variant. Pin 2 is GND, pin 1 is OUT, and pin 3 is IN - no external resistors are needed, simplifying layout and reducing BOM cost versus adjustable versions.

Can AP7363-15E-13 be used with polymer tantalum output capacitors?

Yes. The AP7363 is explicitly characterized as stable with "any type of capacitor" including polymer tantalum, ceramic, and aluminum electrolytic - thanks to its internal compensation architecture. No minimum ESR requirement exists, unlike traditional LDOs that rely on capacitor ESR for phase margin.

What is the thermal pad connection requirement for SOT223 package?

The exposed thermal tab (pin 2/GND) must be soldered to a dedicated GND copper pour of ≥100 mm² for optimal thermal performance. It is electrically connected to GND and serves as the primary heat dissipation path; using it as the sole GND connection is insufficient - a separate low-impedance GND trace to the main ground plane is mandatory.