Diodes Incorporated AP7363-HA-7

Overview

AP7363-HA-7 from Diodes Incorporated is a 1.5A adjustable-output ultra-low dropout linear regulator in U-DFN2030-8 package, featuring 190mV dropout at full load, 0.6V–5.0V output adjustability, and 0.5mA typical quiescent current. It delivers stable power to FPGA I/O rails, ASIC cores in routers and STBs, and low-voltage microprocessor subsystems requiring fast transient response and minimal input–output voltage margin.

For engineers reviewing the AP7363-HA-7 datasheet, AP7363-HA-7 pinout, AP7363-HA-7 application, or AP7363-HA-7 equivalent, key selection criteria include dropout voltage at 1.5A, thermal shutdown threshold (170°C), ADJ pin reference voltage (0.605V), and compatibility with 10µF ceramic input/output capacitors without ESR constraints.

Technical Context

The AP7363-HA-7 uses an internal band-gap reference (0.605V ±21mV) and error amplifier to regulate output via external resistor divider on the ADJ pin. Its pass element is optimized for ultra-low dropout (190mV typ. at 1.5A, V_OUT = 2.5V) and low ground current (1.0–1.2mA).

It integrates current-limit protection (3.7A short-circuit peak), thermal shutdown (170°C trip, 10°C hysteresis), and internal compensation enabling stability with any capacitor type - including 10µF ceramic - eliminating ESR dependency and simplifying layout for portable and space-constrained designs.

Key Specifications

Pinout & Package

AP7363-HA-7 is housed in a thermally enhanced U-DFN2030-8 package (2.0mm × 3.0mm × 0.6mm) with exposed thermal pad (EP) electrically connected to GND; recommended soldered to ≥25mm² copper area for θ_JA = 85°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable LDO applications.

Compared with XC6210B182MR-G and RT9013-18GB, AP7363-HA-7 uniquely combines 1.5A capability, 190mV dropout, and full fault protection in a thermally optimized 2×3mm DFN - making it the only viable choice for high-density FPGA/ASIC power delivery where current, thermal margin, and transient performance are jointly constrained.

Availability

AP7363-HA-7 is available at Aetrix Electronics and suitable for FPGA I/O rail regulation, ASIC core powering in networking equipment, and SMPS post-regulation in medical and industrial instrumentation requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.

Supply support for AP7363-HA-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 ICs, with emphasis on power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The AP7363 belongs to Diodes' high-performance LDO family designed specifically for low-dropout, high-current, and low-noise applications in FPGA, ASIC, and DSP power domains - prioritizing thermal robustness, transient fidelity, and capacitor flexibility.

FAQ

What is the maximum output current and corresponding dropout voltage for AP7363-HA-7?

The AP7363-HA-7 delivers up to 1.5A continuous output current. At this load, its typical dropout voltage is 190mV when V_OUT = 2.5V and T_A = +25°C. The maximum guaranteed dropout is 240mV under those conditions, rising to 280mV over temperature. This enables operation down to V_IN = V_OUT + 0.28V in worst-case thermal scenarios.

Can AP7363-HA-7 be used with ceramic output capacitors only?

Yes - AP7363-HA-7 is explicitly designed for unconditional stability with ceramic, tantalum, or polymer capacitors of any ESR value. Its internal compensation provides ≥90° phase margin with a 10µF ceramic output capacitor, eliminating the need for minimum-ESR requirements or damping networks common in older LDOs.

How does the ADJ pin function, and what resistor values are recommended?

The ADJ pin senses the feedback divider voltage, which must equal the internal 0.605V reference. Output voltage is calculated as V_OUT = 0.605V × (1 + R1/R2). To maintain reference stability, R2 must be ≤10kΩ; typical designs use R2 = 10kΩ and R1 = (V_OUT/0.605 − 1) × 10kΩ. For example, 1.8V output requires R1 ≈ 19.8kΩ.

Is thermal pad (EP) connection mandatory, and how should it be implemented?

Yes - the exposed pad (EP) is electrically connected to the die substrate and must be soldered to a ≥25mm² GND copper area for thermal performance (θ_JA = 85°C/W). It should be connected to system GND but not serve as the sole GND return path; the dedicated Pin 2 (GND) must carry signal return current to avoid noise coupling into the regulation loop.