Diodes Incorporated AZ1117CH2-5.0TRG1

Overview

AZ1117CH2-5.0TRG1 from Diodes Incorporated is a fixed-output 5.0V low-dropout linear regulator in SOT223 package, delivering up to 1.35A output current with ±1% output voltage accuracy, 1.3V typical dropout at 0.8A, and 70dB PSRR at 120Hz - optimized for USB devices and PC motherboard power rails where input headroom and transient response are constrained.

For engineers reviewing the AZ1117CH2-5.0TRG1 datasheet, AZ1117CH2-5.0TRG1 pinout, AZ1117CH2-5.0TRG1 application, or AZ1117CH2-5.0TRG1 equivalent, this page provides verified pin functions, thermal shutdown behavior, ceramic capacitor compatibility (ESR <20Ω), junction temperature range (–20°C to +125°C), and real-world load/line regulation performance per DS36676 Rev. 5-2.

Technical Context

The AZ1117CH2-5.0TRG1 integrates a trimmed bandgap reference and on-chip thermal shutdown circuitry, with current-limit protection set at 1.35A typical. Its architecture supports stable operation with low-ESR ceramic capacitors ≥10µF on the output.

It operates across –20°C to +125°C junction temperature, features 0.003% RMS output noise (10Hz–10kHz), and maintains 70dB ripple rejection at 120Hz with 22µF output capacitance - confirming suitability for noise-sensitive analog and digital subsystems requiring clean 5.0V bias.

Key Specifications

Pinout & Package

Package: SOT223 (3-pin, surface-mount, exposed thermal pad). Pin 1 = INPUT, Pin 2 = OUTPUT, Pin 3 = GND. The exposed pad (Pin 4, thermally connected to GND) must be soldered to PCB copper for thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-5002E/MB and TLV1117-50CDCYR, the AZ1117CH2-5.0TRG1 uniquely balances 1.35A capability, ±1% accuracy, and SOT223 thermal performance - making it optimal for space-constrained 5V systems demanding both precision and robustness.

Availability

AZ1117CH2-5.0TRG1 is available at Aetrix Electronics and suitable for USB devices, PC motherboards, DVD players, and add-on cards requiring stable component supply with guaranteed long-term manufacturability.

Supply support for AZ1117CH2-5.0TRG1 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, with ISO 9001 and IATF 16949 certified facilities.

The AZ1117C series targets cost-sensitive, high-volume power management applications in computing, consumer, and industrial equipment - emphasizing low dropout, thermal resilience, and ceramic capacitor compatibility.

FAQ

What is the minimum input voltage required for stable 5.0V output at 1.0A?

The AZ1117CH2-5.0TRG1 requires VIN ≥ 6.3V at 1.0A load, based on its 1.3V typical dropout voltage (DS36676 Rev. 5-2, p.7). At worst-case 1.4V dropout (TO252-2 Series), VIN must be ≥6.4V. Input below this threshold causes output collapse or regulation loss.

Can the AZ1117CH2-5.0TRG1 be used with a 4.7µF output capacitor?

No. The datasheet mandates a minimum 10µF output capacitor with ESR <20Ω for stability (DS36676 Rev. 5-2, p.3, Note 4). Using 4.7µF risks oscillation or poor transient response, especially under load steps - confirmed by stability testing across temperature and line/load conditions.

Does the SOT223 package require a heatsink for 1.35A operation?

At 1.35A continuous load with 5V output and 12V input (7W dissipation), the SOT223 θJA of 125°C/W (DS36676 Rev. 5-2, p.4) yields ~875°C rise - impossible without thermal relief. A 250mm² copper pour with 4×0.5mm vias to inner layers is mandatory; standalone SOT223 cannot sustain 1.35A without derating.

Is the AZ1117CH2-5.0TRG1 qualified for automotive applications?

No. While rated for –20°C to +125°C junction temperature, the AZ1117CH2-5.0TRG1 is not AEC-Q100 qualified. Diodes Incorporated explicitly states automotive-grade versions require separate PPAP-capable part numbers and IATF 16949 manufacturing (DS36676 Rev. 5-2, p.1).