Diodes Incorporated AP2114H-2.5TRG1

Overview

AP2114H-2.5TRG1 from BCD Semiconductor Manufacturing Limited is a fixed-output 2.5V, 1A CMOS low-dropout linear regulator with enable control, designed for stable local power regulation in noise-sensitive analog and mixed-signal circuits. It delivers ±1.5% output accuracy, 450mV typical dropout at 1A, 30μVRMS output noise, and operates across –40°C to +85°C ambient temperature.

For engineers reviewing the AP2114H-2.5TRG1 datasheet, AP2114H-2.5TRG1 pinout, AP2114H-2.5TRG1 application, or AP2114H-2.5TRG1 equivalent, key selection criteria include guaranteed 1A load capability, low-noise performance for ADC/DAC reference supplies, thermal shutdown protection, and compatibility with 4.7μF ceramic output capacitors in SOT-223 packaging.

Technical Context

The AP2114H-2.5TRG1 integrates a precision bandgap reference, error amplifier, PMOS pass transistor, and foldback current-limit protection. Its CMOS architecture enables ultra-low quiescent current (60μA) independent of output voltage setting.

Enable logic (VIH = 1.5V, VIL = 0.4V) controls regulator state with 20μs startup time and internal 3MΩ pull-down on EN. Thermal shutdown activates at 160°C with 25°C hysteresis, and output discharge occurs via 60Ω internal resistor when disabled.

Key Specifications

Pinout & Package

AP2114H-2.5TRG1 uses the SOT-223 package (3-pin, exposed thermal pad), optimized for low thermal resistance (θJA = 128°C/W, θJC = 50.9°C/W) and board-level heat dissipation without heatsinks.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1703T-2502E/MB and XC6219B252MR-G, AP2114H-2.5TRG1 uniquely combines 1A continuous output, ±1.5% accuracy, integrated thermal/fault protection, and SOT-223 thermal performance-making it suitable for higher-power, reliability-critical analog and mixed-signal systems.

Availability

AP2114H-2.5TRG1 is available at Aetrix Electronics and suitable for LCD monitor power rails, FPGA I/O supplies, digital audio DAC references, and portable medical sensor nodes requiring stable component supply, RoHS-compliant green packaging, and long-term production continuity.

Supply support for AP2114H-2.5TRG1 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

BCD Semiconductor Manufacturing Limited is a China-based fabless semiconductor company specializing in high-performance analog and power management ICs, with design centers in Shanghai and Shenzhen.

The AP2114 series targets cost-sensitive, high-volume consumer and industrial applications requiring reliable, low-noise LDO regulation-particularly in displays, set-top boxes, and embedded systems where thermal efficiency and small footprint are critical.

FAQ

What is the minimum input voltage required for AP2114H-2.5TRG1 to maintain regulation at 1A load?

The AP2114H-2.5TRG1 requires VIN ≥ VOUT + VDROP. With 450mV typical dropout at 1A, minimum input is 2.95V. The datasheet specifies 3.5V test condition for 1A performance, and absolute minimum operating VIN is 2.5V per Recommended Operating Conditions - but regulation margin is reduced below 2.95V.

Can AP2114H-2.5TRG1 operate with a 2.2μF ceramic output capacitor?

No. The datasheet explicitly requires ≥4.7μF ceramic (or equivalent tantalum/aluminum) output capacitance for stability. Using 2.2μF risks oscillation, poor transient response, and potential output overvoltage during load steps - confirmed by stability analysis in Section 4 of the datasheet.

Does AP2114H-2.5TRG1 require an input capacitor, and if so, what value and type?

Yes - a minimum 4.7μF ceramic input capacitor is recommended and placed within 5mm of VIN and GND pins. This reduces input ripple, improves PSRR, and prevents instability due to PCB trace inductance; aluminum or tantalum types are acceptable but ceramic offers lowest ESR and best high-frequency filtering.

Is the EN pin internally pulled down, and what is the maximum allowable leakage current on EN?

Yes - the EN pin has an internal 3.0MΩ pull-down resistor, ensuring default shutdown on power-up. Maximum leakage into EN is specified as ≤100nA in the OFF state; exceeding this may cause unintended activation. External pull-up resistors should be ≤100kΩ to guarantee VIH ≥1.5V across temperature.