Diodes Incorporated AP2114D-2.5TRG1

Overview

AP2114D-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 power delivery 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. Used in LCD monitor power rails where low noise and tight regulation are critical.

For engineers reviewing the AP2114D-2.5TRG1 datasheet, AP2114D-2.5TRG1 pinout, AP2114D-2.5TRG1 application, or AP2114D-2.5TRG1 equivalent, key selection criteria include dropout voltage at full load, PSRR at 1kHz, thermal shutdown threshold, EN logic thresholds, and compatibility with 4.7μF ceramic output capacitors.

Technical Context

The AP2114D-2.5TRG1 implements a CMOS-based LDO architecture with internal bandgap reference, foldback current limiting, and thermal shutdown (160°C). Its enable input supports active-high logic control with 1.5V VIH and 0.4V VIL thresholds, enabling precise system-level power sequencing.

It achieves 65dB PSRR at 1kHz under 100mA load and maintains ±30ppm/°C output voltage temperature coefficient. The device is stable with 4.7μF ceramic, tantalum, or aluminum electrolytic output capacitors-no ESR requirements-simplifying layout in space-constrained applications.

Key Specifications

Pinout & Package

AP2114D-2.5TRG1 uses the TO-252-2 (1) package - a 3-pin surface-mount DPAK variant with exposed drain pad for thermal dissipation. Pin 1 = GND, Pin 2 = VIN, Pin 3 = VOUT.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700-2502E/TO and TLS850B2TEV50, AP2114D-2.5TRG1 uniquely balances 1A capability, enable control, low noise, and TO-252 thermal performance - making it optimal for high-fidelity consumer display power rails where headroom, sequencing, and noise matter.

Availability

AP2114D-2.5TRG1 is available at Aetrix Electronics and suitable for LCD monitor power rails, set-top box AV processing, and industrial HMI displays requiring stable component supply, RoHS-compliant green packaging, and tape-and-reel delivery for SMT production.

Supply support for AP2114D-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 analog IC designer specializing in power management, LED drivers, and MOSFETs, with ISO 9001 and IATF 16949 certifications.

The AP2114 series targets cost-effective, high-reliability LDO applications in consumer displays and industrial electronics - emphasizing low noise, wide input range, and flexible capacitor compatibility without sacrificing thermal robustness.

FAQ

What is the minimum input voltage required for AP2114D-2.5TRG1 to maintain regulation at 1A load?

The minimum input voltage is 2.95V - calculated from the 2.5V nominal output plus 450mV typical dropout voltage. At 1A load and 25°C, regulation is maintained down to 2.95V; derating is required above 85°C due to increased dropout. Absolute maximum input is 6.0V per datasheet limits.

Can AP2114D-2.5TRG1 operate with a 2.2μF ceramic output capacitor?

No - the datasheet specifies stable operation only with ≥4.7μF ceramic, tantalum, or aluminum electrolytic capacitors. Using 2.2μF risks instability, overshoot, or oscillation due to insufficient phase margin; 4.7μF is the validated minimum for all load conditions and temperatures.

Does AP2114D-2.5TRG1 require an input capacitor, and if so, what value and type?

Yes - a minimum 4.7μF ceramic input capacitor is required, placed as close as possible to the VIN and GND pins. This suppresses high-frequency noise from upstream sources and prevents input voltage sag during load transients, ensuring stable regulation and preventing enable false triggering.

How does the internal VOUT discharge resistor function during shutdown?

When EN is pulled low, the internal 60Ω resistor connects VOUT to GND, actively discharging the output capacitor within microseconds. This prevents residual voltage from interfering with downstream logic states or causing unintended wake-up in systems requiring strict power sequencing and zero-volt hold-down.