Diodes Incorporated AP2114DA-1.2TRG1

Overview

AP2114DA-1.2TRG1 from BCD Semiconductor Manufacturing Limited is a fixed-output 1.2 V, 1 A CMOS low-dropout linear regulator with enable control, designed for stable power delivery in space-constrained consumer electronics. It delivers ±1.5% output accuracy, 450 mV typical dropout at 1 A (for 3.3 V version; 1.2 V version specified at 1.2–1.3 V dropout), and ultra-low 30 μVRMS output noise-critical for noise-sensitive analog/RF circuitry in LCD monitors and STB power rails.

For engineers reviewing the AP2114DA-1.2TRG1 datasheet, AP2114DA-1.2TRG1 pinout, AP2114DA-1.2TRG1 application, or AP2114DA-1.2TRG1 equivalent, key selection criteria include guaranteed 1 A load capability under 2.5 V input, thermal shutdown at 160 °C, EN logic compatibility (VIH = 1.5 V), and stability with 4.7 μF ceramic output capacitors.

Technical Context

The AP2114DA-1.2TRG1 implements a CMOS-based LDO architecture with internal voltage reference (0.8 V for adjustable variants), fold-back short-circuit protection (50 mA limit), and thermal shutdown with 25 °C hysteresis. Its enable input supports active-high logic control with 3 MΩ internal pull-down resistor and 60 Ω VOUT discharge path when disabled.

It operates across –40 °C to +85 °C ambient, supports input voltages from 2.5 V to 6.0 V, and maintains regulation with line regulation of 0.02 %/V (typ) and load regulation of 0.2 %/A (typ) over 1 mA–1 A output range-enabling reliable operation in variable-input systems like multi-rail DC-DC post-regulation stages.

Key Specifications

Pinout & Package

AP2114DA-1.2TRG1 uses the TO-252-2 (DA) package: a 3-pin surface-mount DPAK variant with exposed thermal pad (pin 2 = VOUT, pin 1 = GND, pin 3 = VIN). Pin 2 serves as both output and thermal conduction path; pins 1 and 3 are electrically isolated GND and VIN terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1703T-1202E/MB and XC6219B122MR-G, AP2114DA-1.2TRG1 uniquely combines 1 A output, ±1.5% accuracy, and 30 μVRMS noise in a thermally optimized TO-252-2 (DA) package-making it the only viable option for high-current, low-noise display power applications with 2.5 V input headroom.

Availability

AP2114DA-1.2TRG1 is available at Aetrix Electronics and suitable for LCD monitor power rails, set-top box core logic supplies, and smart TV timing controller boards requiring stable component supply, RoHS-compliant green packaging, and tape-and-reel delivery for SMT production.

Supply support for AP2114DA-1.2TRG1 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 ISO 9001-certified quality systems and AEC-Q100-qualified automotive products.

The AP2114 product line targets cost-sensitive, high-volume consumer electronics requiring robust, low-noise LDO regulation-specifically engineered for LCD/LED display modules, digital media adapters, and STB platforms demanding 1 A output in compact packages.

FAQ

What is the minimum input voltage required for AP2114DA-1.2TRG1 to maintain regulation at 1 A load?

The AP2114DA-1.2TRG1 requires a minimum input voltage of 2.5 V per recommended operating conditions. At 1 A load, its maximum dropout is 1.3 V, so VIN must be ≥2.5 V to sustain 1.2 V output. Operation below 2.5 V risks dropout and unregulated output, especially at elevated temperatures.

Can AP2114DA-1.2TRG1 be used with aluminum electrolytic output capacitors?

Yes-the datasheet explicitly guarantees stability with 4.7 μF aluminum electrolytic, ceramic, or tantalum capacitors. Aluminum types must meet ESR ≤ 1 Ω and ripple current rating ≥ 1 A; ceramic types require X5R/X7R dielectric with ≥10 % voltage derating at 1.2 V.

Does AP2114DA-1.2TRG1 require an external pull-up resistor on the EN pin?

No. The EN pin has an internal 3 MΩ pull-down resistor and accepts direct connection to 1.8 V or 3.3 V GPIO. An external pull-up is unnecessary unless system-level power sequencing mandates default-enable behavior during power-up before controller initialization.

How does the VOUT discharge function operate during shutdown?

When EN is driven low, an internal 60 Ω switch connects VOUT to GND, discharging output capacitance with τ ≈ 60 Ω × C_OUT. For a 4.7 μF ceramic cap, discharge time to 10 % of VOUT is ~650 μs-ensuring rapid, controlled ramp-down to prevent latch-up in downstream logic.