Diodes Incorporated AP2114S-1.2TRG1

Overview

AP2114S-1.2TRG1 from BCD Semiconductor Manufacturing Limited is a fixed-output 1.2V, 1A CMOS low-dropout linear regulator with enable control and ±1.5% output accuracy, designed for stable power delivery in space-constrained applications. It features 450mV typical dropout at 1A (for 3.3V version), 30μVRMS output noise, 68dB PSRR at 1kHz, and operates across –40°C to +85°C ambient temperature.

For engineers reviewing the AP2114S-1.2TRG1 datasheet, AP2114S-1.2TRG1 pinout, AP2114S-1.2TRG1 application, or AP2114S-1.2TRG1 equivalent, key selection criteria include guaranteed 1A load capability, TO-263-3 thermal performance (θJC = 22°C/W), low quiescent current (60μA), fold-back short-circuit protection (50mA), and compatibility with 4.7μF ceramic, tantalum, or aluminum electrolytic output capacitors.

Technical Context

The AP2114S-1.2TRG1 implements a CMOS-based LDO architecture with internal voltage reference (0.8V for adjustable variants), precision error amplifier, and thermal shutdown circuitry. Its enable input (EN) provides logic-level control (VIH = 1.5V, VIL = 0.4V) for system power sequencing and standby mode with 0.01–1.0μA shutdown current.

It delivers regulated 1.2V output with ±1.5% initial accuracy and ±30ppm/°C temperature coefficient, supported by excellent line regulation (0.02%/V typ) and load regulation (0.2%/A typ). The device integrates fold-back current limiting and overtemperature shutdown (160°C trip, 25°C hysteresis) for robust fault protection.

Key Specifications

Pinout & Package

AP2114S-1.2TRG1 uses the TO-263-3 (D²PAK) package with exposed thermal pad, optimized for high-current thermal management. 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 TPS7A4700RGWR and MCP1703T-1202E/MB, AP2114S-1.2TRG1 uniquely balances 1A output, enable functionality, TO-263-3 thermal performance, and 30μVRMS noise-making it optimal for mid-power embedded systems requiring both robustness and signal integrity.

Availability

AP2114S-1.2TRG1 is available at Aetrix Electronics and suitable for smart display power, industrial MCU core rails, set-top box SoC bias, and automotive infotainment modules requiring stable component supply, RoHS/Green compliance, and long-term production continuity.

Supply support for AP2114S-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 design centers in Shanghai and Shenzhen.

The AP2114 product line targets cost-sensitive, high-volume consumer and industrial applications requiring reliable, low-noise, enable-capable LDOs in multiple package options-including TO-263-3 for thermal-demanding use cases.

FAQ

What is the minimum input voltage required for AP2114S-1.2TRG1 to regulate 1.2V output at full 1A load?

The datasheet specifies a minimum input voltage of 2.5V for full 1A operation. At this condition, the maximum dropout is 1.3V, meaning VIN must be ≥2.5V to maintain regulation. Below 2.5V, output voltage drops proportionally and regulation is lost; operation below 2.5V is outside recommended conditions and may trigger thermal shutdown under load.

Can AP2114S-1.2TRG1 be used with a 10μF ceramic output capacitor instead of the specified 4.7μF?

Yes - the device is stable with 4.7μF or larger ceramic, tantalum, or aluminum electrolytic capacitors. A 10μF ceramic capacitor improves transient response and reduces output impedance across frequency, provided its ESR remains within the stable range (typically <100mΩ). No compensation changes are needed.

Does AP2114S-1.2TRG1 require an input capacitor, and if so, what value and type are recommended?

Yes - a minimum 4.7μF ceramic input capacitor is required, placed as close as possible to the VIN and GND pins. This stabilizes the input supply against source impedance and prevents oscillation during load transients. Aluminum or tantalum capacitors may be used if bulk capacitance is needed, but ceramic is preferred for high-frequency decoupling.

How does the EN pin behave during power-up, and is an external pull-up resistor necessary?

The EN pin has an internal 3MΩ pull-down resistor, ensuring default shutdown at power-up until actively driven high (>1.5V). No external pull-up is required for basic operation. However, if system timing demands controlled enable sequencing, a weak external pull-up (e.g., 100kΩ) can be added to guarantee deterministic startup behavior before other rails stabilize.