Diodes Incorporated AP2114HA-3.3TRG1

Overview

AP2114HA-3.3TRG1 from BCD Semiconductor Manufacturing Limited is a fixed-output 3.3V, 1A CMOS low-dropout linear regulator with enable control, ±1.5% output accuracy, 450mV typical dropout at 1A, and 30μVRMS output noise. It delivers stable power to core logic rails in LCD monitors and STB mainboards where low noise and tight regulation are critical.

For engineers reviewing the AP2114HA-3.3TRG1 datasheet, AP2114HA-3.3TRG1 pinout, AP2114HA-3.3TRG1 application, or AP2114HA-3.3TRG1 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 AP2114HA-3.3TRG1 implements a CMOS-based LDO architecture with internal bandgap reference, error amplifier, and PMOS pass transistor. Its enable input (EN) controls regulator state via TTL-compatible logic levels (VIH = 1.5V, VIL = 0.4V), and foldback current limiting activates at 50mA during short-circuit events.

Thermal protection triggers at 160°C junction temperature with 25°C hysteresis, and the device maintains ±1.5% output accuracy over –40°C to +85°C ambient while supporting 4.7μF ceramic, tantalum, or aluminum electrolytic output capacitors without external compensation.

Key Specifications

Pinout & Package

AP2114HA-3.3TRG1 uses the SOT-223 (HA) package - a thermally enhanced 3-pin surface-mount variant with exposed thermal pad on the bottom side, optimized for PCB copper pour heat dissipation in space-constrained consumer applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700-3302E/TO and XC6206P332MR-G, AP2114HA-3.3TRG1 uniquely combines 1A output capability, enable functionality, and 30μVRMS noise in SOT-223 - making it the only viable choice for compact, high-current consumer display and media applications requiring both performance and board space efficiency.

Availability

AP2114HA-3.3TRG1 is available at Aetrix Electronics and suitable for LCD monitor power rails, set-top box mainboards, and smart TV audio subsystems requiring stable component supply, RoHS-compliant green packaging, and tape-and-reel delivery for automated assembly.

Supply support for AP2114HA-3.3TRG1 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 for consumer, industrial, and computing markets.

The AP2114 product line targets cost-sensitive, high-volume consumer electronics requiring robust, low-noise LDOs with flexible capacitor support and thermal resilience in compact packages.

FAQ

What is the minimum input voltage required for AP2114HA-3.3TRG1 to maintain regulation at 1A load?

The AP2114HA-3.3TRG1 requires VIN ≥ 3.75V to sustain 3.3V output at 1A, based on its 450mV typical dropout voltage (3.3V + 0.45V = 3.75V). The absolute maximum input is 6.0V per datasheet specifications, and operation below 2.5V is not guaranteed.

Can AP2114HA-3.3TRG1 be used with a 2.2μF ceramic output capacitor?

No - the datasheet specifies stability only with ≥4.7μF output capacitance, regardless of dielectric type. Using 2.2μF ceramic risks oscillation and degraded transient response due to insufficient phase margin; 4.7μF is mandatory for guaranteed stability.

Does AP2114HA-3.3TRG1 require an input capacitor, and if so, what value and type?

Yes - a minimum 4.7μF input capacitor is required, placed as close as possible to the VIN and GND pins. Ceramic capacitors are preferred for low ESR; tantalum or aluminum electrolytic may also be used, but must meet the 4.7μF minimum and low-impedance requirements across frequency.

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

The EN pin has an internal 3.0MΩ pull-down resistor, ensuring default shutdown at power-up until a valid high-level signal (≥1.5V) is applied. No external pull-up is required; however, if system-level sequencing demands controlled turn-on, a microcontroller GPIO or dedicated power-good signal should drive EN directly.