Diodes Incorporated AP2213D-3.0TRG1

Overview

AP2213D-3.0TRG1 from Diodes Incorporated is a fixed 3.0V, 500mA low-noise LDO regulator with 350mV dropout at full load, ±1% output accuracy, 75dB PSRR at 100Hz, and 1µA shutdown current. It integrates logic-compatible enable control, reverse-current protection, thermal shutdown, and over-current protection for battery-powered and RF-sensitive systems.

For engineers reviewing the AP2213D-3.0TRG1 datasheet, AP2213D-3.0TRG1 pinout, AP2213D-3.0TRG1 application, or AP2213D-3.0TRG1 equivalent, key selection criteria include dropout voltage under 500mA load, noise performance with 100pF BYP capacitor, thermal resistance in TO-252-2 (3), and compatibility with 1.0µF input / 2.2µF output capacitor configurations.

Technical Context

The AP2213D-3.0TRG1 employs a bandgap-referenced linear regulation architecture with internal current limiting and thermal foldback. Its enable input accepts CMOS/TTL logic levels (VIH ≥ 2.0V, VIL ≤ 0.4V) and directly controls internal pass transistor biasing without external pull-ups.

Low-noise operation relies on a dedicated BYP pin connected to a 100pF capacitor to stabilize the internal reference; omitting this capacitor increases output noise by >2× but improves startup time. Dropout behavior is characterized across -40°C to +125°C with guaranteed 700mV max at 500mA over temperature.

Key Specifications

Pinout & Package

AP2213D-3.0TRG1 is supplied in the TO-252-2 (3) surface-mount package, featuring exposed thermal pad for enhanced heat dissipation and RoHS-compliant matte tin plating per MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1703T-3002E/MB and NCP1117DT33RKG, the AP2213D-3.0TRG1 uniquely combines 500mA capability, sub-400mV dropout, integrated enable, reverse-current blocking, and 100pF-tuned low-noise operation-making it optimal for space-constrained, battery-fed, and RF-critical designs where all four attributes are simultaneously required.

Availability

AP2213D-3.0TRG1 is available at Aetrix Electronics and suitable for portable medical sensors, RF transceiver power rails, industrial PLC I/O modules, and automotive infotainment USB hubs requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for AP2213D-3.0TRG1 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, automotive, and consumer markets.

The AP2213 series belongs to Diodes' low-noise LDO portfolio, engineered specifically for noise-sensitive applications such as RF front-ends, precision analog circuits, and battery-powered portable electronics demanding ultra-low quiescent current and tight regulation.

FAQ

What is the minimum input voltage required for AP2213D-3.0TRG1 to maintain regulation at 500mA?

The minimum input voltage is 3.35V, calculated as VOUT + VDROP = 3.0V + 350mV. Below this, output voltage drops ≥1% from nominal. For robust PSRR and thermal margin, Diodes recommends VIN ≥ VOUT + 1V (i.e., ≥4.0V) across the full operating temperature range.

Can the BYP pin be left unconnected without compromising basic functionality?

Yes-leaving BYP open disables the internal reference bypass, increasing output noise to ~600nV/√Hz but improving startup time by ~3×. The regulator remains fully functional and stable with standard 2.2µF output capacitance; omit BYP only when noise is secondary to fast wake-up response.

Does AP2213D-3.0TRG1 require an external diode for reverse-voltage protection?

No-reverse-current protection is integrated. When VIN falls below VOUT (e.g., during input disconnect or brownout), the internal pass device blocks current flow from VOUT to VIN, eliminating need for external Schottky diode and associated forward-drop loss.

Is the TO-252-2 (3) package of AP2213D-3.0TRG1 thermally compatible with standard PCB layouts?

Yes-the TO-252-2 (3) package uses the exposed thermal pad as GND and primary heat path. With ≥100mm² of 2oz copper connected to the pad, it sustains 500mA at +85°C ambient without heatsink; θJA is specified at 90°C/W with JEDEC-standard 2-layer board.