Diodes Incorporated AP130-28YL-13

Overview

AP130-28YL-13 from Diodes Incorporated is a fixed 2.8V, 300mA low-dropout linear regulator in SOT89-3L package, featuring 400mV dropout at full load, ±2% output accuracy, and 50µA quiescent current. It integrates PMOS pass element with no base current draw, thermal shutdown, and current-limit protection. Designed for battery-powered peripherals including LAN cards and wireless modules where stable low-voltage rail and low standby power are critical.

For engineers reviewing the AP130-28YL-13 datasheet, AP130-28YL-13 pinout, AP130-28YL-13 application, or AP130-28YL-13 equivalent, key selection criteria include dropout voltage at 300mA, output accuracy over temperature, PSRR at 100Hz, thermal resistance (θJA = 100°C/W), and compatibility with 10µF minimum output capacitance for stability.

Technical Context

The AP130-28YL-13 employs a PMOS pass transistor architecture enabling zero gate-drive current and inherently low quiescent consumption. Its error amplifier uses a bandgap reference to regulate output against line, load, and temperature variations with ±2% initial accuracy and 50ppm/°C drift.

Protection circuitry includes fold-back current limiting triggered below 1.05V output and thermal shutdown activated above +125°C junction temperature. The device requires ≥10µF ceramic or tantalum output capacitor for phase margin compliance and exhibits 58dB PSRR at 100Hz under 100mA load.

Key Specifications

Pinout & Package

SOT89-3L package: 3-pin surface-mount, thermally enhanced plastic outline with exposed pad (not electrically connected), footprint per Diodes AP02007; 4.5mm × 2.5mm × 1.5mm body, 1.0mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP130-28YL-13, AP2202K-2.8TRG1 trades thermal safety for smaller footprint and controllability, while MCP1700T-2802E/TT sacrifices output current headroom to achieve nanoamp quiescent draw-making AP130-28YL-13 optimal for 300mA, thermally demanding, battery-backed applications requiring integrated protection.

Availability

AP130-28YL-13 is available at Aetrix Electronics and suitable for wireless communication modules, LAN card power rails, and battery-powered peripherals requiring stable component supply with guaranteed 300mA output and integrated thermal/current protection.

Supply support for AP130-28YL-13 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, computing, and consumer markets.

The AP130 series belongs to Diodes' LDO linear regulator product line, engineered for cost-sensitive, space-constrained applications needing robust protection, low IQ, and wide-input compatibility in portable and peripheral electronics.

FAQ

What is the minimum output capacitance required for AP130-28YL-13 stability?

The AP130-28YL-13 requires a minimum 10µF output capacitor (ceramic or tantalum) connected between OUT and GND to ensure phase margin and prevent oscillation. Lower values risk instability under load transients, especially with ESR < 100mΩ capacitors. Diodes recommends using X5R/X7R ceramics with 10µF–22µF range and 6.3V rating.

Can AP130-28YL-13 operate from a 3.0V input at 300mA load?

No. With a 400mV typical dropout voltage, AP130-28YL-13 requires ≥3.2V input to maintain 2.8V output at 300mA. At 3.0V input, the device enters dropout, causing unregulated output sag-measured as ~2.6V under those conditions. For 3.0V input systems, select a lower-VOUT variant or higher-current LDO with sub-200mV dropout.

Does AP130-28YL-13 include reverse polarity protection?

No. The AP130-28YL-13 lacks internal reverse-voltage protection. Applying negative voltage to IN or OUT relative to GND may damage the PMOS pass transistor or bandgap circuitry. External protection-such as a series Schottky diode or dedicated reverse-polarity IC-is required in systems prone to incorrect battery insertion or hot-swap events.

How does the fold-back current limit behave during short-circuit conditions?

Under short-circuit (VOUT < 1.05V), AP130-28YL-13 reduces output current to 150–300mA (typical), lowering power dissipation and junction temperature rise. This fold-back behavior prevents thermal runaway seen in constant-current limiters, allowing safe indefinite short-circuit operation as long as ambient temperature and PCB copper area keep θJA within 100°C/W limits.