Diodes Incorporated AP130-25YRG-13

Overview

AP130-25YRG-13 from Diodes Incorporated is a 300mA fixed-output 2.5V low-dropout linear regulator in SOT89R-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 fold-back short-circuit protection-designed for battery-powered peripherals requiring stable low-noise voltage regulation.

For engineers reviewing the AP130-25YRG-13 datasheet, AP130-25YRG-13 pinout, AP130-25YRG-13 application, or AP130-25YRG-13 equivalent, key selection criteria include dropout performance at 300mA, thermal resistance (θ_JA = 100°C/W), green RoHS-compliant packaging, and compatibility with 10µF minimum output capacitance for stability.

Technical Context

The AP130-25YRG-13 uses an internal PMOS pass transistor with R_ON = 1.5Ω, enabling low dropout and zero gate-drive current. Its error amplifier references a bandgap voltage (1.08V) to regulate output precisely across load and line variations.

It implements dual protection: current-limit threshold of 350–450mA (measured at V_IN = 5V, V_OUT = 0V) and thermal shutdown triggered at T_J ≥ 125°C. Short-circuit fold-back reduces I_SC to 150–300mA when V_OUT < 1.05V.

Key Specifications

Pinout & Package

SOT89R-3L package: 3-pin surface-mount, exposed thermal pad (pin 2), lead-free and green molding compound compliant with RoHS Directive 2002/95/EC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2202K-2.5TRG1 and MCP1700T-2502E/TT, the AP130-25YRG-13 delivers superior dropout performance at full load and higher current capability, making it optimal for applications demanding both low-voltage operation and robust transient handling without sacrificing thermal margin.

Availability

AP130-25YRG-13 is available at Aetrix Electronics and suitable for wireless communication modules, optical disc drive power rails, and PC peripheral interfaces requiring stable component supply with RoHS-compliant green packaging and traceable sourcing.

Supply support for AP130-25YRG-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 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-effective, high-reliability voltage regulation in battery-powered and space-constrained applications with strict thermal and efficiency requirements.

FAQ

What is the minimum output capacitance required for stability with AP130-25YRG-13?

The AP130-25YRG-13 requires a minimum 10µF output capacitor-tantalum or aluminum electrolytic-with ESR between 0.1Ω and 1Ω. Ceramic capacitors alone are insufficient due to ultra-low ESR causing phase margin loss; a 10µF ceramic + 1Ω series resistor meets stability requirements per DS31027 Rev. 8-2 Section 6.

Does AP130-25YRG-13 support reverse polarity protection?

No. The AP130-25YRG-13 lacks integrated reverse-voltage protection. Applying reverse polarity (e.g., V_OUT > V_IN) may cause latch-up or permanent damage. External protection-such as a series Schottky diode or P-channel MOSFET-must be added if reverse input is possible in the system.

Can AP130-25YRG-13 operate with input voltage below 2.7V?

No. Absolute minimum input voltage is 2.7V per Recommended Operating Conditions. Operation below this violates specification and risks loss of regulation or undefined behavior. At 2.5V input, even with 2.5V output, the device cannot sustain 300mA load due to insufficient headroom for internal circuitry biasing.

Is thermal pad connection mandatory for AP130-25YRG-13 in SOT89R-3L?

Yes. Pin 2 (IN) in SOT89R-3L is electrically connected to the exposed thermal pad. This pad must be soldered to a PCB copper pour sized per Diodes' AP02007 land pattern (4.40×2.90mm) to achieve θ_JA = 100°C/W. Omitting thermal pad connection degrades thermal performance by >40°C/W and risks thermal shutdown under 200mA load.