Diodes Incorporated AP130-35YRL-13

Overview

AP130-35YRL-13 from Diodes Incorporated is a 300mA fixed-output 3.5V low-dropout linear regulator in SOT89-3L package, featuring 400mV dropout at full load, ±2% output accuracy, and 50µA quiescent current. It integrates thermal shutdown, current limit with fold-back, and operates across 2.7V–5.5V input range for battery-powered peripherals and embedded I/O rails.

For engineers reviewing the AP130-35YRL-13 datasheet, AP130-35YRL-13 pinout, AP130-35YRL-13 application, or AP130-35YRL-13 equivalent, key selection criteria include dropout voltage under 300mA load, guaranteed output accuracy over temperature, thermal resistance (θJA = 100°C/W), and compatibility with 10µF minimum output capacitance for stability.

Technical Context

The AP130-35YRL-13 uses a PMOS pass transistor with 1.5Ω R_ON, eliminating base drive current and enabling ultra-low quiescent current. Its error amplifier compares a scaled output against a 1.08V bandgap reference to regulate voltage with fast transient response.

Protection circuitry includes thermal shutdown triggered at ~150°C junction temperature and current-limit fold-back that reduces short-circuit current to 150–300mA when V_OUT drops below 1.05V, preventing thermal runaway during fault conditions.

Key Specifications

Pinout & Package

SOT89-3L package: 3-pin surface-mount plastic package with exposed thermal pad (pin 2 connected to GND), optimized for power dissipation without heatsink. Dimensions: 4.5mm × 2.5mm × 1.5mm, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2202K-3.5TRG1 and MCP1700T-3502E/TT, the AP130-35YRL-13 delivers higher output current (300mA vs. ≤250mA), lower dropout (400mV vs. ≥600mV), and integrated fold-back protection-making it optimal for moderate-power, thermally constrained applications where reliability under overload is critical.

Availability

AP130-35YRL-13 is available at Aetrix Electronics and suitable for battery-powered wireless modules, USB peripheral power rails, and optical drive I/O interfaces requiring stable component supply with consistent parametric performance across production lots.

Supply support for AP130-35YRL-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, designed specifically for cost-sensitive, space-constrained applications needing reliable low-noise, low-quiescent-current regulation across wide input voltage ranges.

FAQ

What is the minimum output capacitance required for stability with AP130-35YRL-13?

A minimum 10µF ceramic capacitor must be placed between OUT and GND to ensure loop stability across all load and input conditions. This value is specified in the datasheet's Functional Descriptions section and verified in typical performance curves. Using less capacitance risks oscillation or poor transient response, especially under 300mA load steps.

Does AP130-35YRL-13 require an input bypass capacitor?

Yes - a minimum 1µF ceramic capacitor must be placed between IN and GND, located as close as possible to the IN pin. This suppresses high-frequency noise and prevents instability caused by source impedance from upstream regulators or batteries. The datasheet confirms this requirement in the Typical Application Circuit and Electrical Characteristics test conditions.

How does the current-limit fold-back function protect the device?

When output voltage drops below 1.05V (indicating short circuit or severe overload), the AP130-35YRL-13 reduces its output current to 150–300mA instead of sustaining 350–450mA. This fold-back behavior lowers power dissipation (P = V × I), preventing junction temperature from exceeding thermal shutdown threshold and avoiding permanent damage during sustained faults.

Is AP130-35YRL-13 compatible with lead-free reflow soldering profiles?

Yes - AP130-35YRL-13 is RoHS-compliant and qualified for standard lead-free reflow profiles, including peak temperatures up to 260°C. Its SOT89-3L package uses matte tin (Sn) plating and green molding compound, both certified per JEDEC J-STD-020D. The device withstands three reflow cycles without parameter shift or delamination.