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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated AP130-18WL-7

Name: AP130-18WL-7
Brand: Diodes Incorporated
SKU: AP130-18WL-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP130-18WL-7

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: AP130-18WL-7.pdf

Description:: IC REG LINEAR 1.8V 300MA SC59-3

Quantity:: RFQ Add To RFQ list

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Inventory:2,408

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Product details

Overview

AP130-18WL-7 from Diodes Incorporated is a 300mA fixed-output 1.8V low-dropout linear regulator in SC59 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 portable electronics requiring stable low-voltage rail generation.

For engineers reviewing the AP130-18WL-7 datasheet, AP130-18WL-7 pinout, AP130-18WL-7 application, or AP130-18WL-7 equivalent, key selection criteria include dropout voltage under 300mA load, guaranteed output accuracy across temperature, thermal resistance (θ_JA = 250°C/W), stability with 10µF output capacitor, and SC59 lead-free RoHS-compliant packaging.

Technical Context

The AP130-18WL-7 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 and load variations, with fast transient response achieved via internal compensation optimized for 10µF ceramic output capacitance.

Protection functions are fully integrated: current limit folds back during short-circuit events to limit power dissipation, while thermal shutdown activates at ~125°C junction temperature. The device operates across –40°C to +85°C ambient without derating up to 300mA when properly heatsinked per SC59 layout guidelines.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.8V ±2% at 1mA–300mA, ensuring stable core logic supply for 1.8V microcontrollers and memory interfaces.
Dropout Voltage	400mV typ. at 300mA, allowing operation down to 2.2V input-critical for single-cell Li-ion or two-cell alkaline systems.
Quiescent Current	50µA typ. at zero load, minimizing standby power loss in always-on battery applications like IoT sensors.
PSRR	58dB at 100Hz, suppressing ripple from noisy switcher outputs or shared DC-DC rails feeding mixed-signal circuits.
Load Regulation	±40mV over 1–300mA load range, maintaining tight voltage tolerance for sensitive analog peripherals.
Thermal Resistance θ_JA	250°C/W (SC59), defining maximum power dissipation (≈375mW at ΔT=94°C) before thermal shutdown triggers.

Pinout & Package

AP130-18WL-7 is housed in SC59 package (3-pin SOT-23 variant), measuring 2.90 × 1.30 × 1.00 mm, with gull-wing leads and RoHS-compliant matte-tin finish. Pin 1 = IN, Pin 2 = OUT, Pin 3 = GND (top view, left-to-right).

Pin/Terminal	Circuit Role	Design Meaning
1 (IN)	Input Power Supply	Accepts 2.7–5.5V input; requires ≥1µF bypass capacitor close to pin to suppress high-frequency noise and sustain transient current.
2 (OUT)	Regulated Output	Delivers fixed 1.8V; must connect ≥10µF low-ESR ceramic capacitor to ground for loop stability and load-transient response.
3 (GND)	Ground Reference	Common return path for input/output currents; requires low-inductance PCB trace to minimize ground bounce in noise-sensitive systems.

Key Features

Feature	Design Value
PMOS Pass Element	Zero gate drive current eliminates base/leakage losses, enabling ultra-low IQ and simplifying bias network design.
Current Limit Fold-Back	Reduces short-circuit current to ≤150mA when V_OUT < 1.05V, limiting junction temperature rise during fault conditions.
Thermal Shutdown	Activates at ~125°C junction temperature and latches off until die cools by ≥20°C-prevents permanent damage during sustained overload.
Green Molding Compound	Halogen-free (Br/Sb-free) epoxy meets IEC 61249-2-21, supporting environmental compliance for consumer and industrial end equipment.

Applications

Wireless Sensor Node

USB Peripheral Controller

Use Scenario: Sub-1W BLE/Wi-Fi sensor node powered by CR2032 or single-cell Li-ion battery.

IC Role / Device Role / Timing Role: Primary 1.8V LDO supplying MCU core, RF transceiver, and ADC reference.

Use Value: 50µA quiescent current extends shelf life >5 years in sleep mode; 400mV dropout enables >90% battery utilization.

Use Scenario: USB 2.0 hub or HID device drawing power from host VBUS (4.75–5.25V).

IC Role / Device Role / Timing Role: Local 1.8V rail generator for USB PHY interface and flash memory controller.

Use Value: ±2% output accuracy ensures reliable signal integrity on 1.8V I/O banks; PSRR >58dB attenuates USB switcher noise.

Industrial PLC I/O Module

Portable Medical Monitor

Use Scenario: DIN-rail mounted I/O module with isolated 3.3V/5V inputs and 1.8V FPGA configuration rail.

IC Role / Device Role / Timing Role: Post-regulator converting isolated 3.3V to clean 1.8V for FPGA configuration memory and logic.

Use Value: Load regulation ±40mV prevents configuration errors during digital I/O switching transients; thermal shutdown protects against enclosure overheating.

Use Scenario: Handheld ECG or pulse oximeter using rechargeable Li-poly battery and low-power analog front-end.

IC Role / Device Role / Timing Role: Dedicated 1.8V supply for precision analog signal chain (PGA, ADC, reference buffer).

Use Value: Low noise and high PSRR preserve SNR in sub-μV biomedical signals; ±2% accuracy maintains calibrated gain scaling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700-1802E/TO	250mA rated, 170mV dropout at 250mA, 1.6µA IQ, TO-92 package	Limited to lower current; better for ultra-low-power sensor nodes where 300mA headroom is unnecessary	Select when IQ < 2µA is mandatory and load never exceeds 250mA-tradeoff is reduced fault robustness and no fold-back current limit
TPS73118DBVR	300mA rated, 170mV dropout at 300mA, 400µA IQ, SOT-23-5 with enable pin	Higher IQ but adds active enable control and better PSRR (70dB); requires external 1µF output cap	Choose when system-level power sequencing is required or higher PSRR justifies 8× IQ increase-no thermal shutdown latch in basic version

Compared with MCP1700-1802E/TO and TPS73118DBVR, AP130-18WL-7 delivers optimal balance of low dropout (400mV), ultra-low IQ (50µA), integrated fold-back protection, and SC59 footprint-making it ideal for cost-sensitive, space-constrained battery devices needing robust 300mA capability without enable logic.

Availability

AP130-18WL-7 is available at Aetrix Electronics and suitable for wireless sensor nodes, USB peripheral controllers, and industrial PLC I/O modules requiring stable component supply with consistent parametric performance across production batches.

Supply support for AP130-18WL-7 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 voltage regulator product line, engineered specifically for battery-powered and space-constrained applications demanding low dropout, low IQ, and integrated fault protection in compact lead-free packages.

FAQ

What is the minimum input voltage required for AP130-18WL-7 to maintain regulation at 300mA load?

The AP130-18WL-7 requires VIN ≥ VOUT + VDROP = 1.8V + 0.4V = 2.2V to sustain regulation at 300mA. Its specified operating range starts at 2.7V, providing 0.5V margin above minimum dropout-ensuring reliable start-up and operation even with input sag during peak loads or battery discharge.

Can AP130-18WL-7 be used with ceramic output capacitors?

Yes-AP130-18WL-7 is stable with ≥10µF X5R/X7R ceramic capacitors having ESR < 100mΩ. The datasheet specifies 10µF as minimum for transient response and phase margin; smaller ceramics (e.g., 4.7µF) may cause instability or overshoot under step-load conditions.

Does AP130-18WL-7 include reverse polarity protection?

No-AP130-18WL-7 lacks internal reverse-voltage protection. Applying negative voltage to IN or OUT relative to GND can damage the PMOS pass element. External protection (e.g., series Schottky diode on input) is required in systems prone to battery reversal or hot-plug events.

How does thermal shutdown behave during continuous overload?

When junction temperature reaches ~125°C, thermal shutdown disables the pass element and holds OFF until temperature drops by ~20°C. This hysteresis prevents oscillation; recovery is automatic with no external reset needed-providing self-protecting behavior during sustained short-circuit or excessive ambient conditions.

AP130-18WL-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Cut Tape (CT)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 1.8V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.5V @ 300mA

Current - Output:: 300mA

Current - Quiescent (Iq):: 100 µA

Current - Supply (Max):: -

PSRR:: 58dB (100Hz)

Control Features:: -

Protection Features:: Over Current, Over Temperature, Short Circuit

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-59-3

AP130-18WL-7 FAQ

1.How can I place an order for AP130-18WL-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP130-18WL-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AP130-18WL-7 reliable?

The price and inventory of AP130-18WL-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP130-18WL-7 is usually 5 days.

3.What payment methods are accepted for AP130-18WL-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP130-18WL-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP130-18WL-7?

AP130-18WL-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP130-18WL-7 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AP130-18WL-7?

For technical support, including AP130-18WL-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP130-18WL-7 requirements.

6.How does Aetrix verify that AP130-18WL-7 is sourced from the original manufacturer or authorized distributors?

All AP130-18WL-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP130-18WL-7 meets industry standards.

7.What is the process for return or replacement of AP130-18WL-7?

All AP130-18WL-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP130-18WL-7, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AP130-18WL-7 part is unused and in its original packaging.

Return procedure for AP130-18WL-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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