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

Diodes Incorporated AP130-18WG-7

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

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Part No.:: AP130-18WG-7

Manufacturer:: Diodes Incorporated

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

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

Datasheet:: AP130-18WG-7.pdf

Description:: IC REG LINEAR 1.8V 300MA SC59

Quantity:: RFQ Add To RFQ list

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Inventory:2,575

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Product details

Overview

AP130-18WG-7 from Diodes Incorporated is a fixed 1.8V, 300mA low-dropout linear regulator in SC59 package with 400mV dropout at full load, 50µA quiescent current, and ±2% output voltage accuracy. It integrates PMOS pass element, thermal shutdown, and current-limit protection, and is designed for battery-powered portable electronics requiring stable low-voltage supply.

For engineers reviewing the AP130-18WG-7 datasheet, AP130-18WG-7 pinout, AP130-18WG-7 application, or AP130-18WG-7 equivalent, key selection considerations include dropout performance at 300mA, thermal resistance (250°C/W), green RoHS-compliant packaging, and compatibility with 1µF input / 10µF output capacitor stabilization.

Technical Context

The AP130-18WG-7 uses an internal PMOS pass transistor with 1.5Ω R_ON, eliminating base drive current and enabling ultra-low quiescent current (50µA typical). Its error amplifier and bandgap reference deliver tight load regulation (±40mV over 1–300mA) and line regulation (0.3%/V).

Protection circuitry includes fold-back short-circuit current limiting (150–300mA) and thermal shutdown triggered above +125°C junction temperature. The device operates across –40°C to +85°C ambient and supports input voltages from 2.7V to 5.5V - sufficient for single-cell Li-ion or dual-cell alkaline systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.8V ±2% - ensures stable core voltage for 1.8V logic rails in microcontrollers and memory interfaces.
Max Output Current	300mA - supports moderate-power peripherals like USB PHYs, SD card controllers, and sensor hubs.
Dropout Voltage	400mV at 300mA - enables operation down to 2.2V input, critical for battery discharge end-of-life in portable devices.
Quiescent Current	50µA typical - minimizes standby power loss, extending battery life in always-on or sleep-mode applications.
PSRR	58dB at 100Hz - suppresses ripple from noisy switchers or shared power rails feeding mixed-signal ICs.
Thermal Resistance θ_JA	250°C/W (SC59) - requires minimal PCB copper area for thermal management in space-constrained layouts.
Protection Features	Current limit + thermal shutdown + short-circuit fold-back - prevents latch-up or destruction during overload or solder shorts.

Pinout & Package

AP130-18WG-7 is housed in a lead-free, green-compliant SC59 package (3-pin SOT-23 variant), measuring 2.90 × 1.30 × 1.00 mm with gull-wing leads. Thermal resistance is 250°C/W (junction-to-ambient) on standard FR-4 board.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN)	Power Input	Accepts 2.7–5.5V input; requires ≥1µF ceramic bypass capacitor close to pin for stability and transient response.
2 (OUT)	Regulated Output	Delivers fixed 1.8V ±2%; requires ≥10µF output capacitor (low-ESR tantalum or ceramic) to maintain loop stability.
3 (GND)	Ground Reference	Common return path for input/output capacitors and load; must be connected with low-inductance trace to minimize noise coupling.

Key Features

Feature	Design Value
PMOS Pass Element	RON = 1.5Ω with zero gate-drive current - eliminates base current draw, preserving ultra-low IQ across load range.
Fast Transient Response	Stable with 10µF output cap - recovers within microseconds from 50–300mA load steps, minimizing voltage droop in burst-mode systems.
Load Regulation	±40mV over 1–300mA - maintains 1.8V rail integrity for noise-sensitive analog blocks (e.g., ADC references, PLLs).
Green Molding Compound	Halogen-free (no Br/Sb) - meets IPC-4101D/21 and JEDEC J-STD-020 moisture sensitivity level 1 requirements.
RoHS Compliance	Lead-free finish per EU Directive 2002/95/EC - qualified for industrial and consumer assembly without exemption concerns.

Applications

Wireless Sensor Node

USB Peripheral Controller

Use Scenario: Battery-powered Zigbee/Bluetooth LE node with MCU, RF transceiver, and environmental sensors operating intermittently.

IC Role / Device Role / Timing Role: Primary 1.8V supply for MCU core and RF IC digital logic, decoupled from noisy switching regulators.

Use Value: 50µA quiescent current extends shelf life and operational runtime; 400mV dropout allows use until battery drops to 2.2V.

Use Scenario: External USB 2.0 hub or HID device (keyboard/mouse) powered from host VBUS with local 1.8V I/O rail generation.

IC Role / Device Role / Timing Role: Local LDO supplying 1.8V to USB PHY interface and controller logic, isolated from VBUS ripple.

Use Value: 58dB PSRR at 100Hz suppresses VBUS switching noise; ±2% accuracy ensures USB signaling compliance.

SD Card Interface

Industrial PLC I/O Module

Use Scenario: Embedded system with SD/MMC socket requiring dedicated 1.8V supply for UHS-I mode operation.

IC Role / Device Role / Timing Role: Dedicated LDO for SD card VCC_IO, independent of main 3.3V system rail.

Use Value: Fast transient response prevents command timeout errors during high-speed block writes; thermal shutdown prevents damage during hot-plug events.

Use Scenario: DIN-rail mounted PLC module with isolated 1.8V logic for FPGA configuration or communication ASICs.

IC Role / Device Role / Timing Role: Secondary LDO generating clean 1.8V from internal 3.3V rail for noise-sensitive digital interfaces.

Use Value: ±40mV load regulation ensures stable timing margins for SPI/I²C buses; SC59 package fits dense industrial PCB layouts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-1802E/TT (Microchip)	250mA max output, 175mV dropout at 250mA, 1.6µA IQ - lower current, much lower IQ, higher cost.	Best suited for ultra-low-power sensor nodes where <100µA total system sleep current is mandatory.	Select if IQ <2µA is required and 250mA output suffices; avoid if 300mA peak load occurs.
TPS73118DBVR (TI)	300mA output, 120mV dropout at 300mA, 400µA IQ - lower dropout, higher IQ, SOT-23-5 package with EN pin.	Preferred for designs needing enable control, tighter dropout, and better PSRR (73dB @ 1kHz), but consumes more quiescent power.	Select if system requires active enable control or sub-200mV dropout; not suitable for <100µA standby budgets.

Compared with MCP1700T-1802E/TT and TPS73118DBVR, AP130-18WG-7 uniquely balances 300mA capability, 400mV dropout, and 50µA IQ in a 3-pin SC59 package - making it optimal for cost-sensitive, space-constrained battery-powered applications where moderate dropout and ultra-low IQ are jointly critical.

Availability

AP130-18WG-7 is available at Aetrix Electronics and suitable for wireless sensor nodes, USB peripheral controllers, and SD card interfaces requiring stable component supply, consistent parametric performance, and RoHS-compliant green packaging.

Supply support for AP130-18WG-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 high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The AP130 series belongs to Diodes' precision LDO portfolio, engineered specifically for battery-powered portable electronics needing low IQ, robust protection, and multiple fixed-output voltages in compact packages.

FAQ

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

The AP130-18WG-7 requires VIN ≥ VOUT + VDROP = 1.8V + 0.4V = 2.2V to sustain 300mA output while maintaining regulation. Its specified input range starts at 2.7V, ensuring margin for line and load transients. Below 2.7V, dropout behavior remains functional but is not guaranteed per datasheet test conditions.

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

Yes - the AP130-18WG-7 is stable with ceramic output capacitors ≥10µF and ESR ≥10mΩ. Diodes' datasheet explicitly validates stability using 10µF X5R/X7R ceramics; no series resistor is needed. Avoid ultra-low-ESR (<5mΩ) ceramics unless verified with phase-margin simulation.

Does AP130-18WG-7 include reverse polarity or reverse current protection?

No - AP130-18WG-7 lacks integrated reverse-polarity or reverse-current blocking. If VIN can fall below VOUT (e.g., during power-down), an external Schottky diode between IN and OUT is recommended to prevent backfeed and potential damage to upstream circuitry.

How does thermal shutdown behave under sustained overload?

Under sustained overload, AP130-18WG-7 activates thermal shutdown when junction temperature exceeds +125°C, disabling the pass element. It automatically recovers once TJ falls below ~110°C (typical hysteresis), cycling on/off until fault clears - preventing permanent damage but requiring thermal design to avoid continuous oscillation.

AP130-18WG-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

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

AP130-18WG-7 FAQ

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

Please submit a Request for Quotation (RFQ) for AP130-18WG-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 AP130-18WG-7 reliable?

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

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your AP130-18WG-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 AP130-18WG-7?

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

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

All AP130-18WG-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 AP130-18WG-7 meets industry standards.

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

All AP130-18WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP130-18WG-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 AP130-18WG-7 part is unused and in its original packaging.

Return procedure for AP130-18WG-7:

1.Submit a request within 90 days.

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

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