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

Diodes Incorporated AP130-28WG-7

Name: AP130-28WG-7
Brand: Diodes Incorporated
SKU: AP130-28WG-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP130-28WG-7

Manufacturer:: Diodes Incorporated

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

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

Datasheet:: AP130-28WG-7.pdf

Description:: IC REG LINEAR 2.8V 300MA SC59

Quantity:: RFQ Add To RFQ list

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Inventory:1,556

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Product details

Overview

AP130-28WG-7 from Diodes Incorporated is a 300mA fixed-output 2.8V low-dropout linear regulator in SC59 package, featuring 400mV dropout at full load, 50µA quiescent current, ±2% output voltage accuracy, and integrated thermal shutdown and current-limit protection. It serves as a primary power rail regulator in space-constrained portable electronics requiring stable low-noise DC supply.

For engineers reviewing the AP130-28WG-7 datasheet, AP130-28WG-7 pinout, AP130-28WG-7 application, or AP130-28WG-7 equivalent, key selection factors include dropout performance at 300mA, SC59 footprint compatibility, 2.8V output tolerance under load/line variation, and thermal resistance (θ_JA = 250°C/W) for ambient-limited PCB layouts.

Technical Context

The AP130-28WG-7 employs a PMOS pass transistor with 1.5Ω on-resistance, eliminating base drive current and enabling ultra-low quiescent current across load range. Its error amplifier uses a 1.08V bandgap reference to regulate output with fast transient response-critical for burst-mode digital loads.

Protection circuitry includes fold-back short-circuit current limiting (150–300mA) and thermal shutdown triggered at 125°C junction temperature. Input voltage range (2.7V–5.5V) and guaranteed 300mA output support direct Li-ion/Li-poly battery input without pre-regulation.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.8V ±2% at 1mA load; ensures stable core logic supply for 2.8V I/O interfaces.
Dropout Voltage	400mV typ. at 300mA; enables operation down to 3.2V input-compatible with single-cell Li-ion discharge curve.
Quiescent Current	50µA typ. at zero load; minimizes standby power loss in always-on battery-powered systems.
PSRR	58dB at 100Hz; suppresses switching noise from upstream DC-DC converters feeding the LDO input.
Load Regulation	30–40mV over 1–300mA; maintains <±0.15% output deviation during processor activity transitions.
Thermal Resistance θ_JA	250°C/W (SC59); requires minimal copper area for thermal management in compact consumer PCBs.
Protection	Current limit + thermal shutdown; prevents latch-up or destruction during sustained overload or poor heatsinking.

Pinout & Package

AP130-28WG-7 is housed in SC59 package (3-pin, surface-mount, lead-free, green molding compound), with 2.70mm × 2.90mm footprint and 1.00mm height. Pin 1 = IN, Pin 2 = OUT, Pin 3 = GND (top view).

Pin/Terminal	Circuit Role	Design Meaning
1 (IN)	Input Power Supply	Accepts 2.7–5.5V unregulated input; requires ≥1µF ceramic decoupling close to pin.
2 (OUT)	Regulated Output	Delivers stable 2.8V; requires ≥10µF low-ESR output capacitor for loop stability.
3 (GND)	Ground Reference	Common return path for input/output capacitors and load; must connect to low-impedance ground plane.

Key Features

Feature	Design Value
PMOS Pass Element	RON = 1.5Ω enables 400mV dropout at 300mA while drawing zero gate drive current-reducing system-level bias power.
Fast Transient Response	Stabilizes within <10µs after 100mA step load change-prevents brown-out in microcontroller peripherals.
Green Molding Compound	Halogen-free (no Br/Sb), RoHS-compliant package meets IPC-1752A environmental requirements for consumer shipments.
Short-Circuit Fold-Back	Limits output current to 150–300mA during fault, reducing power dissipation and enabling safe auto-recovery.
Low-Temp Coefficient	50–150 ppm/°C output drift ensures <±3mV variation across –40°C to +85°C ambient-suitable for industrial edge nodes.

Applications

Wireless Sensor Node

USB Peripheral Controller

Use Scenario: Battery-powered Zigbee/Bluetooth LE sensor node operating 5 years on CR2032 coin cell.

IC Role / Device Role / Timing Role: Primary 2.8V supply for RF transceiver and MCU core, replacing inefficient resistor-capacitor dropper.

Use Value: 50µA quiescent current extends shelf life; 400mV dropout allows full utilization of battery voltage down to 3.2V.

Use Scenario: Compact USB-to-UART bridge IC powering internal logic and I/O buffers from 5V bus.

IC Role / Device Role / Timing Role: Local point-of-load regulator delivering clean 2.8V to USB PHY and flash memory interface.

Use Value: 58dB PSRR attenuates 100Hz ripple from USB VBUS; ±2% accuracy ensures reliable flash programming voltage margin.

Industrial HMI Display

SD Card Interface Regulator

Use Scenario: Fanless panel PC display module with ambient temperature range –25°C to +70°C.

IC Role / Device Role / Timing Role: Stable 2.8V rail for touch controller ASIC and display driver IC.

Use Value: 50–150 ppm/°C tempco maintains <±3mV output shift; thermal shutdown protects against enclosure overheating.

Use Scenario: Embedded SD card slot in medical data logger using SPI interface.

IC Role / Device Role / Timing Role: Dedicated 2.8V supply for SD card VCC_IO, isolated from noisy main system rails.

Use Value: Fast transient response prevents SD command timeout during high-speed block writes; 300mA rating supports UHS-I peak currents.

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-2802E/TT (Microchip)	250mA rated, 175mV dropout at 250mA, 2µA quiescent current, SOT23-3 package.	Lower IQ suits ultra-low-power sleep modes; lower current rating limits use in burst-load applications.	Select when standby current dominates design budget and peak load ≤250mA.
TPS73128DBVR (TI)	300mA rated, 170mV dropout at 300mA, 400µA IQ, SOT23-5 with enable pin.	Lower dropout enables wider input range; higher IQ increases battery drain; enable pin adds control flexibility.	Select when input voltage may dip below 3.0V or system-level power sequencing is required.

Compared with MCP1700T-2802E/TT and TPS73128DBVR, AP130-28WG-7 offers balanced performance: higher current capability than MCP1700, lower IQ than TPS73128, and SC59's smaller footprint than SOT23-5-making it optimal for cost-sensitive, space-constrained 300mA LDO applications.

Availability

AP130-28WG-7 is available at Aetrix Electronics and suitable for wireless sensor nodes, USB peripheral controllers, and industrial HMI displays requiring stable component supply, consistent SC59 packaging, and long-term production continuity.

Supply support for AP130-28WG-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The AP130 series belongs to Diodes' precision LDO portfolio, engineered specifically for battery-powered and space-constrained applications where low dropout, low IQ, and robust protection are mandatory.

FAQ

What is the minimum input voltage required for AP130-28WG-7 to maintain regulation at 300mA load?

The minimum input voltage is calculated as V_OUT + V_DROP = 2.8V + 0.4V = 3.2V. At 300mA load and 25°C, the typical dropout is 400mV; therefore, input must remain ≥3.2V to sustain 2.8V output within specification. Below this, output collapses linearly with input.

Can AP130-28WG-7 be used without an output capacitor?

No. The datasheet mandates a minimum 10µF low-ESR ceramic or tantalum capacitor from OUT to GND for loop stability. Omitting it causes oscillation or excessive overshoot during load transients, risking downstream logic malfunction or latch-up.

Does AP130-28WG-7 support reverse polarity protection?

No. The device lacks internal reverse-voltage blocking; applying negative voltage to IN or OUT relative to GND may damage the PMOS pass element or bandgap circuitry. External Schottky diode or dedicated protection IC is required for reverse-input scenarios.

How does thermal shutdown behave during continuous overload?

When junction temperature reaches ~125°C, thermal shutdown disables the pass transistor, dropping output to near-zero. After cooldown to ~110°C (typical hysteresis), the device automatically resumes regulation-enabling self-recovering fault handling without external reset circuitry.

AP130-28WG-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):: 2.8V

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

AP130-28WG-7 FAQ

1.How can I place an order for AP130-28WG-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP130-28WG-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 AP130-28WG-7 reliable?

The price and inventory of AP130-28WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP130-28WG-7 is usually 5 days.

3.What payment methods are accepted for AP130-28WG-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP130-28WG-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP130-28WG-7?

AP130-28WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP130-28WG-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 AP130-28WG-7?

For technical support, including AP130-28WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP130-28WG-7 requirements.

6.How does Aetrix verify that AP130-28WG-7 is sourced from the original manufacturer or authorized distributors?

All AP130-28WG-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 AP130-28WG-7 meets industry standards.

7.What is the process for return or replacement of AP130-28WG-7?

All AP130-28WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP130-28WG-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 AP130-28WG-7 part is unused and in its original packaging.

Return procedure for AP130-28WG-7:

1.Submit a request within 90 days.

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

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