Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Diodes Incorporated AP130-28SAG-7

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

Compare

Part No.:: AP130-28SAG-7

Manufacturer:: Diodes Incorporated

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

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

Datasheet:: AP130-28SAG-7.pdf

Description:: IC REG LINEAR 2.8V 300MA SOT23-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,826

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AP130-28SAG-7 from Diodes Incorporated is a fixed 2.8V, 300mA low-dropout linear regulator in SOT23 package with 400mV dropout at full load, 50µA quiescent current, and ±2% output voltage accuracy-designed for battery-powered wireless peripherals requiring stable low-noise supply under light-to-moderate load.

For engineers reviewing the AP130-28SAG-7 datasheet, AP130-28SAG-7 pinout, AP130-28SAG-7 application, or AP130-28SAG-7 equivalent, key selection criteria include dropout performance at 300mA, thermal resistance (θ_JA = 200°C/W), PSRR of 58dB at 100Hz, short-circuit fold-back protection, and green RoHS-compliant SOT23 packaging.

Technical Context

The AP130-28SAG-7 integrates a PMOS pass element with no base current draw, error amplifier, bandgap reference, and thermal shutdown circuitry. Its internal 1.5Ω R_ON enables low dropout while maintaining stability with ≥10µF output capacitance.

It delivers fast transient response and tight load regulation (±40mV over 1–300mA), supported by built-in current limit (450mA typ) and short-circuit fold-back (150–300mA). Operation is specified from −40°C to +85°C ambient with input range 2.7V–5.5V.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.8V ±2% - ensures precise rail for 2.8V logic or RF biasing without external feedback.
Max Output Current	300mA continuous - supports moderate-power microcontrollers, transceivers, or sensor interfaces.
Dropout Voltage	400mV at 300mA - enables operation down to 3.2V input, critical for single-cell Li-ion or 3.3V system backup.
Quiescent Current	50µA typical - minimizes standby power loss in always-on battery applications.
PSRR	58dB at 100Hz - suppresses switching noise from upstream DC/DC converters feeding the LDO input.
Thermal Resistance θ_JA	200°C/W (SOT23) - defines safe power dissipation limit (~150mW max at ΔT=30°C) on standard FR-4 PCB.
Protection Features	Current limit + thermal shutdown + short-circuit fold-back - prevents latch-up or destruction during fault conditions.

Pinout & Package

SOT23-3 package: small-outline transistor outline with gull-wing leads, 1.3mm × 2.9mm footprint, RoHS-compliant green molding compound, and 200°C/W junction-to-ambient thermal resistance on standard PCB layout.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN)	Input Power Supply	Accepts 2.7–5.5V input; requires ≥1µF ceramic bypass capacitor close to pin for stability.
2 (OUT)	Regulated Output	Delivers fixed 2.8V ±2%; requires ≥10µF low-ESR output capacitor for transient stability.
3 (GND)	Ground Reference	Common return path for input/output capacitors and load; must be low-impedance connection to minimize noise coupling.

Key Features

Feature	Design Value
PMOS Pass Element	RON = 1.5Ω eliminates base drive current, enabling ultra-low IQ and simplifying bias design.
Fast Transient Response	Maintains <±2% VOUT deviation during 100mA step load changes due to optimized internal compensation.
Load Regulation	±40mV over 1–300mA load range - ensures consistent voltage delivery across operating conditions.
Green RoHS Packaging	SOT23 with halogen-free, antimony-free molding compound - meets environmental compliance for consumer and industrial use.

Applications

Battery-Powered Wireless Peripherals

PC Card Power Management

Use Scenario: USB Bluetooth dongle or 2.4GHz RF module powered by single-cell Li-ion (3.0–4.2V).

IC Role / Device Role / Timing Role: Primary 2.8V supply regulator for RF transceiver IC and baseband controller.

Use Value: 400mV dropout allows >90% usable battery voltage range; 50µA IQ extends shelf life in sleep mode.

Use Scenario: Compact flash or LAN card requiring clean 2.8V I/O rail alongside 3.3V core.

IC Role / Device Role / Timing Role: Secondary LDO supplying 2.8V interface logic, isolated from noisy 3.3V switching supply.

Use Value: 58dB PSRR attenuates 100Hz ripple from upstream converter, reducing digital noise coupling into analog PHY.

Low-Power Sensor Node

Embedded Microcontroller Core Supply

Use Scenario: Zigbee or BLE temperature/humidity node with coin-cell or energy-harvesting source.

IC Role / Device Role / Timing Role: Main regulator for MCU, radio, and analog front-end, operating in pulsed active/sleep cycles.

Use Value: Low 50µA IQ dominates system sleep current; fold-back current limit prevents thermal runaway during sensor self-test shorts.

Use Scenario: ARM Cortex-M0+ MCU in portable medical device requiring stable 2.8V core voltage.

IC Role / Device Role / Timing Role: Core voltage regulator delivering tightly regulated 2.8V to CPU and SRAM blocks.

Use Value: ±2% accuracy ensures reliable operation across temperature; 200°C/W θ_JA enables thermal margin on compact PCB without heatsink.

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 max output, 175mV dropout at 250mA, 2.0µA IQ - lower power but reduced current capability.	Best for ultra-low-IQ sub-100mA sensor nodes; insufficient for 300mA RF bursts.	Select when standby current is primary constraint and peak load ≤250mA.
TPS7A2028PDQNR (TI)	300mA output, 170mV dropout at 300mA, 6.5µA IQ, 70dB PSRR - superior performance but SOT23-5 package.	Requires PCB redesign for 5-pin layout; better suited for noise-sensitive analog signal chains.	Choose when PSRR >70dB and dropout <200mV are mandatory, and board space allows SOT23-5.

Compared with MCP1700T-2802E/TT and TPS7A2028PDQNR, the AP130-28SAG-7 offers balanced 300mA capability, proven 400mV dropout, and SOT23-3 compatibility-making it optimal for cost-sensitive, space-constrained designs where 50µA IQ and robust fault protection are sufficient.

Availability

AP130-28SAG-7 is available at Aetrix Electronics and suitable for battery-powered wireless peripherals, PC peripheral cards, and low-power sensor nodes requiring stable component supply with lead-free, green-compliant packaging.

Supply support for AP130-28SAG-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 for battery-operated and noise-sensitive applications where low dropout, low IQ, and integrated protection are essential.

FAQ

What is the minimum input voltage required for AP130-28SAG-7 to maintain regulation?

The AP130-28SAG-7 requires VIN ≥ VOUT + VDROP = 2.8V + 0.4V = 3.2V to sustain regulation at 300mA load. At lighter loads, dropout decreases-e.g., ~150mV at 50mA-allowing operation down to ~2.95V input. Below 3.2V under full load, output voltage drops linearly with input.

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

No. The datasheet mandates ≥10µF low-ESR output capacitance (e.g., ceramic or tantalum) for stability. Omitting it causes oscillation or excessive overshoot during load transients. Input capacitance ≥1µF is also required to prevent input sag during dynamic load steps.

Does AP130-28SAG-7 support reverse polarity or reverse current protection?

No. The AP130-28SAG-7 lacks internal reverse-voltage or reverse-current blocking. If input can fall below output (e.g., during hot-swap or battery removal), an external Schottky diode in series with IN is required to prevent backfeed and potential damage.

How does thermal shutdown behave during sustained overload?

Under sustained overload, the AP130-28SAG-7 activates thermal shutdown when junction temperature exceeds +125°C, turning off the pass element. It remains latched off until TJ cools to ~110°C (typical hysteresis), then auto-restarts-providing cyclic protection without external intervention.

AP130-28SAG-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:: SOT-23-3

AP130-28SAG-7 FAQ

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

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

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

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your AP130-28SAG-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 AP130-28SAG-7?

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

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

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

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

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

Return procedure for AP130-28SAG-7:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …