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

Diodes Incorporated AP130-25SAG-7

Name: AP130-25SAG-7
Brand: Diodes Incorporated
SKU: AP130-25SAG-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP130-25SAG-7

Manufacturer:: Diodes Incorporated

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

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

Datasheet:: AP130-25SAG-7.pdf

Description:: IC REG LINEAR 2.5V 300MA SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:4,384

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Product details

Overview

AP130-25SAG-7 from Diodes Incorporated is a 300mA fixed-output 2.5V low-dropout linear regulator in SOT23 package, featuring 400mV dropout at full load, ±2% output voltage 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 peripherals requiring stable low-noise 2.5V supply.

For engineers reviewing the AP130-25SAG-7 datasheet, AP130-25SAG-7 pinout, AP130-25SAG-7 application, or AP130-25SAG-7 equivalent, key selection criteria include dropout performance at 300mA, load regulation under 40mV, PSRR of 58dB at 100Hz, thermal resistance (θJA = 200°C/W), and compatibility with 1µF input / 10µF output capacitor network.

Technical Context

The AP130-25SAG-7 uses a PMOS pass transistor architecture enabling zero gate-drive current and inherently low quiescent consumption. Its error amplifier compares a scaled bandgap reference against feedback from the regulated 2.5V output, delivering fast transient response via internal compensation.

Protection circuitry includes fold-back current limiting triggered below 1.05V output and thermal shutdown activated above +125°C junction temperature. The device operates across –40°C to +85°C ambient with input voltage range 2.7V–5.5V and requires no external components beyond input/output capacitors for stability.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.5V ±2% - ensures precise rail generation for 2.5V logic or analog circuitry without external resistors.
Max Output Current	300mA - supports moderate-power peripherals like USB transceivers or sensor interfaces.
Dropout Voltage	400mV at 300mA - enables operation down to 2.9V input while maintaining regulation, critical for single-cell Li-ion or dual-cell alkaline systems.
Quiescent Current	50µA typical - minimizes standby power loss in always-on battery applications.
PSRR	58dB at 100Hz - suppresses ripple from noisy switchers or shared power rails feeding sensitive analog stages.
Load Regulation	±40mV from 1mA to 300mA - maintains tight voltage control across dynamic load changes in portable devices.
Thermal Resistance θJA	200°C/W (SOT23) - defines safe power dissipation limit (~150mW max at ΔT=30°C) without heatsinking.

Pinout & Package

SOT23-3 package: small-outline transistor outline with gull-wing leads, 1.3mm × 2.9mm footprint, JEDEC MO-178 compliant, RoHS-compliant green molding compound.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN)	Input Power Supply	Accepts 2.7V–5.5V unregulated input; requires ≥1µF ceramic capacitor to ground for stability and transient response.
2 (OUT)	Regulated Output	Delivers fixed 2.5V ±2% to load; requires ≥10µF output capacitor (low-ESR tantalum or ceramic) to maintain loop stability and reduce noise.
3 (GND)	Ground Reference	Common return path for internal error amplifier, bandgap, and protection circuits; must be low-impedance connection to system ground plane.

Key Features

Feature	Design Value
PMOS Pass Element	Eliminates base/gate drive current, enabling ultra-low IQ (50µA) independent of load.
Fold-Back Current Limit	Reduces short-circuit power dissipation by lowering output current as VOUT drops below 1.05V, protecting IC and PCB traces.
Thermal Shutdown	Activates at TJ > +125°C and holds until junction cools by ≥15°C, preventing permanent damage during sustained overload.
Green Molding Compound	Halogen-free (no Br/Sb), compliant with IPC-4101D/21, suitable for environmentally constrained industrial and consumer designs.

Applications

Battery-Powered Peripherals

PC Card Interfaces

Use Scenario: Powering SD card readers or USB-to-serial adapters in handheld diagnostic tools with single Li-ion cell (3.0–4.2V).

IC Role / Device Role / Timing Role: Primary 2.5V LDO supplying I/O buffer and controller logic, replacing inefficient resistor-zener solutions.

Use Value: Enables >10-hour runtime by minimizing quiescent loss and maintaining regulation down to 2.9V input during battery discharge.

Use Scenario: Regulating 2.5V supply for CompactFlash or PCMCIA card controllers in embedded industrial gateways.

IC Role / Device Role / Timing Role: Local point-of-load regulator decoupling host bus voltage, reducing noise coupling into high-speed data lines.

Use Value: PSRR of 58dB at 100Hz attenuates switching noise from upstream DC/DC converters, improving signal integrity on 16-bit parallel buses.

Wireless Sensor Nodes

Optical Drive Logic

Use Scenario: Providing clean 2.5V rail to BLE SoC and environmental sensors in battery-operated IoT nodes.

IC Role / Device Role / Timing Role: Low-noise analog supply for ADC reference and RF front-end biasing, isolated from digital switching transients.

Use Value: Load regulation ≤40mV ensures consistent sensor measurement accuracy across sleep/wake current transitions (10µA ↔ 300mA).

Use Scenario: Powering servo control logic and laser diode drivers in DVD-ROM sled assemblies.

IC Role / Device Role / Timing Role: Secondary LDO generating stable 2.5V for microstepping motor drivers and focus/track actuator ICs.

Use Value: Dropout of 400mV allows direct derivation from 3.3V main rail, eliminating need for additional buck converter and reducing BOM count.

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
MCP1700-2502E/TO	250mA rated, 1.6µA IQ, 600mV dropout at 250mA, TO-92 package	Lower current capability and higher dropout; suited for ultra-low-power sub-100mA sensor nodes	Select when IQ < 2µA is mandatory and load never exceeds 250mA; avoid for 300mA peak loads.
TPS73025DBVR	200mA rated, 330µA IQ, 120mV dropout at 200mA, SOT23-5 with enable pin	Includes active-high EN pin and lower dropout but higher quiescent current; requires external 1µF output cap	Choose when system-level power sequencing or lower dropout is prioritized over battery life; not drop-in due to pinout and enable requirement.

Compared with MCP1700-2502E/TO and TPS73025DBVR, the AP130-25SAG-7 delivers higher output current (300mA vs. 250mA/200mA) and lower quiescent current than TPS73025DBVR, while offering better dropout than MCP1700-making it optimal for cost-sensitive, medium-current 2.5V applications where SOT23-3 simplicity is preferred.

Availability

AP130-25SAG-7 is available at Aetrix Electronics and suitable for battery-powered peripherals, PC card interfaces, and wireless sensor nodes requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for AP130-25SAG-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 space-constrained, battery-dependent applications demanding low dropout, ultra-low IQ, and robust fault protection without external components.

FAQ

What is the minimum input voltage required for AP130-25SAG-7 to maintain 2.5V regulation at 300mA?

The AP130-25SAG-7 requires VIN ≥ 2.9V to sustain 2.5V output at 300mA load, based on its 400mV typical dropout voltage. Below this threshold, output voltage collapses linearly with input; operation below 2.7V is outside recommended conditions and may cause instability or protection activation.

Can AP130-25SAG-7 operate without an output capacitor?

No. A minimum 10µF low-ESR output capacitor is mandatory for loop stability per the datasheet. Omitting it causes oscillation, excessive output ripple, and potential thermal runaway under load. Ceramic or tantalum types meeting ESR < 1Ω are acceptable; aluminum electrolytics are discouraged due to higher ESR.

Does AP130-25SAG-7 support reverse polarity protection?

No. The AP130-25SAG-7 lacks intrinsic reverse-voltage blocking; applying negative voltage to IN or OUT relative to GND can damage the PMOS pass transistor and internal circuitry. External series diode or MOSFET-based protection must be added if reverse input is possible in the system.

How does thermal shutdown behave during continuous overload?

When junction temperature exceeds +125°C, thermal shutdown disables the pass element and forces output to fall. The device remains latched off until TJ drops by ≥15°C (to ~110°C), then automatically recovers. This hysteresis prevents cycling and provides safe fault containment during sustained short-circuit or excessive ambient conditions.

AP130-25SAG-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):: 2.5V

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

AP130-25SAG-7 FAQ

1.How can I place an order for AP130-25SAG-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP130-25SAG-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 AP130-25SAG-7 reliable?

The price and inventory of AP130-25SAG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP130-25SAG-7 is usually 5 days.

3.What payment methods are accepted for AP130-25SAG-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP130-25SAG-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP130-25SAG-7?

AP130-25SAG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP130-25SAG-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 AP130-25SAG-7?

For technical support, including AP130-25SAG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP130-25SAG-7 requirements.

6.How does Aetrix verify that AP130-25SAG-7 is sourced from the original manufacturer or authorized distributors?

All AP130-25SAG-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 AP130-25SAG-7 meets industry standards.

7.What is the process for return or replacement of AP130-25SAG-7?

All AP130-25SAG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP130-25SAG-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 AP130-25SAG-7 part is unused and in its original packaging.

Return procedure for AP130-25SAG-7:

1.Submit a request within 90 days.

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

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