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

Diodes Incorporated AP130-35SAG-7

Name: AP130-35SAG-7
Brand: Diodes Incorporated
SKU: AP130-35SAG-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP130-35SAG-7

Manufacturer:: Diodes Incorporated

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

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

Datasheet:: AP130-35SAG-7.pdf

Description:: IC REG LINEAR 3.5V 300MA SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:4,421

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Product details

Overview

AP130-35SAG-7 from Diodes Incorporated is a fixed-output 3.5V, 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 modules requiring stable low-noise supply under variable load.

For engineers reviewing the AP130-35SAG-7 datasheet, AP130-35SAG-7 pinout, AP130-35SAG-7 application, or AP130-35SAG-7 equivalent, key selection criteria include dropout performance at 300mA, thermal resistance (θ_JA = 200°C/W), green RoHS-compliant packaging, and fast transient response in space-constrained portable designs.

Technical Context

The AP130-35SAG-7 integrates a PMOS pass element with 1.5Ω R_ON, bandgap reference, error amplifier, and protection circuitry including fold-back current limiting and thermal shutdown. Its architecture eliminates base drive current, enabling ultra-low quiescent current across load range.

It operates within 2.7V–5.5V input range and delivers regulated 3.5V output with ≤40mV load regulation (1–300mA) and 58dB PSRR at 100Hz. Stability requires ≥10µF output capacitance per functional description.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.5V ±2% - ensures precise rail generation for 3.3V-tolerant logic without external feedback.
Max Output Current	300mA - supports moderate-power RF transceivers and microcontroller peripherals in compact devices.
Dropout Voltage	400mV @ 300mA - enables operation down to 3.9V input, critical for single-cell Li-ion or dual-cell alkaline systems.
Quiescent Current	50µA typical - minimizes standby power loss in always-on IoT sensors and sleep-mode communication modules.
PSRR	58dB @ 100Hz - suppresses switching noise from adjacent DC/DC converters feeding shared input rails.
Thermal Resistance θ_JA	200°C/W (SOT23) - defines maximum power dissipation (≤375mW at 85°C ambient) before thermal shutdown activates.
Protection Features	Current limit (350–450mA), thermal shutdown, short-circuit fold-back - prevents latch-up and permanent damage during fault conditions.

Pinout & Package

SOT23-3 package: small-outline transistor outline with 1.3mm × 2.9mm footprint, 1.45mm height, and exposed pad not present - suitable for high-density PCB layouts with manual or automated assembly.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN)	Input Power Supply	Accepts 2.7–5.5V; requires ≥1µF ceramic bypass capacitor close to pin to suppress high-frequency noise and sustain transient current.
2 (OUT)	Regulated Output	Delivers stable 3.5V; must connect ≥10µF low-ESR output capacitor to ground for loop stability and load-step response.
3 (GND)	Ground Reference	Common return path for input/output capacitors and load; shortest possible trace to minimize ground bounce and EMI coupling.

Key Features

Feature	Design Value
PMOS Pass Element	RON = 1.5Ω eliminates base current draw, enabling true 50µA IQ independent of load - extends battery life in intermittent-duty applications.
Fast Transient Response	Stabilizes within <10µs after 100mA load step - maintains clean supply to RF ICs during burst transmission without external compensation.
Green RoHS Compliance	SOT23 package uses bromine/antimony-free molding compound - meets IPC-1752A material declaration requirements for eco-design certification.
Integrated Protection	Thermal shutdown triggers at ~150°C junction temperature; current fold-back reduces short-circuit power dissipation by >60% versus hard-limit designs.

Applications

Wireless Sensor Node

USB Peripheral Controller

Use Scenario: Sub-1GHz ISM-band sensor node powered by CR2032 coin cell with intermittent BLE or LoRaWAN transmission.

IC Role / Device Role / Timing Role: Primary 3.5V supply regulator for MCU, radio transceiver, and analog front-end.

Use Value: 50µA quiescent current enables >2-year shelf life; 400mV dropout allows operation until cell voltage drops to 3.9V.

Use Scenario: USB 2.0 hub controller board drawing peak 250mA during enumeration and data transfer.

IC Role / Device Role / Timing Role: Local LDO supplying core logic voltage to USB PHY and packet controller.

Use Value: 58dB PSRR attenuates 100Hz ripple from upstream DC/DC converter, preventing bit errors in high-speed signaling.

Industrial Handheld Terminal

Low-Power Display Driver

Use Scenario: Ruggedized barcode scanner with ARM Cortex-M4 MCU, imager, and haptic feedback motor.

IC Role / Device Role / Timing Role: Secondary LDO generating clean 3.5V rail for image sensor interface and touch controller.

Use Value: Load regulation ≤40mV ensures consistent ADC reference accuracy across motor activation cycles.

Use Scenario: OLED display module in smartwatch with dynamic brightness control and frame-rate modulation.

IC Role / Device Role / Timing Role: Bias supply for display driver IC's analog voltage generators and gamma correction DACs.

Use Value: ±2% output accuracy maintains color fidelity and contrast consistency across temperature (-40°C to +85°C).

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-3502E/TT (Microchip)	250mA max output, 175mV dropout @ 250mA, 2.0µA IQ - lower power but reduced current capability.	Optimized for ultra-low-power sub-100µA systems; insufficient for 300mA RF bursts.	Select when standby current dominates design priority and peak load ≤250mA.
TPS73035DBVR (TI)	200mA max, 120mV dropout @ 200mA, 330µA IQ - tighter initial accuracy (±1%) but higher quiescent current.	Better for precision analog rails where noise and accuracy outweigh battery life concerns.	Choose when PSRR >60dB and load regulation <15mV are required, accepting 6.6× higher IQ.

Compared with MCP1700T-3502E/TT and TPS73035DBVR, the AP130-35SAG-7 uniquely balances 300mA delivery, 400mV dropout, and 50µA IQ in SOT23 - making it optimal for cost-sensitive, battery-operated RF modules needing headroom between Li-ion min voltage and regulated rail.

Availability

AP130-35SAG-7 is available at Aetrix Electronics and suitable for wireless sensor nodes, USB peripheral controllers, and industrial handheld terminals requiring stable component supply with lead-free, green-compliant packaging and volume-ready tape-and-reel logistics.

Supply support for AP130-35SAG-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, serving automotive, industrial, computing, and consumer markets with high-reliability components.

The AP130 series belongs to Diodes' precision LDO portfolio targeting portable and battery-powered applications - engineered for minimal dropout, ultra-low IQ, and robust fault protection in space-constrained designs.

FAQ

What is the minimum input voltage required for AP130-35SAG-7 to maintain regulation at 300mA?

The minimum input voltage is calculated as V_OUT + V_DROP = 3.5V + 0.4V = 3.9V. Below this, output voltage sags proportionally with input; datasheet specifies guaranteed 300mA operation only when VIN ≥ 3.9V at 25°C ambient.

Can AP130-35SAG-7 be used with ceramic output capacitors?

Yes - the device is stable with ≥10µF X5R/X7R ceramic capacitors having ESR ≤100mΩ. The datasheet explicitly validates stability with 10µF ceramic output capacitance, eliminating need for tantalum or aluminum electrolytic alternatives.

Does AP130-35SAG-7 require an input capacitor?

Yes - a minimum 1µF ceramic capacitor must be placed between IN and GND, located within 3mm of the package. This reduces high-frequency input impedance and prevents oscillation during load transients, as confirmed in the Typical Application Circuit.

How does thermal shutdown behave during sustained overload?

When junction temperature exceeds ~150°C, thermal shutdown disables the pass element until die cools by ~20°C. Recovery is automatic and non-latching; fold-back current limiting reduces power dissipation during short-circuit events to prevent thermal runaway.

AP130-35SAG-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):: 3.5V

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

AP130-35SAG-7 FAQ

1.How can I place an order for AP130-35SAG-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP130-35SAG-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 AP130-35SAG-7 reliable?

The price and inventory of AP130-35SAG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP130-35SAG-7 is usually 5 days.

3.What payment methods are accepted for AP130-35SAG-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP130-35SAG-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP130-35SAG-7?

AP130-35SAG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP130-35SAG-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 AP130-35SAG-7?

For technical support, including AP130-35SAG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP130-35SAG-7 requirements.

6.How does Aetrix verify that AP130-35SAG-7 is sourced from the original manufacturer or authorized distributors?

All AP130-35SAG-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 AP130-35SAG-7 meets industry standards.

7.What is the process for return or replacement of AP130-35SAG-7?

All AP130-35SAG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP130-35SAG-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 AP130-35SAG-7 part is unused and in its original packaging.

Return procedure for AP130-35SAG-7:

1.Submit a request within 90 days.

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

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