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

Diodes Incorporated AP7380-44WR-7

Name: AP7380-44WR-7
Brand: Diodes Incorporated
SKU: AP7380-44WR-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7380-44WR-7

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: AP7380-44WR-7.pdf

Description:: IC REG LINEAR 4.4V 150MA SOT25

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Product details

Overview

AP7380-44WR-7 from Diodes Incorporated is a fixed-output 4.4V, 150mA ultra-low dropout (ULDO) linear regulator in SOT25 (WR) package. It operates across 3.5V–24V input range, delivers ±1% output voltage accuracy at 10mA load, features 360mV typical dropout at 50mA, and draws only 1.8µA ground current at full load-enabling long battery life in portable instrumentation and USB-powered devices.

For engineers reviewing the AP7380-44WR-7 datasheet, AP7380-44WR-7 pinout, AP7380-44WR-7 application, or AP7380-44WR-7 equivalent, key selection criteria include wide VIN tolerance, thermal shutdown behavior at +160°C, EN pin logic thresholds (2.0V high / 0.4V low), and compatibility with 1µF ceramic input/output capacitors without stability compensation.

Technical Context

The AP7380-44WR-7 integrates a precision voltage reference, error amplifier, resistor network for fixed 4.4V output, current-limit protection (150mA typ), and enable-controlled bias circuitry. Its architecture supports operation down to 3.5V input while maintaining regulation up to 24V, with line regulation of 0.05%/V and load regulation of 0.5% over 1–150mA.

Thermal shutdown activates at +160°C with +20°C hysteresis, and the device achieves ±100ppm/°C output voltage temperature coefficient across –40°C to +125°C junction range. Standby current is 0.01µA when EN is low, enabling deep-sleep power management in battery systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 4.4V ±1% at 10mA - ensures stable supply for 4.3–4.5V-tolerant microcontrollers and analog sensors.
Input Voltage Range	3.5V to 24V - supports direct connection to 12V rails, automotive batteries, or multi-cell Li-ion packs without pre-regulation.
Dropout Voltage	360mV typ @ 50mA - enables >90% efficiency at 4.4V output with 5V input, critical for low-voltage USB-C PD applications.
Ground Current	1.8µA typ @ IOUT = 150mA - minimizes quiescent loss in always-on subsystems like real-time clocks or sensor wake-up circuits.
Enable Threshold	V_EN(HI) = 2.0V min, V_EN(LO) = 0.4V max - compatible with 1.8V/3.3V GPIO control without level-shifting.
Thermal Shutdown	+160°C activation with +20°C hysteresis - prevents latch-up during transient overload or poor PCB heatsinking.
Capacitor Compatibility	Stable with 1.0µF ceramic C_IN/C_OUT - eliminates need for bulk electrolytic or tantalum, reducing board area and cost.

Pinout & Package

SOT25 (WR) package: 5-pin surface-mount with exposed thermal pad (pin 4 and 5 are NC for fixed-output version). Pin 1 = GND, Pin 2 = VIN, Pin 3 = VOUT, Pin 4 = NC, Pin 5 = NC. Thermal resistance θ_JA = 166°C/W, θ_JC = 26°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Power ground reference and primary thermal path; must connect to large copper pour for thermal performance.
2	VIN	Main input supply node; accepts 3.5–24V with internal overvoltage clamp to 30V absolute max.
3	VOUT	Regulated 4.4V output; requires 1µF ceramic capacitor within 5mm for stability and transient response.
4, 5	NC	No internal connection; left unconnected per datasheet - no pull-up/down or routing required.

Key Features

Feature	Design Value
Wide Input Range	3.5V–24V operation enables single-regulator support for diverse power sources including 9V/12V adapters and multi-cell batteries.
Ultra-Low Quiescent Current	1.8µA ground current at full 150mA load reduces standby power in always-on IoT edge nodes and wearables.
Low Dropout Performance	360mV dropout at 50mA allows efficient 4.4V generation from 5V USB or 4.75V LDO inputs without cascaded regulation.
Thermal Protection	+160°C shutdown with +20°C hysteresis prevents permanent damage during sustained overload or ambient temperature rise.
Enable Control	Logic-compatible EN pin (0.4V/2.0V thresholds) enables precise sequencing and system-level power gating in multi-rail designs.

Applications

Portable Medical Sensors

USB-Powered Test Equipment

Use Scenario: Continuous glucose monitor with Bluetooth LE MCU and analog front-end requiring stable 4.4V rail from coin cell or rechargeable LiPo.

IC Role / Device Role / Timing Role: Primary voltage regulator delivering clean, low-noise 4.4V to ADC reference and RF transceiver.

Use Value: 1.8µA ground current extends battery life beyond 12 months; 0.5% load regulation maintains ADC accuracy across full discharge curve.

Use Scenario: Handheld oscilloscope module powered via USB-C PD (5V/9V) with internal 4.4V rail for FPGA I/O banks and precision DACs.

IC Role / Device Role / Timing Role: Post-regulator converting USB-derived 5V to tightly regulated 4.4V for mixed-signal domain isolation.

Use Value: 360mV dropout preserves headroom for 5V-to-4.4V conversion; ±1% accuracy ensures DAC full-scale compliance under varying USB source impedance.

Industrial Data Loggers

Automotive Cabin Sensors

Use Scenario: Remote environmental logger using LoRaWAN radio and MEMS sensors, powered by 3×AA alkaline cells (4.5V–6V) or solar-charged LiFePO₄ (3.2–3.65V).

IC Role / Device Role / Timing Role: Wide-input ULDO supplying 4.4V to microcontroller and wireless SoC during brown-out conditions.

Use Value: 3.5V minimum VIN enables operation down to 3.8V battery voltage; thermal shutdown protects against enclosure overheating in sealed enclosures.

Use Scenario: Occupancy sensor with IR emitter/detector and CAN interface, mounted near vehicle HVAC ducts where ambient reaches +85°C.

IC Role / Device Role / Timing Role: Local 4.4V regulator for sensor signal chain and CAN transceiver, operating across –40°C to +125°C junction range.

Use Value: ±100ppm/°C tempco ensures <±5mV drift over full temperature range; AEC-Q200-compliant packaging available (Y variant) for automotive qualification paths.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ULDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1703T-4402E/MB	4.4V fixed, 250mA, 600mV dropout @ 250mA, 2.5µA IQ, SOT23-5	Higher dropout limits use below 5V input; smaller SOT23 footprint but lower thermal capability	Select for space-constrained designs where 5V input is guaranteed and thermal load is light.
TPS7A2044PDBVR	4.4V fixed, 300mA, 175mV dropout @ 300mA, 6.5µA IQ, SOT23-5	Lower dropout enables 4.4V from 4.5V sources; higher IQ increases standby loss in battery systems	Select when ultra-low dropout is mandatory and input stays ≥4.5V; avoid in coin-cell applications due to higher IQ.

Compared with MCP1703T-4402E/MB and TPS7A2044PDBVR, the AP7380-44WR-7 uniquely balances wide 3.5–24V input, ultra-low 1.8µA ground current, and robust thermal protection - making it optimal for battery-backed industrial and portable equipment where input voltage variability and longevity are critical.

Availability

AP7380-44WR-7 is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered test equipment, industrial data loggers, and automotive cabin sensors requiring stable component supply with consistent parametric performance across temperature and load.

Supply support for AP7380-44WR-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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The AP7380 series belongs to Diodes' high-reliability ULDO regulator product line, designed specifically for battery-powered and wide-input industrial applications demanding low quiescent current, thermal resilience, and ceramic-capacitor compatibility.

FAQ

What is the maximum output current and how is current limiting implemented?

The AP7380-44WR-7 provides 150mA typical output current with foldback current limiting that activates when VOUT drops to 98% of nominal. At 150mA load, dropout rises to 1050mV (max), and the internal current limit circuit prevents thermal runaway by reducing output current above threshold-verified in DS39196 Rev. 4-2, page 4, ILIMIT parameter.

Does the AP7380-44WR-7 require external compensation components?

No external compensation is required. The AP7380-44WR-7 is internally compensated for stability with 1.0µF ceramic input and output capacitors, as confirmed in the Typical Applications Circuit (page 3) and Electrical Characteristics table (page 4) of DS39196. ESR independence eliminates need for tantalum or electrolytic capacitors.

How does the enable pin behave during power-up and what is its leakage current?

The EN pin has 1µA max input current across –40°C to +125°C, with logic-high threshold ≥2.0V and logic-low threshold ≤0.4V. During power-up, the regulator remains disabled until EN exceeds 2.0V; no power-on reset delay or glitch filtering is built-in-timing is determined solely by external EN control slew rate.

Is the SOT25 (WR) package RoHS and halogen-free compliant?

Yes. The AP7380-44WR-7 uses fully lead-free, RoHS 3 (2015/863/EU) compliant construction with <900ppm bromine, <900ppm chlorine, and <1000ppm antimony-certified as "Green" per Diodes' definitions (DS39196, page 1, Notes 1–3). Matte tin-plated leads meet MIL-STD-202 solderability requirements.

AP7380-44WR-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-74A, SOT-753

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 24V

Voltage - Output (Min/Fixed):: 4.4V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 1.5V @ 150mA

Current - Output:: 150mA

Current - Quiescent (Iq):: 3 µA

Current - Supply (Max):: 3 µA

PSRR:: -

Control Features:: -

Protection Features:: Current Limit, Thermal Shutdown

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-25

AP7380-44WR-7 FAQ

1.How can I place an order for AP7380-44WR-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7380-44WR-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 AP7380-44WR-7 reliable?

The price and inventory of AP7380-44WR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7380-44WR-7 is usually 5 days.

3.What payment methods are accepted for AP7380-44WR-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7380-44WR-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7380-44WR-7?

AP7380-44WR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7380-44WR-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 AP7380-44WR-7?

For technical support, including AP7380-44WR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7380-44WR-7 requirements.

6.How does Aetrix verify that AP7380-44WR-7 is sourced from the original manufacturer or authorized distributors?

All AP7380-44WR-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 AP7380-44WR-7 meets industry standards.

7.What is the process for return or replacement of AP7380-44WR-7?

All AP7380-44WR-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7380-44WR-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 AP7380-44WR-7 part is unused and in its original packaging.

Return procedure for AP7380-44WR-7:

1.Submit a request within 90 days.

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

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