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

Diodes Incorporated AP7380-41WR-7

Name: AP7380-41WR-7
Brand: Diodes Incorporated
SKU: AP7380-41WR-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7380-41WR-7

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: AP7380-41WR-7.pdf

Description:: IC REG LINEAR 4.1V 150MA SOT25

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Product details

Overview

AP7380-41WR-7 from Diodes Incorporated is a fixed-output 4.15V ultra-low dropout (ULDO) linear regulator IC designed for space-constrained portable and battery-powered systems. It delivers up to 150mA output current with 500mV dropout at 50mA, 1.8µA ground current at zero load, ±1% output voltage accuracy, and operates across a 3.5V–24V input range - enabling direct regulation from multi-cell Li-ion or industrial 12V/24V rails in USB peripherals and handheld instrumentation.

For engineers reviewing the AP7380-41WR-7 datasheet, AP7380-41WR-7 pinout, AP7380-41WR-7 application, or AP7380-41WR-7 equivalent, key selection criteria include its 4.15V fixed output, SOT25-WR package thermal resistance (166°C/W), EN pin logic thresholds (2.0V high / 0.4V low), and compatibility with 1µF ceramic input/output capacitors - critical for low-noise power sequencing in portable medical sensors and industrial data loggers.

Technical Context

The AP7380-41WR-7 integrates a precision voltage reference, error amplifier, resistor network for fixed 4.15V output, current-limit protection (150mA typical), and enable-controlled shutdown with 0.01µA standby current. Its internal architecture supports stable operation with low-ESR ceramic capacitors and exhibits ±100ppm/°C output voltage temperature coefficient over –40°C to +125°C.

Line regulation is 0.05%/V and load regulation is 0.5% across 1–150mA, while thermal shutdown activates at +160°C with +20°C hysteresis. The device uses a single-stage pass transistor topology without external compensation, simplifying PCB layout for point-of-load regulation in compact embedded subsystems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 4.15V ±1% - ensures precise biasing for 4.2V-tolerant microcontrollers and analog front-ends.
Input Voltage Range	3.5V to 24V - supports direct connection to 3-cell Li-ion (12.6V max), 12V industrial rails, and legacy USB power sources.
Max Output Current	150mA - sufficient for powering low-power MCUs, sensors, and RF transceivers in portable designs.
Dropout Voltage	500mV @ 50mA - enables >90% efficiency at light loads when VIN = 4.65V, extending battery runtime.
Ground Current	1.8µA @ IOUT = 0mA - minimizes quiescent power loss in always-on monitoring circuits.
Enable Threshold	V_EN(HI) = 2.0V, V_EN(LO) = 0.4V - 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 heatsinking.

Pinout & Package

SOT25-WR package: 5-pin surface-mount outline with exposed pad (non-electrical), 3.0mm × 2.8mm footprint, 0.95mm height, and matte tin-plated leads compliant with J-STD-020 Level 1 moisture sensitivity.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Power ground reference and thermal path - must be connected to large copper pour for thermal dissipation.
2	VIN	Main input supply - requires 1µF ceramic capacitor within 5mm of pin for stability.
3	VOUT	Regulated 4.15V output - connects directly to load; 1µF ceramic output capacitor mandatory.
4	NC	No internal connection - left floating or tied to GND per layout best practice; no electrical function.
5	EN	Active-high enable - pulls to GND to disable regulator and reduce I_STD to 0.01µA for system-level power gating.

Key Features

Feature	Design Value
Wide Input Range (3.5–24V)	Eliminates need for pre-regulation stages when interfacing with variable-voltage battery packs or unregulated DC supplies.
Ultra-Low Quiescent Current (1.8µA)	Extends shelf life and operational runtime in battery-backed IoT nodes and emergency alert devices.
Ceramic Capacitor Compatibility	Enables use of small, low-ESR 0402/0603 MLCCs - reduces BOM count and board area vs. tantalum alternatives.
±1% Output Accuracy	Meets tight tolerance requirements for ADC reference buffers and precision sensor signal chains without trimming.
Thermal Shutdown with Hysteresis	Prevents thermal cycling failure during sustained overload; +20°C hysteresis ensures clean recovery after cooling.

Applications

Portable Medical Sensors

Industrial Data Loggers

Use Scenario: Continuous glucose monitor (CGM) with Bluetooth LE MCU and analog front-end.

IC Role / Device Role / Timing Role: Primary 4.15V supply for MCU core and ADC reference, enabled only during measurement cycles.

Use Value: 1.8µA quiescent current extends 2-week battery life; 4.15V output matches BLE SoC VDDIO spec while avoiding overvoltage stress.

Use Scenario: Ruggedized environmental logger using 3.3V MCU, thermistor array, and SD card interface.

IC Role / Device Role / Timing Role: Secondary LDO supplying 4.15V to precision voltage reference IC (e.g., REF3041) for 24-bit ADC.

Use Value: ±1% output accuracy and ±100ppm/°C drift ensure <0.1% total error across –25°C to +70°C operating range.

USB-C Peripheral Adapters

Handheld Test Instruments

Use Scenario: Compact USB-C to RS-485 adapter with isolated power and UART bridge IC.

IC Role / Device Role / Timing Role: Post-isolation LDO generating 4.15V for isolated side UART transceiver and level-shifter.

Use Value: 24V input capability allows direct connection to PoE-derived 24V rails; 500mV dropout enables operation down to 4.65V input during brownout.

Use Scenario: Battery-powered multimeter with LCD backlight driver and analog measurement circuitry.

IC Role / Device Role / Timing Role: Dedicated 4.15V rail for op-amp signal conditioning stage and auto-zero calibration circuit.

Use Value: Low noise and excellent line/load regulation (<0.05%/V, <0.5%) prevent measurement offset drift during battery discharge.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1703T-4102E/MB	4.1V output (0.1V lower), 250mV dropout @ 250mA, 2.5µA IQ, SOT23-5 package.	Lacks EN pin; fixed 4.1V output less optimal for 4.2V-tolerant loads requiring margin.	Select when EN functionality is unnecessary and lower dropout at higher current is prioritized.
Torex XC6210B412MR-G	4.1V output, 150mA limit, 1.0µA IQ, 300mV dropout @ 100mA, SOT25 package.	No thermal shutdown; requires external thermal management in high-ambient environments.	Choose for ultra-low IQ designs where thermal safety is managed externally or ambient is controlled.

Compared with MCP1703T-4102E/MB and XC6210B412MR-G, the AP7380-41WR-7 uniquely combines 4.15V output matching common 4.2V battery-charged systems, integrated EN control, thermal shutdown with hysteresis, and robust 24V input tolerance - making it optimal for portable equipment requiring both precision and fault resilience.

Availability

AP7380-41WR-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, USB-C peripheral adapters, and handheld test instruments requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for AP7380-41WR-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 AP7380 series belongs to Diodes' precision ULDO regulator product line, engineered specifically for battery-powered and USB-connected devices demanding low IQ, wide VIN, and tight output accuracy in minimal footprint packages.

FAQ

What is the minimum input voltage required for regulation at 4.15V output?

The AP7380-41WR-7 requires VIN ≥ 4.65V to maintain regulation at full 150mA load, based on its maximum dropout voltage of 500mV at 50mA and 1000mV at 100mA. At 10mA load, dropout drops to ~360mV, allowing stable operation down to 4.51V input. Below 3.5V, the device ceases regulation and enters undervoltage lockout.

Can the AP7380-41WR-7 be used with aluminum polymer capacitors instead of ceramic?

No - the AP7380-41WR-7 is explicitly characterized and stabilized for use with 1µF low-ESR ceramic capacitors on both input and output. Aluminum polymer capacitors exhibit higher ESR and different frequency response, which may cause instability, overshoot, or oscillation. Diodes' datasheet specifies ceramic-only compatibility for guaranteed performance.

Is the EN pin internally pulled down when not driven?

No - the EN pin has no internal pull-down. It presents 1µA leakage current and requires an explicit external pull-down resistor (e.g., 100kΩ to GND) to ensure reliable disable state during power-up or GPIO float conditions. Leaving EN floating risks undefined startup behavior due to noise coupling.

Does the AP7380-41WR-7 meet AEC-Q200 for automotive use?

No - the AP7380-41WR-7 is not qualified to AEC-Q200. Diodes states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing - none of which apply to this standard commercial-grade SOT25-WR variant. For automotive applications, contact Diodes directly for qualified alternatives like the AP7381 series.

AP7380-41WR-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):: 4.1V

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

AP7380-41WR-7 FAQ

1.How can I place an order for AP7380-41WR-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7380-41WR-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 AP7380-41WR-7 reliable?

The price and inventory of AP7380-41WR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7380-41WR-7 is usually 5 days.

3.What payment methods are accepted for AP7380-41WR-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7380-41WR-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7380-41WR-7?

AP7380-41WR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7380-41WR-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 AP7380-41WR-7?

For technical support, including AP7380-41WR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7380-41WR-7 requirements.

6.How does Aetrix verify that AP7380-41WR-7 is sourced from the original manufacturer or authorized distributors?

All AP7380-41WR-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 AP7380-41WR-7 meets industry standards.

7.What is the process for return or replacement of AP7380-41WR-7?

All AP7380-41WR-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7380-41WR-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 AP7380-41WR-7 part is unused and in its original packaging.

Return procedure for AP7380-41WR-7:

1.Submit a request within 90 days.

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

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