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 AP7383-41FDC-7

Name: AP7383-41FDC-7
Brand: Diodes Incorporated
SKU: AP7383-41FDC-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AP7383-41FDC-7

Manufacturer:: Diodes Incorporated

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

Package:: 6-UDFN Exposed Pad

Datasheet:: AP7383-41FDC-7.pdf

Description:: LDO CMOS LOWCURR U-DFN2020-6 T&R

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,005

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

Product details

Overview

AP7383-41FDC-7 from Diodes Incorporated is a fixed-output 4.15V ultra-low dropout (ULDO) linear regulator IC designed for space-constrained, battery-powered systems. It delivers up to 150mA output current with 500mV dropout at 50mA, ±1% output voltage accuracy, and only 1.8–3.0µA ground current across load. Used in portable instrumentation and USB-powered devices where low quiescent current and wide 3.5–30V input range are critical.

For engineers reviewing the AP7383-41FDC-7 datasheet, AP7383-41FDC-7 pinout, AP7383-41FDC-7 application, or AP7383-41FDC-7 equivalent, key selection criteria include dropout performance at 150mA, thermal behavior in U-DFN2020-6, EN pin logic thresholds, compatibility with 1µF ceramic output capacitors, and junction temperature derating above +85°C.

Technical Context

The AP7383-41FDC-7 integrates a precision voltage reference, error amplifier, resistor network for fixed 4.15V output, current-limit protection (150mA typical), thermal shutdown (+160°C trip), and enable control. Its architecture supports stable regulation with low-ESR ceramic capacitors and exhibits ±100ppm/°C output voltage drift over –40°C to +125°C.

It operates across a 3.5–30V input range while maintaining ≤0.5% load regulation (1–150mA) and ≤0.05%/V line regulation. The U-DFN2020-6 (Type C) package provides 152°C/W θ_JA, enabling compact PCB layouts with minimal thermal pad area.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 4.15V ±1% - ensures stable supply for 4.2V Li-ion charging circuits or 4.0V microcontroller I/O rails.
Max Input Voltage	30V - supports direct connection to unregulated 24V industrial bus or automotive battery transients.
Dropout Voltage	360–580mV @ 50mA - enables regulation down to VIN = 4.51V, critical for brownout resilience in portable gear.
Ground Current	1.8–3.0µA @ I_OUT = 0–150mA - minimizes battery drain during sleep mode in always-on sensors.
Thermal Shutdown	+160°C with +20°C hysteresis - prevents latch-up during sustained overload in sealed enclosures.
Enable Threshold	V_EN(HI) ≥ 2.0V, V_EN(LO) ≤ 0.4V - compatible with 3.3V GPIO without level-shifting.
Capacitor Support	Stable with 1µF ceramic C_OUT - eliminates need for bulky tantalum or electrolytic capacitors.

Pinout & Package

AP7383-41FDC-7 uses the U-DFN2020-6 (Type C) package: 2.0mm × 2.0mm, 0.65mm height, wettable flank leads, NiPdAu plating, moisture sensitivity Level 1. Thermal pad on underside requires solder paste stencil opening per Diodes' recommended layout.

Pin/Terminal	Circuit Role	Design Meaning
1	VIN	Main input supply connection; must be decoupled with 1µF ceramic capacitor within 3mm of pin.
2	GND	Analog/digital ground reference; connects directly to thermal pad for optimal heat dissipation.
3	VOUT	Regulated 4.15V output; requires 1µF ceramic capacitor placed adjacent to pin for stability.
4	NC	No internal connection; recommended to tie to GND for enhanced thermal conduction and EMI reduction.
5	NC	No internal connection; recommended to tie to GND for enhanced thermal conduction and EMI reduction.
6	EN	Active-high enable input; pulls device into ultra-low standby current (0.01µA) when driven <0.4V.

Key Features

Feature	Design Value
Wide 3.5–30V input range	Enables single-regulator support across 5V USB, 12V wall adapters, and 24V industrial rails without external pre-regulation.
Ultra-low 1.8µA ground current	Extends battery life >10× versus standard LDOs in always-on IoT sensor nodes operating at µA sleep currents.
±1% output accuracy	Meets tight tolerance requirements for ADC reference supplies and precision analog front-ends without trimming.
Thermal shutdown with hysteresis	Prevents thermal runaway during short-circuit events while allowing automatic recovery after cooldown.
Low-ESR ceramic capacitor compatibility	Reduces BOM cost and board area by eliminating need for high-ESR tantalum or polymer capacitors.

Applications

Portable Medical Sensors

USB-Powered Test Equipment

Use Scenario: Continuous glucose monitor with BLE radio and low-power MCU running on coin cell or rechargeable Li-ion.

IC Role / Device Role / Timing Role: Primary 4.15V power rail regulator supplying analog sensor front-end and RF transceiver.

Use Value: 1.8µA quiescent current extends battery runtime beyond 6 months; 4.15V output matches nominal Li-ion voltage for efficient charge termination sensing.

Use Scenario: Handheld oscilloscope probe powered via USB-C PD negotiation delivering 5V/9V/15V.

IC Role / Device Role / Timing Role: Post-regulator converting variable USB PD voltage to stable 4.15V for precision ADC reference and op-amp biasing.

Use Value: 30V max input withstands USB PD transient overshoot; ±1% accuracy ensures sub-0.5LSB error in 12-bit ADC measurements.

Industrial Data Loggers

Smart Home Battery Gateways

Use Scenario: Remote environmental logger using LoRaWAN, powered by 3.6V Li-SOCl₂ primary battery with 24V backup input.

IC Role / Device Role / Timing Role: Dual-input LDO managing main battery and backup rail, enabling seamless switchover without reset.

Use Value: 3.5–30V input range accepts both 3.6V primary and 24V backup; thermal shutdown protects against enclosure overheating in solar-exposed enclosures.

Use Scenario: Zigbee-to-Matter bridge powered by AA alkaline batteries with optional USB charging.

IC Role / Device Role / Timing Role: System power manager providing clean 4.15V to SoC, radio, and secure element under dynamic load switching.

Use Value: Enable pin allows synchronized power sequencing with MCU wake-up; 150mA rating supports concurrent radio transmit bursts and flash programming.

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 (0.15V lower), 250mV dropout @ 250mA, 2.5µA IQ, SOT23-5 package	Lacks enable pin; higher dropout limits use below 4.4V input; smaller package reduces thermal mass	Select if 4.1V output suffices and enable control is unnecessary; verify thermal margin at 150mA in SOT23-5.
Torex XC6210B412MR-G	4.1V output, 200mV dropout @ 100mA, 1.0µA IQ, SOT25 package	Lower dropout improves efficiency at light loads but current limit is 100mA (50mA less); no thermal shutdown	Choose for ultra-low-IQ designs with <100mA peak load and robust external thermal management.

Compared with MCP1703T-4102E/MB and XC6210B412MR-G, AP7383-41FDC-7 uniquely combines 4.15V precision, 150mA current capability, integrated enable, and thermal shutdown in a thermally optimized 2×2mm DFN-making it optimal for compact, safety-aware, multi-rail portable systems.

Availability

AP7383-41FDC-7 is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered test equipment, and industrial data loggers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for AP7383-41FDC-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers across Asia, Europe, and the US, serving industrial, computing, consumer, and communications markets.

The AP7383 series belongs to Diodes' high-voltage ULDO regulator product line, engineered specifically for battery-powered and wide-input industrial applications demanding low IQ, high accuracy, and robust thermal protection in miniature packages.

FAQ

What is the minimum input voltage required for regulation at full 150mA load?

The AP7383-41FDC-7 requires VIN ≥ VOUT + VDROP. At 150mA, typical dropout is 1.05V (max 1.5V). With a 4.15V output, minimum VIN is 5.2V (typical) or 5.65V (worst-case). Below this, output voltage sags proportionally to the deficit.

Can the NC pins (4 and 5) be left floating on the U-DFN2020-6 package?

No-pins 4 and 5 are internally unconnected but must be tied to GND per Diodes' recommendation. This maximizes PCB copper area beneath the package for thermal dissipation and reduces EMI susceptibility. Floating NC pins may degrade thermal performance and increase noise coupling.

Does AP7383-41FDC-7 require an input capacitor, and what value is recommended?

Yes-an input capacitor is mandatory for stability and transient suppression. Diodes specifies 1.0µF ceramic (X5R/X7R) placed within 3mm of the VIN and GND pins. Larger values (e.g., 4.7µF) improve surge immunity but do not affect basic regulation stability.

How does thermal performance differ between U-DFN2020-6 and SOT25 packages at 150mA?

In U-DFN2020-6, θ_JA = 152°C/W yields ~23°C rise at 150mA (P_D ≈ 0.158W); in SOT25 (W5), θ_JA = 193°C/W yields ~31°C rise. The DFN's lower thermal resistance and exposed thermal pad provide superior junction temperature control-critical for continuous 150mA operation in confined spaces.

AP7383-41FDC-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 6-UDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 30V

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:: Over Current, Over Temperature

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: U-DFN2020-6 (Type C)

AP7383-41FDC-7 FAQ

1.How can I place an order for AP7383-41FDC-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7383-41FDC-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 AP7383-41FDC-7 reliable?

The price and inventory of AP7383-41FDC-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7383-41FDC-7 is usually 5 days.

3.What payment methods are accepted for AP7383-41FDC-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7383-41FDC-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7383-41FDC-7?

AP7383-41FDC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7383-41FDC-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 AP7383-41FDC-7?

For technical support, including AP7383-41FDC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7383-41FDC-7 requirements.

6.How does Aetrix verify that AP7383-41FDC-7 is sourced from the original manufacturer or authorized distributors?

All AP7383-41FDC-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 AP7383-41FDC-7 meets industry standards.

7.What is the process for return or replacement of AP7383-41FDC-7?

All AP7383-41FDC-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7383-41FDC-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 AP7383-41FDC-7 part is unused and in its original packaging.

Return procedure for AP7383-41FDC-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 …