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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Reference

Diodes Incorporated LM4041DADJH5TA

Name: LM4041DADJH5TA
Brand: Diodes Incorporated
SKU: LM4041DADJH5TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM4041DADJH5TA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: LM4041DADJH5TA.pdf

Description:: IC VREF SHUNT ADJ 1% SC70-5

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Product details

Overview

LM4041DADJH5TA from Diodes Incorporated is an adjustable precision shunt voltage reference IC in SC70-5 package, delivering 1.24 V to 10 V output via external resistor divider, with ±1% initial tolerance at 25°C, 20 ppm/°C max temperature coefficient, and 20 µV_RMS noise (10 Hz–10 kHz). It operates from 60 µA to 12 mA reverse current and supports -40°C to +125°C ambient range, used in battery-powered instrumentation requiring stable low-power reference.

For engineers reviewing the LM4041DADJH5TA datasheet, LM4041DADJH5TA pinout, LM4041DADJH5TA application, or LM4041DADJH5TA equivalent, key selection criteria include adjustable output range, SC70-5 footprint compatibility, capacitive-load stability without output capacitor, AEC-Q100 Grade 1 qualification, and micro-power operation down to 60 µA.

Technical Context

The LM4041DADJH5TA implements a bandgap-based shunt topology where cathode voltage is regulated by sinking current through an external series resistor. Its internal reference voltage (1.233 V at 100 µA) sets the lower bound of adjustable output, scaled by R1/R2 feedback ratio per V_OUT = V_REF × (1 + R1/R2).

It maintains regulation across 60 µA–12 mA reverse current while exhibiting low dynamic impedance (≤2 Ω at 1 mA), minimal voltage drift with cathode voltage change (−4 mV/V max), and long-term stability of 120 ppm over 1000 hours - all verified under −40°C to +125°C conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage Range	1.24 V to 10 V - set by external resistor divider; enables flexible system-level voltage scaling
Initial Tolerance	±1% at 25°C - ensures predictable accuracy at power-up before thermal stabilization
Temp Coefficient	±20 ppm/°C (max, −40°C to +125°C) - limits reference drift in automotive and industrial environments
Noise (10 Hz–10 kHz)	20 µV_RMS - supports high-resolution ADCs and precision analog signal chains
Operating Current	60 µA to 12 mA - allows ultra-low-power sensor nodes and high-current reference buffering
Dynamic Impedance	≤2.0 Ω at 1 mA - minimizes output voltage perturbation during load transients
Long-Term Stability	120 ppm (1000 hrs) - reduces calibration frequency in field-deployed equipment

Pinout & Package

LM4041DADJH5TA uses the SC70-5 surface-mount package (2.0 mm × 1.25 mm × 0.9 mm), with die attached to Pin 2 - requiring Pin 2 to be left floating or connected to Pin 1 per layout guidelines.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (ANODE)	Anode terminal	Connected to ground or low-impedance return path; electrically tied to Pin 2 in this variant
Pin 2 (CATHODE)	Cathode terminal	Main output node; voltage is regulated relative to ANODE; must be floated or shorted to Pin 1
Pin 3 (N/C)	No-connect	Internally unconnected; must remain unconnected on PCB
Pin 4 (N/C)	No-connect	Internally unconnected; must remain unconnected on PCB
Pin 5 (REF)	Reference feedback input	Connects to resistor divider junction; sets output voltage via V_OUT = V_REF × (1 + R1/R2)

Key Features

Feature	Design Value
No output capacitor required	Stable with >1 µF capacitive loads due to inherent bandwidth control - eliminates BOM cost and board space for decoupling cap
Adjustable output (1.24–10 V)	Enables single reference part to serve multiple rail voltages in multi-voltage systems - reduces inventory SKUs
AEC-Q100 Grade 1 qualified	Validated for automotive ambient temperatures (−40°C to +125°C) - supports engine bay and ADAS sensor modules
Low 60 µA minimum operating current	Permits use in energy-harvesting and coin-cell-powered devices where supply current is tightly constrained
20 ppm/°C tempco (max)	Meets tight accuracy budgets in portable test equipment and medical sensors without active compensation

Applications

Battery-Powered Portable Instrumentation

Precision Data Acquisition Systems

Use Scenario: Handheld multimeter with dual-range ADC requiring stable 2.5 V and 4.096 V references.

IC Role / Device Role / Timing Role: Adjustable shunt reference providing programmable full-scale voltage for successive-approximation ADC front-end.

Use Value: Single LM4041DADJH5TA replaces two fixed references, reducing component count and enabling auto-ranging via firmware-controlled resistor switching.

Use Scenario: 16-bit industrial data logger sampling thermocouples and strain gauges in remote locations.

IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference for sigma-delta ADC reference input and excitation source.

Use Value: 20 µV_RMS noise and 20 ppm/°C tempco ensure <0.01% measurement error across −25°C to +70°C operating range.

Automotive Cabin Control Modules

Wearable Health Monitoring Devices

Use Scenario: HVAC control unit monitoring cabin temperature, humidity, and air quality sensors.

IC Role / Device Role / Timing Role: AEC-Q100 qualified reference for sensor signal conditioning and microcontroller ADC reference.

Use Value: Grade 1 qualification and −40°C to +125°C operation guarantee accuracy over full vehicle lifetime without derating.

Use Scenario: ECG patch with coin-cell battery and ultra-low-power analog front-end.

IC Role / Device Role / Timing Role: Micro-power shunt reference supplying 1.8 V bias to op-amp stages and ADC reference.

Use Value: 60 µA minimum operating current extends battery life beyond 7 days while maintaining ±1% output accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable shunt voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLVH431AIDBVR	Fixed 1.24 V reference; requires external resistors for adjustment; higher min current (80 µA); 50 ppm/°C max tempco	Lacks factory-trimmed adjustability; less suitable for wide-output-range designs	Select when absolute lowest cost is prioritized over tempco and noise performance
MAX6008AEUR+T	Fixed 1.25 V output only; no adjustable variant; 75 ppm/°C max tempco; 35 µV_RMS noise	Not usable for >1.25 V outputs; requires separate reference per rail	Choose only for simple 1.25 V reference needs where SC70-5 footprint is mandatory

Compared with TLVH431AIDBVR and MAX6008AEUR+T, LM4041DADJH5TA offers superior temperature stability (20 vs. 50/75 ppm/°C), lower noise (20 vs. 35 µV_RMS), and true 1.24–10 V adjustability - making it optimal for multi-rail, high-accuracy, and automotive-grade applications.

Availability

LM4041DADJH5TA is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition systems, and automotive cabin control modules requiring stable component supply with guaranteed long-term availability.

Supply support for LM4041DADJH5TA 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 components for automotive, industrial, and consumer markets.

LM4041 belongs to Diodes' precision voltage reference product line, designed specifically for space-constrained, low-power applications demanding high initial accuracy, low temperature drift, and robust capacitive-load stability.

FAQ

What is the minimum cathode-to-anode voltage required for regulation?

The LM4041DADJH5TA begins regulating when cathode voltage exceeds 1.24 V relative to anode. Below this threshold, it behaves as an open circuit. Regulation is fully established above 1.24 V and remains stable up to 10 V, provided reverse current stays within 60 µA–12 mA.

Can Pin 2 and Pin 1 be shorted on the PCB?

Yes - Pin 2 (CATHODE) and Pin 1 (ANODE) must be either left floating or externally shorted per Diodes' layout guidance. This accommodates the internal die attachment to Pin 2 in the SC70-5 package, preventing unintended voltage drop or instability.

How does the reference voltage change with cathode voltage variation?

Voltage change is specified as ΔV_R/ΔV_K = −4.0 mV/V maximum over −40°C to +125°C. For example, increasing cathode voltage from 2 V to 5 V introduces ≤12 mV shift in reference output - critical for high-accuracy ratiometric sensing.

Is the LM4041DADJH5TA compatible with ceramic output capacitors?

Yes - the device is explicitly characterized for stability with ≥1 µF ceramic capacitors and does not require series resistance. This eliminates ESR dependency and simplifies layout for compact, high-frequency-stable reference designs.

LM4041DADJH5TA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Reference Type:: Shunt

Output Type:: Adjustable

Voltage - Output (Min/Fixed):: 1.24V

Voltage - Output (Max):: 10 V

Current - Output:: 12 mA

Tolerance:: ±1%

Temperature Coefficient:: 150ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 20µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 73 µA

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-70-5

LM4041DADJH5TA FAQ

1.How can I place an order for LM4041DADJH5TA through Aetrix?

Please submit a Request for Quotation (RFQ) for LM4041DADJH5TA 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 LM4041DADJH5TA reliable?

The price and inventory of LM4041DADJH5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041DADJH5TA is usually 5 days.

3.What payment methods are accepted for LM4041DADJH5TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DADJH5TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM4041DADJH5TA?

LM4041DADJH5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM4041DADJH5TA 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 LM4041DADJH5TA?

For technical support, including LM4041DADJH5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DADJH5TA requirements.

6.How does Aetrix verify that LM4041DADJH5TA is sourced from the original manufacturer or authorized distributors?

All LM4041DADJH5TA 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 LM4041DADJH5TA meets industry standards.

7.What is the process for return or replacement of LM4041DADJH5TA?

All LM4041DADJH5TA units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DADJH5TA, 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 LM4041DADJH5TA part is unused and in its original packaging.

Return procedure for LM4041DADJH5TA:

1.Submit a request within 90 days.

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

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