My Inquiry
My Account
Analog Devices Inc./Maxim Integrated LM4040CIM3-5.0-T
- Part No.:
- LM4040CIM3-5.0-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040CIM3-5.0-T.pdf
- Description:
- PRECISION MICROPOWER SHUNT VREF
- Quantity:
- Payment:
- Shipping:
Inventory:3,800
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4040CIM3-5.0-T from Maxim Integrated is a precision 5.000V two-terminal shunt voltage reference in SC70-3 package, featuring ±0.5% initial accuracy, 100ppm/°C max temperature coefficient, 60μA–15mA operating current range, and guaranteed operation from –40°C to +85°C. It serves as a stable reference in portable battery-powered systems where space and accuracy are critical.
For engineers reviewing the LM4040CIM3-5.0-T datasheet, LM4040CIM3-5.0-T pinout, LM4040CIM3-5.0-T application, or LM4040CIM3-5.0-T equivalent, key selection criteria include reverse breakdown voltage tolerance over temperature, dynamic impedance at low currents, noise performance (80µVRMS), no-output-capacitor stability, and SC70 footprint compatibility with high-density PCB layouts.
Technical Context
The LM4040CIM3-5.0-T uses bandgap-based shunt regulation to maintain a precise 5.000V reverse breakdown voltage across its terminals when biased with 60μA to 15mA cathode-to-anode current. Its internal laser-trimmed resistor network ensures ±0.5% initial accuracy at +25°C, with total overtemperature tolerance of ±1.15% across –40°C to +85°C.
It exhibits low dynamic impedance (0.5Ω typ / 1.1Ω max at 1mA), wideband output noise of 80µVRMS (10Hz–10kHz), and stable operation with any capacitive load - eliminating need for external stabilization capacitors. The device is rated for continuous power dissipation up to 174mW at +70°C with 2.17mW/°C derating above that point.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V nominal; ±25mV (±0.5%) tolerance at +25°C; ±1.15% over –40°C to +85°C |
| Initial Accuracy | ±0.5% (C-grade); enables direct use in 12-bit ADC reference without trimming |
| Temp Coefficient | ≤100ppm/°C; contributes ≤±8.75mV drift over full temperature range |
| Operating Current | 60μA min to 15mA max; supports ultra-low-power sensor biasing and high-current DAC references |
| Dynamic Impedance | 0.5Ω typ / 1.1Ω max at 1mA; ensures <11mV output shift under 11mA load transients |
| Output Noise | 80µVRMS (10Hz–10kHz); suitable for precision instrumentation and low-noise analog front-ends |
| Package | SC70-3 (1.8mm × 1.8mm); 50% smaller than SOT23, ideal for space-constrained portable designs |
Pinout & Package
The LM4040CIM3-5.0-T is housed in a 3-pin SC70 surface-mount package (1.8mm × 1.8mm) with exposed pad not connected. Pin 3 is NC and must be left unconnected or tied to pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Cathode | Reverse-bias terminal; connects to higher-potential node (e.g., supply rail via series resistor) |
| 2 (–) | Anode | Reference ground terminal; connects to system ground or low-side load return path |
| 3 (N.C.) | No Connection | Must remain floating or shorted to pin 2; no internal connection; avoids parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 footprint | Enables placement in <2mm² board area - critical for wearables and compact IoT sensors |
| No external capacitor required | Guaranteed stability with any capacitive load simplifies layout and eliminates BOM cost/variation |
| Wide shunt current range | 60μA–15mA operation supports both micropower battery monitoring and high-accuracy data acquisition |
| Low 80µVRMS broadband noise | Meets SNR requirements for 16-bit SAR ADCs without additional filtering |
| Guaranteed –40°C to +85°C operation | Validated performance across industrial ambient conditions without derating |
Applications
| Portable Battery-Powered Equipment | Notebook Computers |
|---|---|
Use Scenario: Reference for fuel-gauge ICs and battery protection circuits in Bluetooth earbuds and smartwatches. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 5.000V reference for ADC measurement of cell voltage and temperature. Use Value: ±0.5% accuracy ensures <1% state-of-charge error over life; SC70 size fits tight battery compartment layouts. | Use Scenario: Precision reference for system power-rail monitors and embedded controller ADCs. IC Role / Device Role / Timing Role: Two-terminal shunt reference sourcing stable 5.000V for voltage margining and thermal sensing circuits. Use Value: 100ppm/°C tempco limits reference drift to <±0.43mV/°C, enabling accurate thermal throttling decisions. |
| Cell Phones | Industrial Process Controls |
Use Scenario: Reference for camera module auto-focus drivers and image sensor bias supplies. IC Role / Device Role / Timing Role: Low-noise 5.000V shunt reference powering precision current sources in AF actuators. Use Value: 80µVRMS noise prevents focus jitter; 60μA minimum current allows operation during deep-sleep modes. | Use Scenario: Calibration reference for 4–20mA transmitter front-ends in PLC I/O modules. IC Role / Device Role / Timing Role: Stable 5.000V reference for DAC output scaling and sensor excitation in harsh environments. Use Value: Guaranteed –40°C to +85°C operation ensures reliability in uncontrolled cabinet temperatures; 15mA capability drives heavy loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | Adjustable 2.5V–36V output; 0.5% initial accuracy; 100ppm/°C tempco; SOT23-3 | Requires two external resistors for 5.0V setting; higher minimum cathode current (80μA) | Choose when design flexibility or higher voltage options are needed; verify layout space for resistor placement |
| MAX6008AEUR+T | Fixed 5.0V; 0.2% initial accuracy; 50ppm/°C tempco; SOT23-3; 50μA–25mA range | Higher accuracy and lower tempco but larger SOT23 footprint and no SC70 option | Choose when tighter tolerance and lower drift are mandatory; accept larger board area and different package |
Compared with TLVH431ACDBVR and MAX6008AEUR+T, the LM4040CIM3-5.0-T offers the smallest footprint (SC70), fixed 5.000V output without external components, and optimal balance of accuracy, noise, and current range for space-constrained industrial and portable designs.
Availability
LM4040CIM3-5.0-T is available at Aetrix Electronics and suitable for portable battery-powered equipment, notebook computers, cell phones, and industrial process controls requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LM4040CIM3-5.0-T 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
Maxim Integrated is a semiconductor company specializing in analog and mixed-signal ICs for power, sensing, interface, and communication applications.
The LM4040 product line delivers precision micropower shunt voltage references optimized for space-constrained, battery-sensitive systems requiring stable, low-drift, capacitor-free reference performance across extended temperature ranges.
FAQ
What is the exact reverse breakdown voltage tolerance of LM4040CIM3-5.0-T at +25°C?
The LM4040CIM3-5.0-T has a reverse breakdown voltage of 5.000V with ±25mV (±0.5%) tolerance at +25°C, as specified in the Electrical Characteristics table for the C-grade variant. This corresponds to a guaranteed range of 4.975V to 5.025V under nominal conditions, confirmed by Maxim's production testing and datasheet Table on page 7.
Does LM4040CIM3-5.0-T require an external output capacitor for stability?
No, the LM4040CIM3-5.0-T does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including zero capacitance. This is explicitly stated in the General Description and Applications Information sections, and verified by typical operating characteristics showing stable response across 0–1µF output capacitance in Figures LM4040-14 and LM4040-15.
What is the minimum operating current for LM4040CIM3-5.0-T, and how does it vary with temperature?
The LM4040CIM3-5.0-T requires a minimum operating current of 60μA across its full rated temperature range of –40°C to +85°C. The datasheet specifies IRMIN = 54μA (min) / 80μA (max) at +25°C for the 5.0V C-grade in SC70, with guaranteed 60μA minimum under all conditions - ensuring reliable turn-on even at temperature extremes and low supply voltages.
Can LM4040CIM3-5.0-T be used in applications requiring operation beyond +85°C?
No - the LM4040CIM3-5.0-T is rated for –40°C to +85°C only (I-grade). For extended temperature operation up to +125°C, the LM4040CEX3-5.0+T (E-grade, SC70) or LM4040CEM3-5.0+T (E-grade, SOT23) must be selected. The "I" suffix in LM4040CIM3-5.0-T explicitly denotes the industrial temperature range, and exceeding +85°C violates Absolute Maximum Ratings.
What is the function of Pin 3 on LM4040CIM3-5.0-T, and how should it be handled on the PCB?
Pin 3 of the LM4040CIM3-5.0-T is labeled N.C. (No Connection) and must be left unconnected or tied directly to Pin 2 (anode). As confirmed in the Pin Description section (page 11), this pin has no internal connection; connecting it elsewhere may introduce noise or leakage paths. The SC70 top marking "ACB" also correlates to this configuration per Maxim's ordering guide.
LM4040CIM3-5.0-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040CIM3-5.0-T FAQ
1.How can I place an order for LM4040CIM3-5.0-T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040CIM3-5.0-T 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 LM4040CIM3-5.0-T reliable?
The price and inventory of LM4040CIM3-5.0-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040CIM3-5.0-T is usually 5 days.
3.What payment methods are accepted for LM4040CIM3-5.0-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040CIM3-5.0-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040CIM3-5.0-T?
LM4040CIM3-5.0-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040CIM3-5.0-T 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 LM4040CIM3-5.0-T?
For technical support, including LM4040CIM3-5.0-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040CIM3-5.0-T requirements.
6.How does Aetrix verify that LM4040CIM3-5.0-T is sourced from the original manufacturer or authorized distributors?
All LM4040CIM3-5.0-T 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 LM4040CIM3-5.0-T meets industry standards.
7.What is the process for return or replacement of LM4040CIM3-5.0-T?
All LM4040CIM3-5.0-T units undergo pre-shipment inspection (PSI). If there is an issue with LM4040CIM3-5.0-T, 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 LM4040CIM3-5.0-T part is unused and in its original packaging.
Return procedure for LM4040CIM3-5.0-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040CIM3-5.0-T Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
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.
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…
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…
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…
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
