ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC VREF SHUNT 1% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：5V
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
Download product information
Overview
The LM4040DEM3-5.0 is a precision micropower shunt voltage reference from Texas Instruments, providing a fixed 5 V output in a compact SOT-23 package. It operates within an industrial temperature range of -40°C to +85°C and supports a reverse current up to 15 mA. The device features a maximum temperature coefficient of 150 ppm/°C and an initial accuracy of ±1%. Designed for space-critical applications, it eliminates the need for external stabilizing capacitors while tolerating capacitive loads.
Feature Summary
- Eliminates the need for external stabilizing capacitors
- Tolerates capacitive loads without instability
- Utilizes Zener-zap reverse breakdown voltage trim for high accuracy
Applications
- Portable, battery-powered equipment
- Data acquisition systems
- Instrumentation
- Process controls
- Precision audio components
Procurement Notes
Verify the specific suffix 'DEM3' corresponds to the D-grade tolerance (±1%) and E-grade temperature rating (-40°C to +125°C) if extended range is required, as datasheet tables indicate 'E' denotes extended temperature grade. Confirm the 'M3' suffix indicates the SOT-23 package. Ensure the ordering part number matches the exact voltage and tolerance requirements for your design.
Selection Notes
Select this component when a fixed 5 V reference with ±1% initial accuracy is sufficient. It is suitable for designs requiring operation across the full industrial temperature range. Consider the D-grade specifications for temperature coefficients and load regulation if operating conditions vary significantly. Verify that the 15 mA maximum current capability meets the circuit's shunt current requirements.
Part Context
This device belongs to the LM4040-N family of precision micropower shunt voltage references. The family offers various fixed voltages including 2.048 V, 2.5 V, 3 V, 4.096 V, 5 V, 8.192 V, and 10 V. It is available in sub-miniature packages such as SC70, SOT-23, and TO-92, making it ideal for space-constrained PCB layouts.
Replacement Considerations
LM4040CEM3-5.0/NOPB
FAQ
Does the LM4040DEM3-5.0 require an external capacitor for stability?
No, the advanced design of the LM4040-N series eliminates the need for an external stabilizing capacitor.
What is the minimum operating current for the 5 V version?
The minimum operating current for the 5 V LM4040-N is 74 μA at 25°C.
