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Product Detailed Parameters
- Description：IC VREF SHUNT 1% SC70-3
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-70, SOT-323
- Supplier Device Package：SC-70-3
- Grade：-
- Qualification：-
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Overview
The LM4040DEX3-3.3+T is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse-breakdown output voltage of 3.3V with an initial accuracy of 1% and a maximum temperature coefficient of 150ppm/°C. The device operates within a temperature range of -40°C to +125°C and features a wide operating current range from 60µA to 15mA. It is housed in a subminiature 3-pin SC70 surface-mount package.
Feature Summary
- Ultra-small 3-pin SC70 package designed for space-critical applications
- Stable operation without requiring external stabilizing capacitors
- Capable of tolerating any capacitive load directly at the output
Applications
- Portable, battery-powered equipment
- Notebook computers
- Cell phones
- Industrial process controls
- Automotive systems
Procurement Notes
Verify that the specific part number matches the required electrical specifications, particularly the 1% initial accuracy and 150ppm/°C temperature coefficient. Confirm the SC70 package type and the extended industrial temperature range (-40°C to +125°C) align with the design requirements. Ensure compliance with lead-free/RoHS standards as indicated by the suffix.
Selection Notes
Select this component when a compact footprint is necessary alongside stable voltage referencing. The D grade offers 1% accuracy suitable for general-purpose applications. Consider the thermal derating limits if operating near the maximum junction temperature or high ambient conditions. Verify that the source resistance allows maintaining the minimum operating current while preventing excessive power dissipation.
Part Context
This component belongs to the LM4040 family of micropower shunt voltage references. The series includes various grades (A, B, C, D) offering different accuracy levels and temperature coefficients. The 'E' designation indicates the extended temperature range variant, while the 'X3' suffix specifies the SC70 package configuration.
Replacement Considerations
LM4040DIX3-3.3+T
FAQ
Does the LM4040DEX3-3.3+T require an external capacitor for stability?
No, the device does not require an external stabilizing capacitor and remains stable with any capacitive load.
What is the pin configuration for the SC70 package?
Pin 1 is the positive terminal, Pin 2 is the negative terminal, and Pin 3 is No Connection (N.C.). Pin 3 must be left unconnected or connected to Pin 2.
