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Product Detailed Parameters
- Description：IC VREF SHUNT 1% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：3V
- Voltage - Output (Max)：-
- 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：-
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Overview
The LM4040D30QDBZT is a precision micropower shunt voltage reference from Texas Instruments, offering a fixed output of 3 V with 1% initial accuracy. Housed in an SOT-23-3 surface-mount package, it operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 150 ppm/°C. Designed for automotive applications, it complies with AEC-Q100 standards. The device supports a maximum cathode current of 15 mA and requires a minimum operating current of 79 µA.
Feature Summary
- Automotive-grade reliability compliant with AEC-Q100 standards
- Micropower operation suitable for battery-powered systems
- Precision shunt regulation architecture
Applications
- Automotive electronic circuits requiring stable voltage references
- Portable devices utilizing low-power shunt regulators
- Industrial control systems needing high-temperature stability
Procurement Notes
Verify the specific suffix QDBZT against official datasheets to confirm automotive qualification and reel packaging specifications. Ensure compatibility with existing PCB footprints for SOT-23-3 packages. Cross-reference manufacturer documentation for any recent product change notices affecting pinout or electrical characteristics before finalizing procurement.
Selection Notes
Select this component when automotive certification is mandatory alongside precise 3 V regulation. It is appropriate for designs requiring operation up to 125°C ambient temperature. Consider the 15 mA current limit and 79 µA minimum load requirement during circuit design to ensure stable performance under varying load conditions.
Part Context
This part belongs to the LM4040 series of micropower shunt voltage references. The series provides various fixed voltage options and accuracy grades. The LM4040D30QDBZT specifically targets the 3 V output segment with automotive-grade durability, distinguishing it from standard commercial variants through its extended temperature range and qualification standards.
Replacement Considerations
LM4040D30QDBZR: Publicly confirmed substitute with identical electrical specifications and automotive qualification, differing only in tape-and-reel packaging quantity.
