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Product Detailed Parameters
- Description：IC VREF SHUNT 2.5V SC70
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- 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：SOT-323-3
- Grade：-
- Qualification：-
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Overview
The LM4040DELT-2.5 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed 2.5V output. It features ±1% initial accuracy at 25°C and operates within an industrial temperature range of -40°C to +125°C. The device exhibits a maximum temperature coefficient of 70 ppm/°C and ultra-low operating current of 10µA at 25°C. Packaged in SOT-23-3L for surface mount applications, it maintains stability with capacitive loads and offers typical low-frequency noise of 10µVp-p.
Feature Summary
- Ultra-low power consumption suitable for battery-operated designs
- High precision with stable performance under capacitive loading
- Compact surface-mount package optimized for space-constrained PCB layouts
Applications
- Portable battery-powered equipment
- Data acquisition systems
- Instrumentation circuits
Procurement Notes
Verify the specific suffix 'D' confirms the ±1% accuracy grade against the datasheet. Ensure the 'LT' designation matches the required tape and reel packaging format. Confirm the manufacturer source aligns with STMicroelectronics specifications for the LM4040 series to guarantee parameter consistency.
Selection Notes
Select this component when ±1% tolerance is sufficient for the application requirements. It is appropriate for designs prioritizing minimal quiescent current over higher precision grades. Consider the SOT-23-3L footprint constraints and verify thermal management needs within the specified industrial temperature range.
Part Context
This part belongs to the LM4040 family of micropower shunt references. The 'D' suffix denotes the ±1% accuracy variant, distinguishing it from higher precision options like the A (±0.1%) or B (±0.2%) grades. It shares core electrical characteristics with the broader series while offering cost-effective precision for less critical reference applications.
Replacement Considerations
LM4040BET-2.5: Higher precision ±0.2% version. LM4040AELT-2.5: Highest precision ±0.1% version. TS4040EILT-2.5: Lower precision ±1% version with different temperature coefficient.
