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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% SOT23-3
- Series：-
- Mfr：Diotec Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3 (TO-236)
- Grade：-
- Qualification：-
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Overview
The MMTL431A is an adjustable precision diode shunt regulator manufactured by Diotec Semiconductor in a SOT-23 (TO-236) package. It features a reference voltage of 2.495 V with a narrow tolerance band of ±0.5%. The device operates within a cathode voltage range of VREF to 36 V and supports a cathode current from 1 mA to 100 mA. Key electrical characteristics include a dynamic output impedance of approximately 0.15 Ω, a pulse response time of 1 µs, and a maximum junction temperature of 150°C. It is designed for commercial and industrial applications.
Feature Summary
- Temperature compensated design ensuring stable performance across operating ranges
- Low output impedance for precise regulation
- Narrow voltage tolerance band for high accuracy
- RoHS compliant construction without exemptions
Applications
- Precision voltage reference for voltage regulators and comparators
- Replacement for low voltage Zener diodes
- Low device-count power supply for microcontrollers
- Converter secondary side control
Procurement Notes
Verify the specific suffix when ordering. Standard versions are designated as MMTL431A. Automotive-grade variants require distinct suffixes: -Q indicates AEC-Q100 compliance, while -AQ denotes AEC-Q100 qualification. Confirm these markings align with project reliability requirements before procurement.
Selection Notes
Select the MMTL431A for applications requiring a stable, adjustable shunt reference. Ensure the load capacitance exceeds 5 µF for stable operation. Verify that the cathode current remains between 1 mA and 100 mA. Consider the MMTL431B variant if a lower minimum regulation current is necessary for the specific circuit design.
Part Context
This component belongs to the MMTL431 series of adjustable precision diode shunt regulators produced by Diotec Semiconductor. The series includes variations such as the MMTL431B and reverse-pinning versions like the MMTL431AR. These devices are widely used in standard commercial and industrial electronic designs requiring reliable voltage referencing.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation.
FAQ
What is the minimum regulation current for the MMTL431A?
The minimum regulation current (IK(min)) for the MMTL431A is 0.45 mA.
How does the MMTL431A differ from the MMTL431B?
The MMTL431B features a significantly lower minimum regulation current of 0.03 mA compared to the 0.45 mA of the MMTL431A.
Is the MMTL431A suitable for automotive applications?
Standard MMTL431A units are for commercial/industrial use. Automotive suitability requires the -Q (compliant) or -AQ (qualified) suffixes indicating AEC-Q100 standards.
