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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SC70-6
- Series：-
- Mfr：Texas Instruments
- 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：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：6-TSSOP, SC-88, SOT-363
- Supplier Device Package：SC-70-6
- Grade：-
- Qualification：-
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Overview
The TL431ACDCKR is a precision adjustable shunt voltage reference manufactured by Texas Instruments. It operates within an input voltage range of 2.50V to 36.0V and provides an adjustable output voltage from 2.495V to 36V. The device supports a maximum cathode current of 100 mA with a minimum operating current of 600 µA. It features an initial accuracy tolerance of ±1% and a temperature coefficient of 92 ppm/°C. The component is housed in a surface-mount SC-70-6 package and functions within a temperature range of 0°C to 70°C.
Feature Summary
- Provides precise programmable reference voltage functionality via external resistor divider networks
- Delivers sharp turn-on characteristics compared to traditional temperature compensated Zener diodes
- Maintains high voltage stability and accuracy across the operational temperature range
Applications
- Voltage regulation in switching power supplies
- Portable equipment power management circuits
- Process control loop references
Procurement Notes
Verify the specific suffix 'CKR' confirms the SC-70-6 surface mount package and tape-and-reel delivery format. Confirm that the 'A' grade designation aligns with the required ±1% initial accuracy specification for the target application. Ensure compatibility with RoHS3 compliance standards if mandated by the end product requirements.
Selection Notes
Select this component when a compact surface-mount solution is required for precision voltage referencing. The SC-70-6 package offers space efficiency for portable designs. Consider the ±1% tolerance and 92 ppm/°C temperature coefficient against circuit sensitivity requirements. Verify that the 100 mA cathode current capability meets the load demands of the shunt regulator topology.
Part Context
This device belongs to the TL431 family of adjustable precision shunt regulators originally released in 1978 as an improvement over the TL430. These three-terminal devices are widely utilized as voltage references in various power supply architectures due to their superior accuracy and stability compared to standard Zener diodes.
Replacement Considerations
Direct substitutes include the TL431ACDCKTE4, though it is obsolete. Alternative sources may include STMicroelectronics parts such as the TL431ACCT or TL431AICT.
