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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：36 V
- Current - Output：100 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 ATL431AQDBZR is an automotive-grade, high-bandwidth, low-quiescent current programmable shunt regulator manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 36 V and provides an initial accuracy of 1%. The device features a temperature coefficient of 66 PPM/°C and supports a maximum cathode current of 15 mA. It is housed in a compact SOT-23-3 surface-mount package and is qualified for operation across an extended temperature range from -40°C to +125°C.
Feature Summary
- Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments.
- High bandwidth capability suitable for demanding feedback loop applications requiring fast transient response.
- Low quiescent current design optimizes power efficiency in battery-operated or energy-sensitive systems.
Applications
- Automotive power supply regulation circuits
- Battery management system monitoring
- Industrial control system voltage references
Procurement Notes
Verify the specific suffix 'Q1' indicates automotive grade compliance when sourcing. Confirm the 'LI' variant designation if low quiescent current is critical for the application. Ensure the SOT-23-3 package matches the PCB footprint requirements. Check RoHS status against environmental regulations applicable to the target market.
Selection Notes
Select this component when automotive reliability and high bandwidth are required alongside low power consumption. Compare against standard TL431 variants if industrial temperature ranges suffice. Consider the 1% initial accuracy for precision reference needs. Evaluate the 15 mA sink current limit against load requirements.
Part Context
This part belongs to the ATL431 family of programmable shunt regulators designed specifically for automotive applications. It shares functional similarities with the TL431 series but offers enhanced performance characteristics including lower quiescent current and higher bandwidth. The device serves as a precise voltage reference and adjustable zener diode alternative in modern electronic designs.
Replacement Considerations
ATL431LIAQDBZRQ1: Offers lower quiescent current while maintaining automotive qualification and similar electrical characteristics.
FAQ
What is the maximum cathode current for the ATL431AQDBZR?
The maximum cathode current is specified as 15 mA according to the manufacturer's datasheet.
Does the ATL431AQDBZR support shutdown functionality?
No, the device does not include a shutdown pin or feature; it operates continuously once powered.
