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LT1431CS8#PBF is listed in the Voltage Reference range at ChipApex. The manufacturer field lists Analog Devices Inc.. Its product description is IC VREF SHUNT ADJ 0.4% 8SOIC. Review the specifications below when checking this part for your BOM.
Voltage Reference specifications for LT1431CS8#PBF
- Description：IC VREF SHUNT ADJ 0.4% 8SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SO
Voltage Reference datasheet and documents for LT1431CS8#PBF
Voltage Reference Overview
The LT1431CS8#PBF is an adjustable shunt voltage regulator manufactured by Analog Devices Inc., housed in an 8-lead plastic SOIC package. It features a guaranteed initial voltage tolerance of 0.4% and a typical temperature stability of 0.3%. The device supports a sink current capability ranging from 1mA to 100mA, with a maximum input voltage of 36V. It operates within a temperature range of 0°C to 70°C.
Voltage Reference Feature Summary
- Adjustable output voltage configuration using external resistors
- On-chip divider resistors for standalone 5V regulation without external components
- Fast turn-on response time
- Low reference pin bias current
Voltage Reference Applications
- Linear regulators
- Adjustable power supplies
- Switching power supplies
Voltage Reference Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and tape-and-reel availability if required. Confirm the CS8 designation matches the narrow SOIC package dimensions. Ensure the operating temperature grade aligns with system requirements, as other grades like IS8 cover wider ranges.
Voltage Reference Selection Notes
Select this component when a precision shunt regulator with high current sinking capability is needed. The 8-pin SOIC package facilitates surface-mount assembly. Consider the internal 5k-5k resistor network if a fixed 5V reference is sufficient, or utilize the REF pin for programmable outputs between 2.5V and 36V.
Voltage Reference Part Context
This part belongs to the LT1431 family of programmable references. It is pin-compatible with the TL431 in its 3-lead TO-92 variant but offers enhanced performance in the 8-pin configuration. The family includes variants with different temperature ratings and packaging options to suit various industrial and commercial applications.
Voltage Reference Replacement Considerations
LT1431IS8#PBF
Voltage Reference FAQ
How is the output voltage set?
The output voltage can be set to any value between 2.5V and 36V by adding two external resistors to the REF pin.
Can it operate as a fixed 5V regulator?
Yes, on-chip divider resistors allow it to be configured as a 5V shunt regulator with 1% initial voltage tolerance without additional external components.
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