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2022-09-24 22:26:30
LT1431 - Programmable Reference
describe
The LT1431 is an adjustable shunt regulator with 100mA sink capability, 0.4% initial reference voltage tolerance, and 0.3% typical temperature stability. On-chip voltage divider resistors allow the LT1431 shunt regulator to be viewed as a 5V configuration, with an initial voltage tolerance of 1% without additional external components. By adding two external resistors, the output voltage can be set to any value between 2.5V and 36V. The nominal 100mA limit of internal current may be reduced by including an external resistor. A three-pin simplified version, the LT1431Z/IZ, is available as an adjustable reference application and is pin-compatible with the TL431.
Features guarantee an initial voltage tolerance of 0.4%
0.1W Typical Dynamic Output Impedance Fast Turn-On Sink Capability, 1mA to 100mA
Low reference voltage pin current
Applications Linear Regulators Adjustable Power Switching Power Supplies