Programmable shunt reference regulator provides an adjustable precision reference for linear and switching control circuits. The device uses a 2.5 V internal reference and supports programmable output voltages above the reference value with external resistors. Cathode current operation spans low milliampere bias currents up to high shunt currents for regulator and error-amplifier applications. The family is documented for multiple package and grade options, so exact package and temperature limits depend on the orderable suffix.
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| Device Function | Programmable shunt reference regulator |
| Reference Voltage | 2.5V |
| Programmable Output Voltage | 2.5 to 36V |
| Cathode Current Range | 1 to 100mA |
| Initial Voltage Tolerance | 0.4% |
| Dynamic Impedance | 0.3 typohm |
| Reference Input Current | 4 typµA |
| Output Noise Voltage | 60 typµV RMS |
| Temperature Coefficient | 50 typppm/°C |
These are design resources that include the Analog Devices LT1431
Design note for a notebook computer 5V regulator and 4-cell Ni-Cad charger using the LTC1155 dual MOSFET driver and LT1431 controller for high-side N-channel switching.
