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LT1431CS8

製品説明
仕様・特性

LT1431 Programmable Reference Features Description n n n n n The LT®1431 is an adjustable shunt voltage regulator with 100mA sink capability, 0.4% initial reference voltage tolerance and 0.3% typical temperature stability. On-chip divider resistors allow the LT1431 to be configured as a 5V shunt regulator, with 1% initial voltage tolerance and requiring no additional external components. By adding two external resistors, the output voltage may be set to any value between 2.5V and 36V. The nominal internal current limit of 100mA may be decreased by including one external resistor. n Guaranteed 0.4% Initial Voltage Tolerance 0.1Ω Typical Dynamic Output Impedance Fast Turn-On Sink Current Capability, 1mA to 100mA Low Reference Pin Current Available in J8, N8, S8 or 3-Lead TO-92 Z Packages Applications Linear Regulators Adjustable Power Supplies n Switching Power Supplies n n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. A simplified 3-pin version, the LT1431CZ/LT1431IZ, is available for applications as an adjustable reference and is pin compatible with the TL431. Typical Application Isolated 5V Regulator + 5V + VIN SWITCHING REGULATOR VREF vs Temperature 2.5025 2.5000 – 2.4975 RTOP V+ COMP VREF (V) 5V COLL 2.4950 2.4925 REF + 2.4900 gm = 4mA/V 2.4875 –50 –25 – RMID 50 25 75 0 TEMPERATURE (°C) 100 125 LT1431 TA01b 2.5V LT1431 GND-S GND-F LT1431 TA01 1431fe 1

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