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LM385PW-2-5 Datasheet(PDF) 3 Page - Texas Instruments |
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LM385PW-2-5 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 18 page LM2852.5, LM3852.5, LM385B2.5 MICROPOWER VOLTAGE REFERENCES SLVS023J − JANUARY 1989 − REVISED MARCH 2005 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Reverse current, IR 30 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Forward current, IF 10 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Notes 1 and 2): D package 97 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . LP package 140 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . PW package 149 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. Maximum power dissipation is a function of TJ(max),θJA,and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) − TA)/θJA. Operation at the absolute maximum TJ of 150°C can affect reliability. 2. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions MIN MAX UNIT IZ Reference current 0.02 20 mA TA Operating free-air temperature range LM285-2.5 −40 85 °C TA Operating free-air temperature range LM385-2.5, LM385B-2.5 0 70 °C electrical characteristics at specified free-air temperature PARAMETER TEST TA‡ LM285-2.5 LM385-2.5 LM385B-2.5 UNIT PARAMETER TEST CONDITIONS TA‡ MIN TYP MAX MIN TYP MAX MIN TYP MAX UNIT VZ Reference voltage IZ = 20 µA to 20 mA 25 °C 2.462 2.5 2.538 2.425 2.5 2.575 2.462 2.5 2.538 V αVZ Average temperature coefficient of reference voltage§ IZ = 20 µA to 20 mA Full range ±20 ±20 ±20 ppm/ °C Change in IZ = 20 µA 25 °C 1 2 2 ∆VZ Change in reference IZ = 20 µA to 1 mA Full range 1.5 2 2 mV ∆VZ reference voltage with current IZ = 1 mA 25 °C 10 20 20 mV voltage with current IZ = 1 mA to 20 mA Full range 30 30 30 ∆VZ/∆t Long-term change in reference voltage IZ = 100 µA 25 °C ±20 ±20 ±20 ppm/khr IZ(min) Minimum reference current Full range 8 20 8 20 8 20 µA zz Reference IZ = 100 A 25 °C 0.2 0.6 0.4 1 0.4 1 Ω zz Reference impedance IZ = 100 µA Full range 1.5 1.5 1.5 Ω Vn Broadband noise voltage IZ = 100 µA, f = 10 Hz to 10 kHz 25 °C 120 120 120 µV ‡ Full range is 0°C to 70°C for the LM385-2.5 and LM385B-2.5, and −40°C to 85°C for the LM285-2.5. § The average temperature coefficient of reference voltage is defined as the total change in reference voltage divided by the specified temperature range. |
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