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UM1770Y-19 Datasheet(PDF) 5 Page - Union Semiconductor, Inc. |
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UM1770Y-19 Datasheet(HTML) 5 Page - Union Semiconductor, Inc. |
5 / 13 page ________________________________________________________________________ http://www.union-ic.com Rev.05 Jan.2015 5/13 UM1770 Absolute Maximum Ratings (Note 1) Symbol Parameter Value Unit VIN Supply Voltage on IN Pin -0.3 to +7.5 V V SHDN ___________ Voltage on SHDN ___________ Pin -0.3 to +7.5 V VOUT Voltage on OUT Pin -0.3 to +7.5 V VFB Voltage on FB Pin -0.3 to +7.5 V TJ Operating Junction Temperature (Notes 2, 3) -40 to +125 °C TSTG Storage Temperature Range -65 to +150 °C TL Lead Temperature for Soldering 10 seconds +300 °C PD (Notes 4) Power Dissipation@25°C DFN6 2.0×2.0 0.9 W SOT89-5 1.5 θ JA Package Thermal Resistance DFN6 2.0×2.0 110 °C/W SOT89-5 66 Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The UM1770 is tested and specified under pulse load conditions such that TJ≈TA. Specifications over the –40℃ to 125℃ operating junction temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: This IC includes over-temperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125℃ when over-temperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 4: The maximum allowable power dissipation of any TA (ambient temperature) is PDMAX = (TJMAX - TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature and the regulator will go into thermal shutdown. |
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