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LM22676-Q1 데이터시트(PDF) 4 Page - Texas Instruments |
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LM22676-Q1 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 27 page LM22676 LM22676-Q1 SNVS587K – SEPTEMBER 2008 – REVISED APRIL 2013 www.ti.com Electrical Characteristics (continued) Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C to +125°C. Minimum and Maximum limits are ensured through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TA = TJ = 25°C, and are provided for reference purposes only. Unless otherwise specified: VIN = 12V. Symbol Parameter Conditions Min(1) Typ(2) Max(1) Units VEN Enable Threshold Voltage Falling 1.3 1.6 1.9 V VENHYST Enable Voltage Hysteresis 0.6 V IEN Enable Input Current EN Input = 0V 6 µA TSD Thermal Shutdown Threshold 150 °C θJA Thermal Resistance TJ Package Junction to ambient 22 °C/W thermal resistance(3) θJA Thermal Resistance MR Package Junction to ambient 60 °C/W thermal resistance(4) (3) The value of θJA for the PFM (TJ) package of 22°C/W is valid if package is mounted to 1 square inch of copper. The θJA value can range from 20 to 30°C/W depending on the amount of PCB copper dedicated to heat transfer. See application note AN-1797 (SNVA328) for more information. (4) The value of θJA for the SO PowerPAD exposed pad (MR) package of 60°C/W is valid if package is mounted to 1 square inch of copper. The θJA value can range from 42 to 115°C/W depending on the amount of PCB copper dedicated to heat transfer. 4 Submit Documentation Feedback Copyright © 2008–2013, Texas Instruments Incorporated Product Folder Links: LM22676 LM22676-Q1 |
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