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TMP709-Q1 Fiches technique(PDF) 11 Page - Texas Instruments |
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TMP709-Q1 Fiches technique(HTML) 11 Page - Texas Instruments |
11 / 18 page SET GND OT VCC HYST 0.1 …F RSET VIA to ground plane VIA to power plane 150 11 TMP709-Q1 www.ti.com SBOS829 – DECEMBER 2016 Product Folder Links: TMP709-Q1 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated 9 Power Supply Recommendations The TMP709-Q1 low supply current and supply range allow this device to be powered from many sources. Any significant noise on the VCC pin can result in a trip-point error. Minimize this noise by low-pass filtering the device supply (VCC) using a 150-Ω resistor and a 0.1-μF capacitor. 10 Layout 10.1 Layout Guidelines The TMP709-Q1 is extremely simple to lay out. Figure 7 shows the recommended board layout. 10.2 Layout Example Figure 7. Recommended Layout 10.3 Thermal Considerations The TMP709-Q1 quiescent current is typically 40 μA. The device dissipates negligible power when the output drives a high-impedance load. Thus, the die temperature is the same as the package temperature. In order to maintain accurate temperature monitoring, provide a good thermal contact between the TMP709-Q1 package and the device being monitored. The rise in die temperature as a result of self-heating is given by Equation 2: ΔTJ = PDISS × θJA where • PDISS = power dissipated by the device. • θJA = package thermal resistance. Typical thermal resistance for SOT-23 package is 217.9°C/W. (2) To limit the effects of self-heating, keep the output current at a minimum level. |
Numéro de pièce similaire - TMP709-Q1 |
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Description similaire - TMP709-Q1 |
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