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CMPWR150TOT Datasheet(PDF) 8 Page - California Micro Devices Corp |
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CMPWR150TOT Datasheet(HTML) 8 Page - California Micro Devices Corp |
8 / 8 page ©1999 California Micro Devices Corp. All rights reserved. 9/99 215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 8 CMPWR150 CALIFORNIA MICRO DEVICES The CMPWR150TO therefore requires no additional heat sinking. All thermal characteristics were measured with the TO-263 package using minimum size solder pads and tab. Measurements showing performance up to maximum junction temperature of 125°C were performed under light load conditions (5mA). This allows the ambient temperature to be representative of the internal junction temperature. Output Voltage vs. Temperature. Figure 12 shows the regulator VOUT performance up to the maximum rated junction temperature. The overall 100°C variation in junction temperature causes an output voltage change of about 30mV, reflecting a voltage temperature coefficient of 90ppm/°C. Output Voltage (500mA) vs. Temperature. Figure 13 shows the regulator steady state performance when fully loaded (500mA) in an ambient temperature up to the rated maximum of 70°C. The output variation at maximum load is approximately 25mV across the normal temperature range. Typical Thermal Characteristics (continued) Figure 12. Output Voltage vs. Temperature. Thresholds vs. Temperature. Figure 14 shows the regulator select/deselect threshold variation up to the maximum rated junction temperature. The overall 100°C change in junction temperature causes a 30mV variation in the select threshold voltage (regulator enable). The deselect threshold level varies about 50mV over the 100°C change in junction temperature. This results in the built- in hysteresis having minimal variation over the entire operating junction temperature range. Figure 14. Thresholds vs. Temperature. Figure 13. Output Voltage (500mA) vs. Temperature. |
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