CMPWR280TB Ver la hoja de datos (PDF) - California Micro Devices Corp

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CMPWR280TB

1.5A SmartOR™ Dual Regulator with VAUX Drive

California Micro Devices Corp 

Typical Thermal Characteristics (cont’d)

Thresholds vs. Temperature. Figure 21 shows the

regulator select/deselect threshold variation up to the

maximum rated junction temperature. The overall

125°C change in junction temperature causes a 30mV

variation in the select threshold voltage (regulator

enable). The deselect threshold level varies about

30mV over the 125°C change in junction temperature.

This results in the built-in hysteresis having minimal

variation over the entire operating junction temperature

range.

4.8

4.7

Vselect

4.6

4.5

4.4

4.3

Vdeselect

4.2

4.1

-25

0

25

50

75 100 125 150

Junction Temperature [°C]

Figure 21. Threshold vs. Temperature

CMPWR280

© 2004 California Micro Devices Corp. All rights reserved.

08/16/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 11

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