80310_12 Datasheet, PDF (25/31 Pages) Freescale Semiconductor, Inc – Alternator Regulator with LIN

FUNCTIONAL DEVICE OPERATION
THERMAL COMPENSATION
THERMAL COMPENSATION
This function is activated when internal temperature is
above thermal threshold (135,145,150, or 160 degrees). In
this case, the V setting fixed by the LIN or by default is
compensated to reduce internal temperature. The de-rating
is calculated depending on the 4 categories of V setting.
Figure 11. Thermal Compensation
Table 15. Thermal Compensation
Ptc (mV/degree)
Thermal Threshold (degrees)
Vset[5:4]
Vset (V)
135
145
150
160
00
10.6-12.1 V
50
50
50
100
01
12.2-13.7 V
100
100
100
200
10
13.8-15.3 V
100
200
200
400
11
15.4-16 V
200
200
200
400
Analog Integrated Circuit Device Data
Freescale Semiconductor
80310
25