80310 Datasheet, PDF (25/31 Pages) Freescale Semiconductor, Inc – Alternator Regulator with LIN High side field driver

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