L6228 STMicroelectronics, L6228 Datasheet - Page 18

• Manufacturer Part Number: L6228
• Description: DMOS DRIVER FOR BIPOLAR STEPPER MOTOR
• Manufacturer: STMicroelectronics

L6228
Figure 21. t
Figure 22. t
THERMAL PROTECTION
In addition to the Ovecurrent Protection, the L6228 integrates a Thermal Protection for preventing the device
destruction in case of junction over temperature. It works sensing the die temperature by means of a sensible
element integrated in the die. The device switch-off when the junction temperature reaches 165°C (typ. value)
with 15°C hysteresis (typ. value).
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DISABLE
DELAY
versus C
versus C
1 1 0
1 1 0
1 0 0
1 0 0
3
3
10
10
0.1
10
1
1
1
1
1
1
EN
EN
(V
and R
DD
= 5V).
EN
R
R
(V
E N
E N
DD
= 2 2 0 k
= 2 2 0 k
= 5V).
C
C
E N
E N
Cen [nF]
1 0
1 0
10
[n F ]
[n F ]
R
R
E N
E N
= 1 0 0 k
= 1 0 0 k
1 0 0
1 0 0
100
R
R
R
R
R
R
E N
E N
E N
E N
E N
E N
= 4 7 k
= 4 7 k
= 3 3 k
= 3 3 k
= 1 0 k
= 1 0 k