U211B ATMEL Corporation, U211B Datasheet - Page 15

• Manufacturer Part Number: U211B
• Description: as U209B + Foldback
• Manufacturer: ATMEL Corporation

The switch-off level at maximum load shows in principle
the same speed dependency as the original version (see
figure 2), but when reaching the maximum load, the
motor is switched off completely.
Rev. A4, 03-Aug-01
Figure 25. Speed control, automatic retriggering, load switch-off, soft start
This function is effected by the thyristor (formed by T
and T
typ. 7.4 V (reference point Pin 16). The circuit is thereby
switched in the “stand-by mode” over the release Pin 18.
2)
which ignites when the voltage at Pin 15 reaches
U211B
15 (21)
1