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U211B3 Datasheet

Phase Control Circuit - General Purpose Feedback

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U211B2/ B3
Phase Control Circuit - General Purpose Feedback
Description
The integrated circuit U211B2/ B3 is designed as a phase
control circuit in bipolar technology with an internal fre-
quency-voltage converter. Furthermore, it has an internal
control amplifier which means it can be used for speed-
regulated motor applications.
Features
D Internal frequency-to-voltage converter
D Externally-controlled integrated amplifier
D Overload limitation with a “fold back” characteristic
D Optimized soft-start function
D Tacho monitoring for shorted and open loop
D Automatic retriggering switchable
It has an integrated load limitation, tacho monitoring and
soft-start functions, etc. to realize sophisticated motor
control systems.
D Triggering pulse typ. 155 mA
D Voltage and current synchronization
D Internal supply-voltage monitoring
D Temperature reference source
D Current requirement 3 mA
Package: DIP18 - U211B2,
SO16 - U211B3
17(16)
1(1)
Voltage / Current
detector
5*)
Automatic
retriggering
Output
pulse
4(4)
11(10)
Control
+ amplifier
10(9)
14(13)
15(14)
Load limitation
speed / time
controlled
Phase
control unit
ö= f (V12)
Supply
voltage
limitation
Reference
voltage
Voltage
monitoring
6(5)
7(6)
3(3)
–VS
2(2)
GND
16(15)
controlled
current sink
Soft start
–VRef
12(11)
13(12)
Frequency-
to-voltage
converter
Pulse-blocking
tacho
monitoring
9(8) 8(7)
18*)
95 10360
Figure 1. Block diagram (Pins in brackets refer to SO16)
*) Pins 5 and 18 connected internally
TELEFUNKEN Semiconductors
Rev. A1, 29-May-96
1 (20)
TEMIC Semiconductors
TEMIC Semiconductors



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