U211B ATMEL Corporation, U211B Datasheet

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U211B

Manufacturer Part Number
U211B
Description
as U209B + Foldback
Manufacturer
ATMEL Corporation
Datasheet

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Phase-Control IC – Tacho Applications/Overload Limitation
Description
The integrated circuit U211B is designed as a phase-con-
trol circuit in bipolar technology with an internal
frequency-voltage converter. Furthermore, it has an inter-
nal control amplifier which means it can be used for
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
Block Diagram
Order Information
Rev. A4, 03-Aug-01
Extended Type Number
U211B-xFPG3
U211B-xFP
U211B-x
11(10)
14(13)
15(14)
10(9)
+
Load limitation
Voltage / current
current sink
speed / time
controlled
controlled
17(16)
detector
Control
amplifier
Figure 1. Block diagram (Pins in brackets refer to SO16)
1(1)
12(11)
*) Pins 5 and 18 connected internally
–V
Ref
Package
Soft start
DIP18
SO16
SO16
control unit
ö
= f (V
13(12)
Automatic
retriggering
Phase
-
12
speed-regulated motor applications.
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
5*)
)
Frequency-
to-voltage
converter
9(8)
Tube
Tube
Taped and reeled
8(7)
Pulse-blocking
monitoring
Reference
monitoring
limitation
voltage
Voltage
voltage
Output
Supply
pulse
tacho
3 mA
Remarks
16(15)
18*)
4(4)
6(5)
7(6)
3(3)
2(2)
–V S
GND
U211B
1 (21)

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