U2100B
Timer Control for Triac and Relay
Description
The timer control circuit, U2100B, uses bipolar technol-
ogy. It has different mode selections (Zero voltage switch,
Phase control, Relay control). The output stage is
triggered according to input conditions. It can be used in
triac application for two or three wire system as a power
switch.
Features
D
Adjustable and retriggerable tracking time
D
Window monitoring for sensor input
D
Enable input for triggering
D
Internal noise suppression (40 ms) and retrigger
blocking (640 ms)
Applications
D
Motion detectors
D
Touch sensors
D
Timer
D
Two or three wire application
Package:
DIP8, SO8
8
–V
Ref
C
2
0.5 V
Ref
+
–
Trigger
signal
6
Trigger
window
+
–
5
0.6 V
Ref
Supply voltage
limitation
Voltage control
monitoring
Sync
Mode
selection
2
–V
S
4
C
1
L
R
1
R
sync
Load
Z
D
1
Noise
suppression
40 ms
Retrigger
delay
640 ms
Control
logic
3
Output
R
G
V
mains
1
En-
able
C
t
7
RC Oscillator
R
t
95 9876
GND
0.6 V
Ref
0.5 V
Ref
ON
OFF
Divider 1:2
10
N
Figure 1. Block diagram with external circuit
TELEFUNKEN Semiconductors
Rev. A1, 30-May-96
1 (9)
TEMIC [ TEMIC SEMICONDUCTORS ]
