器件名称: U2100B
功能描述: Timer Control for Triac and Relay
文件大小: 262.65KB 共14页
简 介:Features
Adjustable and Retriggerable Tracking Time Window Monitoring for Sensor Input Enable Input for Triggering Internal Noise Suppression (40 ms) and Retrigger Blocking (640 ms) Two- or Three-wire Applications
Applications
Motion Detectors Touch Sensors Timers
Timer Control for Triac and Relay U2100B
1. Description
The timer control circuit U2100B uses bipolar technology. It has different mode selections (zero voltage switch, phase control and relay control). The output stage is triggered according to input conditions. It can be used in triac application for two- or three-wire systems as a power switch.
Rev. 4769C–INDCO–07/05
Figure 1-1.
Block Diagram with External Circuit
8 C2 0.5 VRef + Trigger signal 6
-VRef
Supply voltage limitation Voltage control monitoring Sync Mode selection
2 -VS 4
C1 L R1 Rsync Load Z D1
Trigger window + -
Noise suppression 40 ms Retrigger delay 640 ms
Control logic
3 Output
RG
Vmains
5
0.65 VRef 1 GND N
Enable 0.6 VRef Ct 0.5 VRef 7 RC Oscillator Rt Divider 1:210 ON OFF
2
U2100B
4769C–INDCO–07/05
U2100B
2. Pin Configuration
Figure 2-1. Pinning DIP8/SO8
GND -VS OUTPUT SYNC 1 2 8 7 VREF OSC TRIG EN
U2100B
3 4 6 5
Table 2-1.
Pin 1 2 3 4 5 6 7 8
Pin Description
Symbol GND –VS OUTPUT SYNC EN TRIG OSC VREF Function Reference point Supply voltage Driver output Synchronization and mode selection Enable Input trigger signal RC oscillator Reference voltage
3
4769C–INDCO–07/05
3. General Description
The monostable in……