器件名称: U2102B
功能描述: Multifunction Timer IC
文件大小: 331.49KB 共19页
简 介:Features
Integrated Reverse Phase Control Mode Selection:
– Zero-voltage Switch with Static Output – Two-stage Reverse Phase Control with Switch-off – Two-stage Reverse Phase Control with Dimming Function Current Monitoring: – High-speed Short-circuit Monitoring with Output – High-current Monitoring with Integrating Buffer Integrated Chip Temperature Monitoring Adjustable and Retriggerable Tracking Time External Window Adjustment for Sensor Input Enable Input for Triggering
Multifunction Timer IC U2102B
Applications
Two- or Three-wire Applications Motion Detectors Time-delay Relays Dimmers Reverse Phase Controls Timers
1. Description
The timer control circuit U2102B is based on bipolar technology. The output stage can switch either a MOSFET or an IGBT. Two sensor inputs and the retriggerable and adjustable tracking time useful for a wide range of applications. By using the reverse phase-control technique, the resistive load can be dimmed without the need of a compensation inductance. The integrated current monitoring function provides a very fast switch-off in case of a short-circuit condition. No additional fuse is needed.
Rev. 4767B–INDCO–10/05
Figure 1-1.
Block Diagram
1 VRef Voltage monitoring 16 Synchronization
2 3 4
Reverse phase control
15 Voltage limitation 13
5 RC oscillator
Control Divider logic
Push pull
14
12 6 Programing Current monitoring 11
Triggering with buffers 7 8 9
Temperature monitoring
Test logic 10
2
U2102B
4767B–INDCO……
