onsemi CA3059
the CA3059 directly from an AC line.APPLICATIONS
:● Relay Control
● Valve Control
● Heater Control
● Lamp Control
● On−Off Motor Switching
● Differential Comparator with Self−Contained Power Supply for Industrial
APPLICATIONS
● Synchronous Switching of Flashing Lights ZERO VOLTAGE SWITCH SEMICONDUCTOR TECHNICAL DATA RS 5 AC Input Limiter AC Input Voltage 100 μF + 15 − V * RX 12 DC Mode or 400 Hz Input RP 14 Protection Circuit 13 + On/Off Sensing Amp 9 − 10 VCC 11 Power Supply Zero Crossing Detector 2 VCC VCC Current RL Boost 3 MT2 Triac 4 Drive MT1 Gate * NTC Sensor Gnd 7 8 1 Inhibit 6 External Trigger Figure 1. Representative Block Diagram AC Input Voltage (50/60 Hz) Vac 24 120 208/230 277 Input Series Resistor (RS) kΩ 2.0 10 20 25 Dissipation Rating for RS W 0.5 2.0 4.0 5.0 14 1 PLASTIC PACKAGE CASE 646 ORDERING INFORMATION Operating Device Temperature Range Package CA3059 TA = − 40° to +85°C Plastic DIP FUNCTIONAL BLOCKDESCRIPTION
1. Limiter−Power Supply — Allows operation of the CA3059 directly from an AC line. Suggested dropping resistor (RS) values are given in the table below.