7~40V Input, Energy-saving Controller for Relay -SCM1502A
Introduction of Energy-saving Controller for Relay -SCM1502A
After SCM1501B with 16.5V ~ 500V input was launched, it received a warm response from the market. Therefore, 7V ~ 40V SCM1502A is launched to meet DC contactor, relays, solenoid valves, and other applications.
The SCM1502A is energy-saving control IC for relay, which can reduce the pick-up and holding power consumption. It has a built-in high-voltage startup circuit that can quickly start the controller with a charging current of above 8mA within the input voltage range of 7V~40V, so as to respond quickly when the relay is operated. In addition, the SCM1502A can also control the relay coil to achieve high current pick-up and low current holding. The pick-up current and the holding current can be set up independently to meet the various application requirements of relays. During the low current holding stage, when the input under-voltage occurs or the controller is disabled, the controller activates the fast shutdown function to quickly disconnect the relay to reduce the influence of the SCM1502A on the disconnecting performance of the relay.
Application of Energy-saving Controller for Relay -SCM1502A
It can be widely used in DC contactors, relays, solenoid valves, and other occasions.
Typical application circuit:
Features of Energy-saving Controller for Relay -SCM1502A
● Operating temperature range 7~40V to meet the various application requirements of relays
● Real-time detection of input voltage, precise setting of relay operating voltage
● Wide working input voltage range of 2.5:1
● The pick-up current and the holding current can be set up independently, and the relay coil design is simpler
● With built-in analog frequency jitter, it is easy to solve EMI problems
● With a fast shutdown function, it reduces the shutdown delay of relay
● Taking power directly from the input side
Product Comparison of Energy-saving Controller for Relay -SCM1502A
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Main parameter |
XX main manufacturer |
MORNSUN |
Performance comparison |
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Single chip |
SCM1502A |
Prior |
Bad |
Equal |
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Pick-up current bias |
＜400mA |
<20mA |
▲ |
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Holding current bias |
＜30mA |
<10mA |
▲ |
||
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Start-up delay |
＜30ms |
<12.8ms |
▲ |
||
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Shutdown delay |
＜5ms |
<6.2ms |
● |
||
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Shutdown mode consumption |
＜65mW |
＜31mW |
▲ |
||
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Pick-up and holding consumption |
2.2W |
1.86W |
▲ |
||
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VT Enable start-up delay |
14.2ms |
13.6ms |
● |
||
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VT Enable shutdown delay |
6ms |
5.7ms |
● |
||
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Minimum operating voltage |
7.5V |
6.7V |
● |
||
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Minimum releasing voltage |
5.5V |
5.8V |
● |
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