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7~40V Input, Energy-saving Controller for Relay -SCM1502A

SCM(1)en.jpg


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:

SCM1502A

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



Main parameter

XX main manufacturer

MORNSUN

Performance comparison

Single chip

SCM1502A

Prior

Bad

Equal

Pick-up current bias

400mA

<20mA



Holding current bias

30mA

<10mA



Start-up delay

30ms

<12.8ms



Shutdown delay

5ms

<6.2ms



Shutdown mode consumption

65mW

31mW



Pick-up and holding consumption

2.2W

1.86W



VT Enable start-up delay

14.2ms

13.6ms



VT Enable shutdown delay

6ms

5.7ms



Minimum operating    voltage

7.5V

6.7V



Minimum releasing    voltage

5.5V

5.8V




      

Please refer to the technical manual for specific product parameters:

Series Package VINV Pick-up current Holding current Operation voltage Quick shutdown Fsw(khz) Datasheet Sample
SCM1502A SOP-8 7~40 Adjustable Adjustable Adjustable 23.9 SCM1502A
Series
SCM1502A

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