SPH4690

The features of SPH4690 are: (1)fold-back characteristics provides overload protection for external components; (2)burst operation under secondary short-circuit condition implemented; (3)protection against open or a short of the control loop; (4)switch-off if line voltage is too low; (5)line voltage depending compensation of foldback point.

The following is about the absolute maximum ratings of SPH4690: (1)voltage: pin 1 -0.3V min and 3V max, pin 2 -0.3V min, pin 3 -0.3V min, pin 15 -0.3V min and V16 max, pin 16 -0.3V min and 20V max, pin 17 -0.3V min; (2)current: pin 1 3mA max, pin 2 3mA max, pin 3 3mA max, pin 4 -1.5A min, pin 15 -0.5A min, 1.5A max, pin 16 0.5A max, pin 17 3mA max, pin 18 -5mA min and 3mA max; (3)junction temperature: 125; (4)storage temperature range: -40 to 125.

The electrical characteristics of the SPH4690 are: (1)start-up current: 0.6mA typ and 0.8mA max; (2)switch-on voltage: 11V min, 12V typ and 13V max; (3)switch-off voltage: 4.5V min, 5V typ and 5.5V max; (4)switch-on current: 11V typ; (5)switch-off current: 10V typ; (6)control input voltage: 390mV min, 400mV typ and 410mV max; (7)voltage gain of the control circuit in the control range: 43dB typ.