SG6846LD

The SG6846LD is designed as a highly-integrated green-mode PWM controller which provides several features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary green-mode function provides off-time modulation to continuously decrease the switching frequency under light-load conditions.

SG6846LD has eleven features. (1)Two-level OCP with 96mS delay time. (2)Peak-current-mode operation with cycle-by-cycle current limiting. (3)PWM frequency continuously decreasing w/ burst mode at light loads. (4)Low start-up current (8uA). (5)Low operating current (3.7mA). (6)Vdd over-voltage protection (OVP). (7)AC input brownout protection with hysteresis. (8)Programmable over-temperature protection (OTP). (9)Constant power limit over universal AC input range. (10)Internal latch circuit for OTP, OVP, OCP. (11)Very few external components. Those are all the main features of SG6846LD .

Some absolute maximum ratings of SG6846LD have been concluded into several points as follow. (1)Its supply voltage would be 25V. (2)Its input voltage to Vin, FB, SENSE, RT, RL pin would be from -0.3V to 7V. (3)Its power dissipation would be 800mW for DIP and 400mW for SOP. (4)Its thermal resistance junction to case would be 67.1°C/W and would be 41.2°C/W for SOP. (5)Its operating ambient temperature range would be from -40°C to 125°C. (6)Its storage temperature range would be from -65°C to 150°C. (7)Its lead temperature soldering would be 260°C for DIP 10 seconds and would be 230°C for SOP 10 seconds. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics of SG6846LD are concluded as follow. (1)Its continuously operating voltage would be max 20V. (2)Its on threshold voltage would be min 15.5V and typ 16.5V and max 17.5V. (3)Its off threshold voltage would be min 9.5V and typ 10.5V and max 11.5V. And so on. If you have any question or suggestion or want to know more information of SG6846LD please contact us for details. Thank you!