DK3113 Datasheet | Unknown Manufacturer

features l Input voltage 85V to 265V full voltage range l Built-in 700V power tube l Built -in self-powered circuit (patent), no auxiliary winding power supply required l Integrated self-starting circuit l Current mode PWM control l VCC operating voltage range 4V to 6V l 65Khz switching frequency l Automatically enters skip cycle mode when light load l Over temperature, over current, over voltage and over load protection l Standby power consumption is less than 0.3W l Frequency jitter reduces EMI filtering costs - Package and pin definition - Application areas l AC/DC power adapter l DVD/VCD power supply l Air conditioning power supply l Induction cooker power supply LED power supply Set-top box power supply Power range Input voltage (ac) 85~265V Maximum output power 15W 85~145V 15W 180~265V 18W Pin Symbol Function Description OB is the power-on start pin. There is a start-up circuit inside that is connected to the high-voltage OC pin. This pin is left floating. VCC power supply pin, externally connect a 10UF~100UF energy storage capacitor to ground. GND Ground pin. NC: Empty pin, no electrical connection inside. FB feedback control terminal pin, connect 1n F~10n F capacitor to ground, and optocoupler to ground to control output. NC: Empty pin, no electrical connection inside. 7,8 OC output pin, connected to the high-voltage power tube inside the chip, and connected to the switching transformer externally. - Limit parameters Shenzhen Dongke Semiconductor Co., Ltd. Machine Translated by Google ÓÉ Foxit PDF Editor ±à¼- °æȨËùÓÐ (c) by Foxit Software pany, 2004 ½öÓÃÓÚÆÀ¹À¡£ DK 3113 low power offline switching power supply control chip Supply voltage Vcc ………………………………………………………………………… -0.3V--8V Supply current Vcc ……………………………………………………………………………… 100m A Pin voltage……………………………………………………………………………… -0.3V--Vcc+0.3V Power tube withstand voltage……………………………………………………………………………… -0.3V--730V Power tube current………………………………………………………………………………………… 1.5A Peak...