SD4841 Datasheet PDF – Current Mode PWM Controller

Part Number : SD4841, SD4840 Thru SD4844

Function : CURRENT MODE PWM CONTROLLER WITH BUILT-IN HIGH VOLTAGE MOSFET

Package : DIP 8 Pin

Manufacturers : Silan Microelectronics

Image :

SD4841 datasheet

 

Description :

SD4840/4841/4842/4843/4844 is a current mode PWM controller with low standby power and low start current for power switch. In standby mode, the circuit enters burst mode to reduce the standby power dissipation. The switch frequency is 67KHz with ±2.5 KHz jitter frequency for low EMI. The stress on transformer during power on is reduced by the builtin 15ms soft start circuit to avoid the saturation of transformer.

Pinout

1. SGND : GND of control circuit
2. PGND : GND of MOSFET
3. VCC : Power supply
4. FB : Feedback input
5. NC : No connection
6. Drain : Drain end of MOSFET
7. Drain : Drain end of MOSFET
8. Drain : Drain end of MOSFET

Features

1. Lower start-up current (Typ.6μA)
2. Frequency jitter for low EMI
3. Overcurrent protection
4. Overvoltage protection
5. Undervoltage lockout
6. Built-in temperature protection
7. Built-in high voltage MOSFET

Applications

1. Switch power

 

Other data sheets within the file : SD4840, SD4840P67K65, SD4841, SD4841P67K65, SD4842

SD4841 Datasheet PDF Download

SD4841 pdf