SD4844 controller equivalent, pwm controller.
* Lower start-up current (Typ.6μA) * Frequency jitter for low EMI * Overcurrent protection * Overvoltage protection * Undervoltage lockout * Built-in temperature protecti.
* Switch power
* Built-in soft start * Burst mode operation * Cycle by cycle current limit
ORDERING INFORMATION
Part N.
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.
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