UC3842A 3842 ON REG CTRLR BST FLYBK PWM Controller SOP-8

Product details of UC3842A 3842 ON REG CTRLR BST FLYBK PWM Controller SOP-8
The UC3842/UC3843/UC3844/UC3845 are fixed frequencycurrent-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator and a high current totempole output for driving a Power MOSFET. The UC3842 and UC3844 have UVLO thresholds of 16V (on) and 10V (off). The UC3843 and UC3845 are 8.5V(on) and 7.9V (off). The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844 and UC3845 can operate with 50% duty cycle.

Specification of UC3842A 3842 ON REG CTRLR BST FLYBK PWM Controller SOP-8
Supply Voltage: 30V
Output Current: ±1A;
Output Sink Current: 10mA
Trimmed Oscillator for Precise Frequency Control.
Oscillator Frequency Guaranteed at 250 kHz.
Current Mode Operation to 500 kHz.
Automatic Feed Forward Compensation.
Latching PWM for Cycle−By−Cycle Current Limiting.
Internally Trimmed Reference with Under voltage Lockout.
High Current Totem Pole Output.
Under voltage Lockout with Hysteresis.
Low Startup and Operating Current.
This is a Pb−Free and Halide−Free Device.