Features: ·Automatic Feed Forward Compensation·High Gain Totem Pole Output·Internally Trimmed Bandgap Reference·Undervoltage Lockout with Hysteresis·Low Start Up Current·Optimized for offline converter·Double pulse suppression·Current mode operation to 500KHzPinoutSpecifications Characteristi...
IL3842: Features: ·Automatic Feed Forward Compensation·High Gain Totem Pole Output·Internally Trimmed Bandgap Reference·Undervoltage Lockout with Hysteresis·Low Start Up Current·Optimized for offline conver...
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Characteristic | Symbol | Value | Unit |
Total Power Supply and Zener Current | (ICC+ IZ) | 30 | mA |
Output Current | IO | ±1.0 | A |
Output Energy (Capacitive Load per Cycle) | W | 5.0 | µJ |
Error Amp Output Sink Current | IOE | 10 | mA |
Current Sense and Voltage Feedback Inputs | Vin | -0.3 to 5.5 | V |
Maximum Power Dissipation @ TA= 25: | PD | 0.862 | W |
Thermal Resistance,Junction-to-Air |
RJA |
145 | °C/W |
Operating Junction Temperature | TJ | +150 | °C |
Storage Temperature Range | Tstg | -65 ~ +150 | °C |
Fixed frequency current-mode PWM controller. It is specially designed for Off Line And DC-to-DC converter applications with minimal external component. This integrated circuit features a trimmed oscillator for precise duty cycle control. a temperature compensated reference, high gain arror amplifier, current sensing comparator, and a high current totempole output ideally suited for driving a power MOSFET.
Protection circuitry of the IL3842 includes built in under-voltage lockout and current limiting.