UC3842B High Performance Current Mode PWM Controller IC DIP-8 Package

The UC3842 is available in an 8-Pin mini-DIP the necessary features to implement off-line, fixed-frequency current-mode control schemes with minimal external parts count. This technique results in improved line regulation, enhanced load response characteristics, and a simpler, easier to design control loop. Topological advantages include inherent pulse-by-pulse current limiting. Protection circuitry includes built-in under-voltage lock-out and current limiting. Other features include fully-latched operation, a 1% trimmed bandgap reference, and a start-up current less than 1mA. These devices feature a totem-pole output designed to source and sink high peak current from a capacitive load, such as the gate of a power MOSFET. Consistent with N-channel power devices, the output is low in the OFF-state.

Features:-

• Low Start-Up And Operating Current
• Under voltage Lockout With Hysteresis
• Internally Trimmed Reference With Under voltage Lockout
• Current Limiting
• Trimmed Oscillator For Precise Frequency Control
• Current Mode Operation To 500khz
• Oscillator Frequency Guaranteed At 250khz
• Latching PWM For Cycle-By-Cycle
• High Current Totem Pole Output
• Automatic Feed Forward Compensation

Specifications:-

• Manufacturer Part No: UC2842BN
• Series: UC2842B
• Operating Supply Voltage: 30V
• Output Voltage: 4.95V to 5.05V
• Output Current: 1A
• Topology: Boost, Flyback, Forward
• Number of Outputs: 1 Output
• Switching Frequency: 500kHz
• Duty Cycle Max: 100%
• Operating Temperature Range: -40°C ~ +150°C
• Fall Time: 50ns
• Rise Time: 50 ns
• Mounting Style: Through Hole
• Package/Case: DIP-8

Applications:-

• SMPS (Switch Mode Power Supplies) circuits
• DC-DC converter circuits
• Electronics power supply
• Battery drain circuit
• Load machines

Package Includes:-

1 x UC3842B High Performance Current Mode PWM Controller IC DIP-8 Package