UC3843 SMD IC Current Mode PWM Controller IC In Pakistan

The UC3843 SMD IC is a current Mode PWM Controller, meaning it can be used to provide a constant current by varying the output voltage to the load. While building Switch mode supplies with feedback there are two modes of control that are commonly used, one is voltage mode control where the output voltage will keep constant irrespective of the current (CV mode) and the other is current mode control where the output current will be constant (C mode) irrespective of the voltage. The UC3843 can be used to regulate or limit current in applications like SMPS, RPS, DC-DC Converters, Line voltage regulators, etc.

Specification of UC3843 SMD IC Current Mode PWM Controller IC SOP-8 Package:

• Part Number: UC3843
• Topology: Boost, Buck, Buck-Boost, Flyback, Forward
• Control method: Peak Current Mode
• VCC (Min) (V):8.4
• VCC (Max)(V):28
• Frequency (Max) (kHz):500
• UVLO thresholds on/off (V):8.4/7.6
• Duty cycle (Max) (%):100
• Gate drive (Typ) (A):1
• Operating temperature range:0 to 70
• Package Group: SOP-8

Feature of UC3843 Current Mode PWM Controller IC:

1. Optimized for Off-line and DC-to-DC Converters
2. Low Start-Up Current (< 1 mA)
3. Automatic Feedforward Compensation
4. Pulse-by-Pulse Current Limiting
5. Enhanced Load-Response Characteristics
6. Undervoltage Lockout With Hysteresis
7. Double-Pulse Suppression
8. High-Current Totem-Pole Output
9. Internally Trimmed Bandgap Reference
10. Up to 500-kHz Operation
11. Error Amplifier With Low Output Resistance

Related Document:-

• PDF UC3843 SMD IC Current Mode PWM Controller IC 

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• UC3843 SMD IC Current Mode PWM Controller IC In Pakistan