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UC3843 -Current Mode PWM Controller
- Product Code: ICO_UC3843D
- Availability: In Stock
-
₹21.00 (+ GST)
- 10 or more quantity/sets : ₹19.00
- 25 or more quantity/sets : ₹18.00
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UC3843 Current Mode PWM Controller IC
The UC3843 is a current-mode PWM controller IC. It is configured for Off-Line and DC-to-DC converter applications. This integrated circuit incorporates a trimmed oscillator for duty cycle control. It includes a temperature-compensated reference and a high-gain error amplifier. A current sensing comparator provides stable operation. Its high-current totempole output drives Power MOSFETs. The controller integrates features to reduce external component count. It includes low start-up current and UVLO with hysteresis. Operating frequencies are supported up to 500kHz. The UC3843 offers a solution for power management.
Specifications:
- Controller Type: Current-Mode PWM
- Operating Frequency: Up to 500 kHz
- Start-Up Current: Low
- Duty Cycle Control: Trimmed Oscillator, Precise
- Output Drive: High Current Totempole
- Protection Features: UVLO with Hysteresis, Maximum Duty Clamp
- Internal Reference: Temperature Compensated
- Error Amplifier: High Gain
Key features and benefits:
- Fixed frequency current-mode PWM control
- Configured for Off-Line and DC-to-DC converters
- Duty cycle control via trimmed oscillator
- Low start-up current
- Under-Voltage Lockout (UVLO) with hysteresis
- High current totempole output for Power MOSFETs
- Integrated current sensing comparator
Applications:
- Switch-Mode Power Supplies (SMPS)
- DC-DC Converters
- Offline Power Converters
- Battery Chargers
- LED Lighting Power Supplies
Frequently Asked Questions:
Q: What package type is the UC3843 IC supplied in?
A: The UC3843 IC is supplied in a DIP package.
Q: Is the UC3843 suitable for both offline and DC-DC converter designs?
A: Yes, the UC3843 is configured for both Off-Line and DC-to-DC converter applications.
Q: What is the maximum operating frequency of this PWM controller?
A: The UC3843 supports operating frequencies up to 500 kHz.
Q: Does this controller include under-voltage lockout protection?
A: Yes, the UC3843 includes UVLO (Under-Voltage Lockout) with hysteresis.
Q: Can this IC directly drive power MOSFETs?
A: Yes, its high-current totempole output is designed for driving Power MOSFETs.
Package Includes:
1x UC3843 Current Mode PWM Controller IC (DIP Package).*Image shown is a representation only.
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