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UC3843 Series Control Integrated Circuits
Features:
- Optimized for: Off-Line and DC-to-DC Converters
- Low Start-Up Current: < 1 mA
- Automatic Feedforward Compensation
- Pulse-by-Pulse Current Limiting
Specification:
- Part number: UC3843
- Topology: Boost, Buck, Buck-Boost, Flyback, Forward
- Control method: Peak Current Mode
- VCC (Min): 8.4 V
- VCC (Max): 28 V
- Frequency (Max): 500 kHz
- UVLO thresholds on/off: 8.4/7.6 V
- Duty cycle (Max): 100%
- Gate drive (Typ): 1 A
- Features: Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Multi-topology
- Operating temperature range: 0 to 70°C
- Package Group: PDIP|8
- Package size (mm2:W x L): 93 mm2: 9.43 x 9.81 (PDIP|8)
The UC3843 series of control integrated circuits provide the features required for off-line or DC-to-DC fixed-frequency current-mode control applications. Featuring an undervoltage lockout (UVLO) with low start-up current and a precision reference, these ICs offer a variety of options for different applications. The UC3843 is specified for operation from 0°C to 70°C.
Devices with higher turnon or turnoff hysteresis are suitable for off-line power supplies, while those with narrower hysteresis ranges are ideal for DC-DC applications.
For more details or bulk pricing, contact our sales team directly at sales02@thansiv.com or dial +91-8095406416.
*Images are for illustration only; actual product may vary.