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 70C
• 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 0C to 70C.

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 [email protected] or dial +91-8095406416.

*Images are for illustration only; actual product may vary.