UC1843-SP - Texas Instruments

UC1843-SP current-mode PWM controller

The UC1843 family of control devices provides the necessary features to implement off-line or dc-to-dc fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 1 mA, a precision reference trimmed for accuracy at the error amp input, log.

Features

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• QML-V Qualified, SMD 5962-86704
• Rad-Tolerant: 50 kRad (Si) TID (ELDRS Free) (1)
• Controlled Baseline
• Optimized For Off-line and DC-to-DC Converters
• Low Start-Up Current (<1 mA)
• Automatic Feed Forward Compensation
• Pulse-by-Pulse Current Limiting
• Enhanced Load Response Characteristics
• Under-Voltage Lockout With Hysteresis
• Double Pulse Suppression
• High Current Totem Pole Output
• Internally Trimmed Bandgap Reference
• 500-kHz Operation
• Low RO Error Amp xxx (1) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad/sec. Radi.