Texas Instruments UC1843-SP
current-mode PWM controller
FEATURES
1● 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. Radiation Lot Acceptance Testing is available - contact factory for details. JG PACKAGE (TOP VIEW) COMP V FB I SENSE R /C TT 1 2 3 4 8V REF 7V CC 6 OUTPUT 5 GROUND
DESCRIPTION
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 in...