UC3844A STMicroelectronics, UC3844A Datasheet
UC3844A
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UC3844A Summary of contents
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Current Mode PWM Controller FEATURES Optimized for Off-line and Converters Low Start Up Current (<0.5mA) Trimmed Oscillator Discharge Current Automatic Feed Forward Compensation Pulse-by-Pulse Current Limiting Enhanced Load Response Characteristics Under-Voltage Lockout With Hysteresis Double Pulse Suppression ...
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ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage (Low Impedance Source 30V Supply Voltage (I mA ...
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ELECTRICAL CHARACTERISTICS (cont.) the UC184xA; - for the UC284xA Pin numbers refer to DIL-8. PARAMETER Error Amp Section Input Voltage V Input Bias Current A 2 VOL Unity Gain Bandwidth T PSRR 12 ...
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Error Amp Configuration Error Amp can Source and Sink up to 0.5mA, and Sink up to 2mA. Under-Voltage Lockout Current Sense Circuit A small RC filter may be required to suppress switch transients. Peak Current ( Determined By ...
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APPLICATIONS DATA (cont.) Output Saturation Characteristics Oscillator Section Oscillator Frequency vs Timing Resistance Open-Loop Laboratory Test Fixture High peak currents associated with capacitive loads necessi- tate careful grounding techniques. Timing and bypass capaci- tors should be connected close to pin ...
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APPLICATIONS DATA (cont.) Off-line Flyback Regulator Power Supply Specifications 1. Input Voltage 2. Line Isolation 3. Switching Frequency 4. Efficiency @ Full Load Slope Compensation UNITRODE INTEGRATED CIRCUITS 7 CONTINENTAL BLVD. MERRIMACK, NH 03054 TEL. (603) 424-2410 FAX (603)424-3460 5. ...
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Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, ...