UC3846N Fairchild Semiconductor, UC3846N Datasheet
UC3846N
Specifications of UC3846N
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UC3846N Summary of contents
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... Under-Voltage Lockout • Soft-Start Capability • Shutdown Terminal • 500KHz Operation Internal Block Diagram ©2000 Fairchild Semiconductor International Description The UC3846 control IC provides all of the necessary fea- tures to implement fixed frequency, current mode control schemes while maintaining a minimum external parts count. ...
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UC3846 Absolute Maximum Ratings Parameter Supply Voltage Collector Supply Voltage Output Current, Sink of Source (Peak) Reference Output Current Soft Start Sink Current Sync Output Current Error Amplifier Output Current Oscillator Changing Current Power Dissipation ( ...
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Electrical Characteristics (V = 15V +70 C, unless otherwise specified Parameter OSCILLATOR SECTION (Note 2) Initial Accuracy Frequency Change with Voltage Frequency Change with Temperature (Note 6) Sync Output High Level Sync Output Low Level ...
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UC3846 Electrical Characteristics (V =15V unless otherwise specified Parameter CURRENT LIMIT ADJUST SECTION Current Limit Offset Voltage (Note 1) Input Bias Current SHUTDOWN TERMINAL SECTION Threshold Voltage Input Voltage Range Minimum ...
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Output deadtime is determined by the external capacitor, C For large values (us) = l45C T d 2.2 by the formula: f KHz = ----------------------------------------- - OUTPUT DEADTIME(T Figure 1. UC3846 ...
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UC3846 A small PC filter may be required in some applications to reduce switch transients Differential input allows remote, noise free sensing. 6 Figure 3. Parallel Operation Figure 4. Pulse By Pulse Current Limiting Figure 5. Current Sense Amp Connections ...
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Mechanical Dimensions Package 6.40 0.20 0.252 0.008 #1 #8 7.62 0.300 16-DIP #16 #9 3.25 0.20 0.128 0.008 5.08 MAX 0.200 0.38 MIN 0.014 3.30 0.30 0.130 0.012 UC3846 7 ...
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... UC3846 Ordering Information Product Number Package UC3846N 16 DIP 8 Operating Temperature ...
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UC3846 9 ...
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... UC3846 LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR INTERNATIONAL. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, ...