UC2843AN ON Semiconductor, UC2843AN Datasheet
UC2843AN
Specifications of UC2843AN
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UC2843AN Summary of contents
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... High Current Totem Pole Output • Undervoltage Lockout with Hysteresis • Low Startup and Operating Current • Direct Interface with ON Semiconductor SENSEFET™ Products • Pb−Free Packages are Available © Semiconductor Components Industries, LLC, 2005 November, 2005 − Rev. 8 http://onsemi.com ...
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UC3842A, UC3843A, UC2842A, UC2843A V ref 8(14 4(7) Voltage Feedback Input 2(3) Output Compensation 1(1) MAXIMUM RATINGS Bias and Driver Voltages (Zero Series Impedance, see also Total Device spec) Total Power Supply and Zener Current Output ...
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UC3842A, UC3843A, UC2842A, UC2843A ELECTRICAL CHARACTERISTICS unless otherwise noted.) Characteristics REFERENCE SECTION Reference Output Voltage (I = 1.0 mA Line Regulation ( Load Regulation ( mA) ...
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UC3842A, UC3843A, UC2842A, UC2843A ELECTRICAL CHARACTERISTICS unless otherwise noted.) Characteristics CURRENT SENSE SECTION Current Sense Input Voltage Gain (Notes 6 & 7) Maximum Current Sense Input Threshold (Note 6) Power Supply Rejection Ratio (Note ...
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UC3842A, UC3843A, UC2842A, UC2843A 8.0 5.0 2 25° 100 k 200 OSCILLATOR FREQUENCY (Hz) OSC Figure 2. Timing Resistor ...
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UC3842A, UC3843A, UC2842A, UC2843A 100 80 Gain − 100 1 100 k f, FREQUENCY (Hz) Figure 8. Error Amp Open Loop Gain and Phase versus Frequency 0 −4.0 −8.0 −12 −16 ...
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UC3842A, UC3843A, UC2842A, UC2843A 0 Source Saturation V CC (Load to Ground) −1 25°C A −2 −55° −55°C A 2.0 1.0 Sink Saturation (Load 200 400 ...
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UC3842A, UC3843A, UC2842A, UC2843A V ref 8(14) R Internal 2. Oscillator 4( 1.0mA + Voltage Feedback − Input 2(3) Error Output Amplifier Compensation 1(1) Pin numbers in parenthesis are for the D suffix SOIC−14 ...
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UC3842A, UC3843A, UC2842A, UC2843A The UC3842A, UC3843A series are high performance, fixed frequency, current mode controllers. They are specifically designed for Off−Line and DC−to−DC converter applications offering the designer a cost effective solution with minimal external representative block diagram is ...
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UC3842A, UC3843A, UC2842A, UC2843A PIN FUNCTION DESCRIPTION Pin 8−Pin 14−Pin Function 1 1 Compensation 2 3 Voltage Feedback 3 5 Current Sense − GND 6 10 Output ...
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UC3842A, UC3843A, UC2842A, UC2843A Do not attempt to construct the converter on wire−wrap or plug−in prototype boards. High Frequency circuit layout techniques are imperative to prevent pulse width jitter. This is usually caused by excessive noise pick−up imposed on the ...
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UC3842A, UC3843A, UC2842A, UC2843A V ref 8(14 External 4(7) C Sync T 0.01 Input + − 2(3) 1(1) The diode clamp is required if the Sync amplitude is large enough to cause the bottom ...
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UC3842A, UC3843A, UC2842A, UC2843A V CC 7(12) + 5.0V − ref + − + − + 7(11) − 6(10 − 5( Comp/Latch 3(5) C The addition of the RC filter will eliminate instability caused by ...
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UC3842A, UC3843A, UC2842A, UC2843A 8(14 MPS3904 4(7) R Slope From 2( 1(1) The buffered oscillator ramp can be resistively summed with either the voltage feedback or ...
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UC3842A, UC3843A, UC2842A, UC2843A ORDERING INFORMATION Device Operating Temperature Range UC3842AN UC3842ANG UC3842AN2 UC3842AN2G UC3842AD UC3842ADG UC3842ADR2 UC3842ADR2G UC3843AN UC3843ANG UC3843AN2 UC3843AN2G UC3843AD UC3843ADG UC3843ADR2 UC3843ADR2G UC3843AD1 UC3843AD1G UC3843AD1R2 UC3843AD1R2G UC3843AD2R2 UC3843AD2R2G †For information on tape and reel specifications, including ...
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... ORDERING INFORMATION Device Operating Temperature Range UC2842AN UC2842ANG UC2842AD UC2842ADG UC2842ADR2 UC2842ADR2G UC2843AN UC2843ANG UC2843AD UC2843ADG UC2843ADR2 UC2843ADR2G UC2843AD1 UC2843AD1G UC2843AD1R2 UC2843AD1R2G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. PDIP− ...
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UC3842A, UC3843A, UC2842A, UC2843A 8 5 −B− −A− NOTE 2 C −T− N SEATING PLANE 0.13 (0.005) M −A− −B− −T− K SEATING PLANE 0.25 (0.010) ...
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... *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. SENSEFET is a trademark of Semiconductor Components Industries, LLC. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...