NCV3843BV ON Semiconductor, NCV3843BV Datasheet
NCV3843BV
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NCV3843BV Summary of contents
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV High Performance Current Mode Controllers The UC3842B, UC3843B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components. These ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV MAXIMUM RATINGS Rating Bias and Driver Voltages (Zero Series Impedance, see also Total Device spec) Total Power Supply and Zener Current Output Current, Source or Sink Output Energy (Capacitive Load per Cycle) Current Sense and Voltage Feedback Inputs ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV ELECTRICAL CHARACTERISTICS T is the operating ambient temperature range that applies [Note 2], unless otherwise noted.) A Characteristics REFERENCE SECTION Reference Output Voltage (I = 1.0 mA Line Regulation ( Load Regulation ( mA) O Temperature Stability Total Output Variation over Line, Load, and Temperature ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV ELECTRICAL CHARACTERISTICS T is the operating ambient temperature range that applies [Note 6], unless otherwise noted.) A Characteristics OUTPUT SECTION Output Voltage Low State ( mA) Sink (I = 200 mA) Sink High State ( mA) Source (I = 200 mA) Source Output Voltage with UVLO Activated (V ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV 8 25° 100 k 200 OSCILLATOR FREQUENCY (kHz) OSC 1 Freq + Where: Vosc = 1.7 V Vosc ) Ct Vosc Idis*I Rt Figure 2. Timing Resistor versus Oscillator Frequency 9.0 8.5 8.0 7.5 7.0 − 55 − AMBIENT TEMPERATURE (°C) A Figure 4. Oscillator Discharge Current versus Temperature 2 ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV http://onsemi.com 6 ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV 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 Ä Ä Ä Ä 125°C A −16 Ä Ä Ä Ä − 25° ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV Ä Ä Ä Ä Ä 0 Source Saturation V Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä CC (Load to Ground) −1 25°C A Ä Ä Ä Ä − 2.0 Ä Ä Ä Ä − 55°C A Ä Ä Ä Ä ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV The UC3842B, UC3843B 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 shown in Figure 18. ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV V ref 8(14 Voltage Feedback Input 2(3) Error Amplifier Output/ Compensation 1(1) Pin numbers adjacent to terminals are for the 8−pin dual−in−line package. Pin numbers in parenthesis are for the D suffix SOIC−14 package. Capacitor C T Latch Set" ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV Undervoltage Lockout Two undervoltage lockout comparators have been incorporated to guarantee that the IC is fully functional before the output stage is enabled. The positive power supply terminal (V ) and the reference output (V CC each monitored by separate comparators. Each has built−in hysteresis to prevent erratic output behavior as their respective thresholds are crossed ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV (A) DI Control Voltage Inductor Current Oscillator Period (B) Control Voltage Oscillator Period Figure 20. Continuous Current Waveforms 8(14 5. 4( ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV 8(14) R Bias R + − Osc 4(7) + 1.0mA 2( 1.0V EA 1.0M 1(1) C 5(9) ≈ 3600C Soft−Start Figure 24. Soft−Start Circuit (12) 5.0V Ref + − D SENSEFET (11) + − G (10 (8) Comp/Latch ( 1/4 W Control Circuitry Ground: To Pin (9) Virtually lossless current sensing can be achieved with the implementation of a SENSEFET power switch. For proper operation during over− ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV 7(12) 5.0V Ref + − Comp/Latch Series gate resistor R will damp any high frequency parasitic oscillations g caused by the MOSFET input capacitance and any series wiring inductance in the gate−source circuit. Figure 28. MOSFET Parasitic Oscillations V CC 7(12) Isolation Boundary 5.0V Ref + − ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV From Error Amp compensation circuit for stabilizing any current mode topology except for boost and flyback converters operating with continuous inductor current. From Error Amp compensation circuit for stabilizing current mode boost and flyback topologies operating with continuous inductor current ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV W 4.7 MDA 202 115 Vac 0.01 8(14) R Bias 10k R Osc 4(7) 4700pF + 18k 2(3) EA 100 150k pF 4.7k 1(1) Figure 34 Off−Line Flyback Regulator Test Conditions Line Regulation: 5 130 Vac in ±12 V Load Regulation: 5 115 Vac 1 4.0 A out ± 115 Vac, ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV ORDERING INFORMATION Device UC2842BD UC2842BDG UC2842BD1 UC2842BD1G UC2842BD1R2 UC2842BD1R2G UC2842BN UC2842BNG UC3842BN UC3842BNG UC3842BD UC3842BDG UC3842BDR2 UC3842BDR2G UC3842BD1 UC3842BD1G UC3842BD1R2 UC3842BD1R2G UC3842BVDR2 UC3842BVDR2G UC3842BVD1 UC3842BVD1G UC3842BVD1R2 UC3842BVD1R2G UC2843BD UC2843BDG UC2843BDR2 UC2843BDR2G UC2843BD1 UC2843BD1G UC2843BD1R2 UC2843BD1R2G UC2843BN UC2843BNG † ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV ORDERING INFORMATION Device Operating Temperature Range UC3843BD UC3843BDG UC3843BDR2 UC3843BDR2G UC3843BD1 UC3843BD1G UC3843BD1R2 UC3843BD1R2G UC3843BDR2 UC3843BDR2G UC3843BN UC3843BNG UC3843BVD UC3843BVDG UC3843BVDR2 UC3843BVDR2G UC3843BVD1 UC3843BVD1G UC3843BVD1R2 UC3843BVD1R2G UC3843BVN UC3843BVNG NCV3843BVDR2 NCV3843BVDR2G †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 ...
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... ALYW ALYWV Assembly Location WL Wafer Lot YY Year WW Work Week Pb−Free Package *This marking diagram also applies to NCV3843BV. http://onsemi.com 19 8 UC284xBN AWL AWL YYWWG UC284xBDG AWLYWW 1 8 284xB ALYW G ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV 8 5 −B− −A− NOTE 2 C −T− N SEATING PLANE 0.13 (0.005) M −A− −B− −T− SEATING 14 PL PLANE 0.25 (0.010 PACKAGE DIMENSIONS PDIP−8 N SUFFIX CASE 626−05 ...
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... UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV −X− 0.25 (0.010 −Y− −Z− 0.25 (0.010 *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. ...