MC34065P ON Semiconductor, MC34065P Datasheet
MC34065P
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MC34065P Summary of contents
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... Latching PWM 1 Current Sense 1 6 Drive Output 2 10 Latching PWM 2 Current MC34065DW Sense 2 11 MC34065P Drive Gnd 9 MC33065DW MC33065P Motorola, Inc. 1996 Order this document by MC34065/D MC34065 MC33065 HIGH PERFORMANCE DUAL CHANNEL CURRENT MODE CONTROLLER SEMICONDUCTOR TECHNICAL DATA P SUFFIX PLASTIC PACKAGE ...
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MAXIMUM RATINGS Rating Total Power Supply and Zener Current Output Current, Source or Sink (Note 1) Output Energy (Capacitive Load per Cycle) Current Sense, Enable, and Voltage Feedback Inputs Sync Input High State (Voltage) Low State (Reverse Current) Error Amp ...
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ELECTRICAL CHARACTERISTICS (continued [Note 2 8 3.3 nF, for typical values for min/max values the operating ambient temperature range ...
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Pin Function 1 Sync Input A narrow rectangular waveform applied to this input will synchronize the oscillator voltage within the range of 2 5.5 V will inhibit the oscillator Timing capacitor C T ...
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Figure 3. Error Amp Small–Signal Transient Response 2.55 V 2.50 V 2.45 V 1.0 s/DIV Figure 5. Error Amp Open Loop Gain and Phase versus Frequency 100 1 2.5 V ...
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Figure 9. Reference Load Regulation 1 1.0 ms/DIV Figure 11. Output Saturation Voltage versus Load Current 0 Source Saturation V CC (Load to ...
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The MC34065 series are high performance, fixed frequency, dual channel current mode controllers specifically designed for Off–Line and dc–to–dc converter applications. These devices offer the designer a cost effective solution with minimal external components where independent regulation of two power ...
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Figure 15. Representative Block Diagram V ref 15 R 2.5 V Internal Bias Sync Input 3 Oscillator 1 Voltage – Feedback 1 Error 0.5 V Amp 1 ...
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Undervoltage Lockout Two Undervoltage Lockout comparators have been incorporated to guarantee that the IC is fully functional before the output stages are enabled. The positive power supply terminal ( and the reference output (V ref ) are each ...
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Figure 17. External Clock Synchronization 220 pF 1 External Sync Input 3 Osc – EA1 5 The external diode clamp is required if the negative Sync current is greater than ...
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Figure 21. Adjustable Reduction of Clamp Level with Soft–Start V ref 5.0 V ref 15 R Bias Osc 2 V Clamp + 4 – – EA1 R 0 ...
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Figure 25. Bipolar Transistor Drive Base Charge – Removal The totem–pole outputs can furnish negative base current for enhanced transistor turn–off, with the addition of capacitor C1. Figure 27. Dual Charge ...
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Cold <1 Hot 138 Vac 0.05 3 Bias 4.7 Osc – EA1 100 0 16.2 ...
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Figure 29. 125 Watt Off–Line Converter AC Input AC Line Input T 0.22 F 250 V T1 0.05 F 250 V 4N35 4 4700 5.4 k 16.2 k 1.0 M 100 14 MC34065 MC33065 5 11/16 Circuit ...
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0.25 (0.010) –A– –B– 16X 0.010 (0.25 14X K Motorola reserves the right to make changes without ...