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MC33065P Folha de dados(PDF) 1 Page - ON Semiconductor |
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1 / 15 page ORDERING INFORMATION TA = –40° to +85°C Device Operating Temperature Range Package TA = 0° to +70°C MC34065DW MC34065P MC33065DW MC33065P SO–16L SO–16L PIN CONNECTIONS Sync Input CT RT Voltage Feedback 1 Compensation 1 Current Sense 1 Drive Output 1 Gnd VCC Vref Drive Output 2 Enable Voltage Feedback 2 Compensation 2 Current Sense 2 Drive Output 2 Drive Gnd 1 (Top View) 2 3 4 5 6 7 89 11 10 12 13 14 15 16 MC34065 MC33065 SEMICONDUCTOR TECHNICAL DATA HIGH PERFORMANCE DUAL CHANNEL CURRENT MODE CONTROLLER Order this document by MC34065/D P SUFFIX PLASTIC PACKAGE CASE 648 DW SUFFIX PLASTIC PACKAGE CASE 751G (SO–16L) Plastic DIP Plastic DIP 16 1 16 1 1 MOTOROLA ANALOG IC DEVICE DATA High Performance Dual Channel Current Mode Controller The MC34065 is a high performance, fixed frequency, dual current mode controllers. It is specifically designed for off–line and dc–to–dc converter applications offering the designer a cost effective solution with minimal external components. This integrated circuit feature a unique oscillator for precise duty cycle limit and frequency control, a temperature compensated reference, two high gain error amplifiers, two current sensing comparators, Drive Output 2 Enable pin, and two high current totem pole outputs ideally suited for driving power MOSFETs. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle–by–cycle current limiting, and a latch for single pulse metering of each output. The MC34065 and MC33065 are available in dual–in–line and surface mount packages. • Unique Oscillator for Precise Duty Cycle Limit and Frequency Control • Current Mode Operation to 500 kHz • Automatic Feed Forward Compensation • Separate Latching PWMs for Cycle–By–Cycle Current Limiting • Internally Trimmed Reference with Undervoltage Lockout • Drive Output 2 Enable Pin • Two High Current Totem Pole Outputs • Input Undervoltage Lockout with Hysteresis • Low Startup and Operating Current Representative Block Diagram + – + – Vref Sync Input RT CT Voltage Feedback 1 Compensation 1 Drive Output 2 Enable Voltage Feedback 2 Compensation 2 15 1 5 13 12 14 4 2 3 7 6 10 11 Drive Output 1 Current Sense 1 Drive Output 2 Current Sense 2 VCC 16 Gnd 8 Drive Gnd 9 Error Amp 2 Error Amp 1 Oscillator Vref Undervoltage Lockout 5.0 V Reference VCC Undervoltage Lockout Latching PWM 1 R R This device contains 208 active transistors. Latching PWM 2 © Motorola, Inc. 1996 Rev 1 |
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