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MC33065P-H Scheda tecnica(PDF) 1 Page - ON Semiconductor |
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1 / 14 page MC34065-H, L MC33065-H, L SEMICONDUCTOR TECHNICAL DATA HIGH PERFORMANCE DUAL CHANNEL CURRENT MODE CONTROLLERS ORDERING INFORMATION PIN CONNECTIONS Order this document by MC34065–H/D P SUFFIX PLASTIC PACKAGE CASE 648 DW SUFFIX PLASTIC PACKAGE CASE 751G (SO–16L) 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 TA = –40° to +85°C Device Operating Temperature Range Package MC34065DW–H TA = 0° to +70°C SO–16L MC34065DW–L MC34065P–H MC34065P–L MC33065DW–H MC33065DW–L MC33065P–H MC33065P–L Plastic DIP SO–16L Plastic DIP 1 MOTOROLA ANALOG IC DEVICE DATA High Performance Dual Channel Current Mode Controllers The MC34065–H,L series are high performance, fixed frequency, dual 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 components. These integrated circuits 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. These devices are available in dual–in–line and surface mount packages. The MC34065–H has UVLO thresholds of 14 V (on) and 10 V (off), ideally suited for off–line converters. The MC34065–L is tailored for lower voltage applications having UVLO thresholds of 8.4 V (on) and 7.8 V (off). • 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 5.0V Reference VCC Undervoltage Lockout Latching PWM 1 Latching PWM 2 R R © Motorola, Inc. 1996 Rev 0 |
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