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| ( DataSheet : www..com ) UTC MC34063 LINEAR INTEGRATED CIRCUIT DC TO DC CONVERTER CONTROLLER DESCRIPTION The UTC MC34063 is a monolithic regulator subsystem, intended for use as DC to DC converter. This device contains a temperature compensated band gap reference, a duty-cycle control oscillator, driver and high current output switch. It can be used for step down, step-up or inverting switching regulators as well as for series pass regulators. SOP-8 FEATURES *Operation from 3.0V to 40V. *Short circuit current limiting. *Low standby current. *Output switch current of 1.5A without external transistors. *Frequency of operation from 100Hz to 100kHz. *Step-up, step-down or inverting switch regulators. DIP-8 PIN CONFIGURATION Switch Collector Switch Emitter Timing Capacitor 1 8 Driver Collector 2 7 Lpk Sense 3 6 Vcc Gnd 4 5 Comparator Inverting input BLOCK DIAGRAM E SWITCH COLLECTOR T2 S R T1 SWITCH EMITTER D C Is A TIMING CAPACITOR CT OSCILLATOR 1 Q 8 DRIVE COLLECTOR 2 7 Ipeak SENSE 3 6 Vcc COMP. GND 4 1.25Vref B 5 COMPARATOR INVERTING INPUT UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R103-001,B www..com www..com UTC MC34063 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS(Ta=25C ) PARAMETER Supply Voltage Comparator input voltage range Switch collector voltage Switch Emitter Voltage Switch collector to emitter voltage Driver collector Voltage Switch current Power Dissipation (Ta=25C) DIP SOP Thermal Characteristics DIP SOP Operating junction temperature Operating ambient temperature range Storage temperature range SYMBOL Vcc Vi(comp) Vc(sw) Ve(sw) Vce(sw) Vc(dr) Isw Pd VALUE 40 -0.3~+40 40 40 40 40 1.5 1250 625 100 160 150 0~70 -65~150 UNIT V V V V V V A mW mW C/W C/W C C C Tj Ta Tstg ELECTRICAL CHARACTERISTICS (Ta=25C ) (Vcc=5.0V,Ta=0~70C, unless otherwise specified) PARAMETER SYMBOL Ichg Idischg Vosc K Vsense TEST CONDITIONS Vcc=5 to 40V,Ta=25C Vcc=5 to 40V,Ta=25C Ta=25C V7=Vcc,Ta=25C Ichg=Idischg Ta=25C Isw=1.0A Vc(driver)=Vc(sw) Isw=1.0A Vc(driver)=50mA Isw=1.0A Vce=5.0V,Ta=25C Vce=40.0V,Ta=25C MIN 22 140 5.2 250 TYP. 31 190 0.5 6.1 300 MAX 42 260 7.5 350 UNIT A A V mV Oscillator Charging Current Discharging Current Oscillator Amplitude Discharge to Charge Current Ratio Current limit Sense Voltage Output Switch Saturation Voltage 1(note) Saturation Voltage 2(note) DC Current Gain (note) Collector Off State Current (note) Vce(sat)1 Vce(sat)2 Gi(DC) C(off) Vth Vth Ibias 0.95 0.45 50 180 0.01 1.21 Vcc=3~40V Vi=0V Vcc=5~40V Ct=0.001 V7=Vcc Vc>Vth Pin2=GND 1.24 2.0 50 100 1.29 5.0 400 A V mV nA 1.3 0.7 V V Comparator Threshold Voltage Threshold Voltage Line Regulation Input Bias Current Total Device Supply Current Icc 2.7 4.0 mA NOTE: Output switch tests are performed under pulsed conditions to minimize power dissipation. UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R103-001,B UTC MC34063 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R103-001,B UTC MC34063 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R103-001,B UTC MC34063 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R103-001,B UTC MC34063 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R103-001,B UTC MC34063 LINEAR INTEGRATED CIRCUIT UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UTC UNISONIC TECHNOLOGIES CO., LTD. 7 QW-R103-001,B |
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