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TC170CPE Fiches technique(PDF) 3 Page - TelCom Semiconductor, Inc |
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TC170CPE Fiches technique(HTML) 3 Page - TelCom Semiconductor, Inc |
3 / 8 page 4-121 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 ELECTRICAL CHARACTERISTICS (Cont.): VIN = 16V, RO = 24kΩ, CO = 1nF, TA = 25°C, unless otherwise indicated. Symbol Parameter Test Conditions Min Typ Max Unit Output Stage (Cont.) VOH Output High Level ISOURCE = 20mA VDD – 1V V VOL Output High Level ISOURCE = 100mA VDD – 4V V tR Output Rise Time CL = 1000pF 50 150 nsec tF Output Fall Time CL = 1000pF 50 150 nsec Undervoltage Lockout Start-Up Threshold 7.15 7.7 8.25 V Threshold Hysteresis 0.5 0.75 1 V Supply IS Standby Supply Current 2.7 3.8 mA Pin No. (16-Pin PDIP) Symbol Description 1 SOFT START/ILIM Soft Start Adjust / Current Limit. For setting the peak current threshold of sense inputs (pins 3 and 4). Second function of this pin is Soft-Start Adjust. 2VREF OUT Reference supply output of 5.1 volts. It can supply a minimum of 10mA. 3– ISENSE IN – Current Sense Input. Inverting input for sensing peak current of the pass transistor through series sense current monitor resistor. 4+ ISENSE IN + Current Sense Input. Non-inverting input used in conjunction with pin 3. This senses the positive end of current monitor resistor. 5 + ERROR AMP IN + Error Amp In. Non-inverting input for output voltage regulation. 6 – ERROR AMP IN – Error Amp In. Inverting input of the amplifier for the reference voltage. 7 CMPTR For compensation of the feedback loop response. 8CO Timing capacitor (CO) input to set oscillator frequency in conjunction with pin 9, RO, resistor input. Second function is for setting crossover dead time of pin 11and 14 outputs. 9RO Timing resistor (RO) input to set oscillator frequency by setting constant current charge rate to charge capacitor CO. 10 SYNC For PWM controller oscillator synchronization of two or more controllers. or as a clock input to sync oscillator from external signal. 11 OUTPUT A A output drive of phase A from push pull transistors. 12 GND Ground return for all input and output pins. 13 VDD Supplies power to operate the output drivers only. 14 OUTPUT B Output of phase B from push pull transistors. 15 VIN Voltage bias supply for all TC170 circuits except the output transistors. 16 SHUTDOWN Input pin to disable both output drives to 0V OFF. PIN CONFIGURATIONS (DIP and SOIC) TC170 CPE SHDN VDD SOFT START/ ILIM OUTPUT B VREF – I SENSE IN + I SENSE IN + ERROR AMP IN CMPTR GND OUTPUT A SYNC RO OUT – ERROR AMP IN NOTE: Outputs LOW in "OFF" state. VIN CO 1 2 3 4 16 15 14 13 5 6 7 12 11 10 9 8 ACOM 1 2 3 4 15 16 14 13 5 6 7 12 11 10 9 8 TC170COE BUF – VSS CINT + – VREF CREF CREF CAZ CMPTR OUT A DIGITAL GND B VDD + + VIN VIN VREF – CMOS CURRENT MODE PWM CONTROLLER TC170 PIN DESCRIPTION |
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Description similaire - TC170CPE |
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