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ET-34063A Dataheets PDF



Part Number ET-34063A
Manufacturers ETC
Logo ETC
Description DC to DC Converter Controller
Datasheet ET-34063A DatasheetET-34063A Datasheet (PDF)

ET-34063A DC to DC Converter Control Circuits DESCRIPTION The MC34063A Series is a monolithic control circuit containing the primary functions required for DC-to-DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step-Down and Step-Up and Voltage-Inverting applications with a minim.

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ET-34063A DC to DC Converter Control Circuits DESCRIPTION The MC34063A Series is a monolithic control circuit containing the primary functions required for DC-to-DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step-Down and Step-Up and Voltage-Inverting applications with a minimum number of external components. FEATURES Operation from 3.0 V to 40 V Input Low Standby Current Current Limiting Output Switch Current to 1.5 A Output Voltage Adjustable Frequency Operation to 100 kHz Precision 2% Reference ABSOLUTE MAXIMUM RATINGS Rating Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (VPIN 1=40V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collect Current (Note 1) Switch Current Operating Junction Temperature Operating Ambient Temperature Range Storage Temperature Range Symbol VCC VIR VC(switch) VE(switch) VCE(switch) VC(driver) IC(driver) ISW TJ TA Tstg Value 40 -0.3 to +40 40 40 40 40 100 1.5 +150 0 to +70 -65 to +150 Unit Vdc Vdc Vdc Vdc Vdc Vdc mA A ET- 34063A ELECTRICAL CHARACTERISTICS (Vcc=5.0 V, Ta=Tlow to Thigh, unless otherwise specified.) Characteristics Symbol Min OSCILLATOR Frequency fOSC 24 (Vpin5=0V, CT=1.0nF, TA=25 ) Charge Current (VCC=5.0V to 40V, TA=25 ) lchg 24 Discharge Current (VCC=5.0V to 40V, TA=25 ) ldischg 140 Discharge to Charge Current Ratio (Pin 7 to VCC, TA=25 ) ldischg/lchg 5.2 Current Limit Sense Voltage (lcha=ldischa; TA=25 ) Vipk(sence) 250 OUTPUT SWITCH (NOTE 2) Saturation Voltage, Darlington Connection (lSW=1.0A, Pins 1, 8 connected) Saturation Voltage, Darlington Connection (lSW=1.0A, Rpin8=82 to VCC, Forced 20) VCE(sat) VCE(sat) ----- DC Current Gain (lSW=1.0A, VCE=5.0V, TA=25 ) hFE 50 Collector Off-State Current (VCE=40V) lC(off) --- COMPARATOR Threshold Voltage (TA=25 ) (TA=Tlow to Thigh) Vth 1.225 1.21 Threshold Voltage Line Regulation (Vcc=3.0V to 40V) Input Bias Current (Vin=0V) Regline lIB ----- TOTAL DEVICE Supply Current ( VCC=5.0V to 40V, CT=1.0nF, Pin 7= VCC , Vpin5>Vth, Pin2=Gnd, remaining pins open) lCC --- Type 33 35 220 6.5 300 1.0 0.45 75 40 1.25 --1.4 -20 --- Max 42 42 260 7.5 350 1.3 0.7 --100 1.275 1.29 5.0 -400 4.0 NOTES: 1. Maximum package power dissipation limits must be observed. 2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible. Unit kHz A A --mV V V --A V mV nA mA Ordering Info Package DIP-8 SOP-8 ET34063 Package Package: D: DIP-8 E: SOP-8 Packing type TB Type ET34063D ET34063E Packing type TB TB .


A1318 ET-34063A MC34063AB


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