MC34063A Series monolithic control circuit containing primary function

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

MC34063A Series monolithic control circuit containing primary function

Datasheet Thumbnail

Top Searches for this datasheet

34063
MC34063A Series monolithic control circuit containing primary functions required DC-to-DC converters. These devices consist internal temperature compensated reference, comparator, controlled duty cycle oscillator with active current limit circuit, driver high current output switch. This series specifically designed incorporated Step-Down Step-Up Voltage-Inverting applications with minimum number external components.
Operation from Input Standby Current Current Limiting Output Switch Current Output Voltage Adjustable Frequency Operation Precision Reference
Plastic Package
Connections
Internal Block Digram
Driver Collector Sense Oscillator Comparator 1.25 Reference Comparator Inverting Input Switch Emitter Timing Capacitor
Switch Collector
BEIJING ESTEK ELECTRONICS CO.,LTD
34063
Absolute Maximum Ratings
Symbol VC(switch) VE(switch) VCE(switch) VC(driver) IC(driver) Tstg Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage PIN1 Switch Collector Emitter Voltage Driver Collector Voltage Driver Collector Current (Note Switch Current Operating Junction Temperature Operating Ambient Temperature Range Storage Temperature Range Parameter Maximum -0.3 +150 +150 Units
Electrical Characteristics
(Vcc=5.0V, Ta=Tlow specified) Thigh unless otherwise
Symbol fOSC Ichg Idischg Idischg Ichg Vipk(sence) VCE(sat) VCE(sat) IC(off) 1.225 1.25 1.21 1.275 1.29 -400 0.45 Units
Characteristics OSCILLATOR Frequency (Vpin5 Charge Current(VCC 5.0V 40V, Discharge Current 5.0V 40V, Discharge Charge Current Ratio (Pin Current Limit Sense Voltage Idischg, OUTPUT SWITCH (NOTE Saturation Voltage, Darlington Connection Pins connected) Saturation Voltage, Darlington Connection Rpin Forced Current Gain (ISW Collector Off-State Current COMPARATOR Threshold Voltage (TA=25° =Tlow Thigh) Threshold Voltage Line Regulation (Vcc=3.0 Input Bias Current (Vin=0 TOTAL DEVICE Supply Current (Vcc Vpin Vth, Gnd, remaining pins open)
Regline
NOTES 1.Maximum package power dissipation limits must observed.
2.Low duty cycle pulse techniques used during test maintain junction temperature close ambient temperature possible
BEIJING ESTEK ELECTRONICS CO.,LTD
34063
Typical Performance Characteristics
Figure Output Switch On-Off Time versus Oscillator Timing Capacitor Figure Timing Capacitor Waveform
Figure Emitter Follower Configuration Output Saturation Voltage versus Emitter Current versus
Figure Common Emitter Configuration Output Switch Saturation Voltage Collector Current
Figure Current Limit Sense Voltage versus Temperature
Figure Standby Supply Current versus Supply Voltage
BEIJING ESTEK ELECTRONICS CO.,LTD
34063
Typical Applications Circuit
Figure Step-Up Converte
Note: constant
Figure External Switch. Figure External Current Boost Connections
Figure External Saturated Switch. Greater than
BEIJING ESTEK ELECTRONICS CO.,LTD
34063
Figure Step-Down Converte
Figure External Switch. Figure External Current Boost Connections
Figure External Suturated Switch. Greater than
BEIJING ESTEK ELECTRONICS CO.,LTD
34063
Figure Voltage Inverting Converte
Figure External Switch. Figure External Current Boost Connections
Figure External Saturated Switch. Greater than
BEIJING ESTEK ELECTRONICS CO.,LTD
34063
Design Formula Table
Calculation Step-Up Step-Down
Voltage-Inverting
ton/toff
(min)
(min)
-Vsat
(ton+toff)max lpk(switch) L(min)
on(max)
10-5
(max)
4.0x10-5
out(max)
10-5
0.3/lpk(switch)
-sat (max) switch
0.3/lpk(switch)
(min) (max) switch
0.3/lpk(switch)
Vin(min) switch)
Vripple
switch
ripple
Vripple
TERMS DEFINITIONS Vsat Saturation voltage output switch. Forward voltage drop output rectifier. following power supply characteristics must chosen: Vout Nominal input voltage. Vout Desired output voltage, Iout Desired output current. fmin Minimum desired output switching frequency selected values Vripple(p-p) -Desired peack-to-peack output ripple voltage. practice, calculated capacitor value will need increased equivalent series resistance board layout. ripple voltage should kept value since will directly affect line load regulation.
Ordering Information
RDERING 34063A SOP-8 /DIP-8 6A06-6A07 6A07,Changyin Office Building ,No.88,Yong Ding Road,Hai Dian District ,Beijing Postalcode:100039 Tel: 86-010-58895780 Http://www.estek.com.cn Email:sales@estek.com.cn No:01-060810
BEIJING ESTEK ELECTRONICS CO.,LTD
ARKING MC34063A
Address
010-58895793

MC34063A Series monolithic control circuit containing primary function

Top Searches for this datasheet

Other recent searches