Details, datasheet, quote on part number: 34063AP1
CategoryData Conversion => Multiplying Data Converters
DescriptionDc-to-dc Converter Control Circuits
CompanySystem Logic Semiconductor
DatasheetDownload 34063AP1 datasheet
Find where to buy


Features, Applications

The 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 FUNCTIONAL BLOCK DIAGRAM Operation from 40 V Input Low Standby Current Limiting Output Switch Current 1.5 A Output Voltage Adjustable Frequency Operation to 100 kHz Precision 2% Reference

Rating Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (Vpin 40 V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current (Note 1) Switch Current Power Dissipation and Thermal Characteristics Ceramic Package, U Suffix = +25C Thermal Resistance Plastic Package, P Suffix = +25C Thermal Resistance SOIC Package, D Suffix = +25C Thermal Resistance Operating Junction Temperature Operating Ambient Temperature Range Storage Temperature Range Symbol VCC VIR VC(switch) VE(switch) VCE(switch) IC(driver) ISW PD RJA PD RJA PD RJA

ORDERING INFORMATION Device Temperature Range Package SO-8 34063AP1 Plastic DIP

5.0 V, TA= to +70oC unless otherwise specified.) Characteristics Symbol OSCILLATOR Frequency (V Pin = 1.0 nF, = 25C) fosc Charge Current = 25C) Ichg Discharge Current = 25C) Idischg Discharge to Charge Current Ratio (Pin7 to Vcc, TA=25C) Idischg/Ichg Current Limit Sense Voltage (Ichg = Idischg, = 25C) Vlpk(sense) OUTPUT SWITCH (Note 3) Saturation Voltage, Darlington Connection (ISW 1.0 A, VCE(sat)

Saturation Voltage (ISW 1.0 A, RPin 82 to VCC. VCE(sat) Forced 20) DC Current Gain (ISW 1.0 A, VCE = 25C) hFE Collector Off-State Current = 40V) IC(off) COMPARATOR Threshold Voltage (TA = 25C) Vth

(TA = TLOW to THIGH) Threshold Voltage (TA = 25C) Threshold Voltage Line Regulation (VCC 40 V) Input Bias Current (Vin=0V)

Regime IIB TOTAL DEVICE Supply Current (VCC 40 V, nF, Vpin7 = VCC. ICC

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 3.If the output switch is driven into hard saturation (non Darlington configuration) at low switch currents 300 mA) and high driver currents (>30 mA), it may take s to come out of saturation This condition will shorten the off' time at frequencies > 30 kHz, and is magnified at high temperatures This condition does not occur with a Darlingto n configuration, since the output switch cannot saturate If a non Darlington configuration is used, the following output drive condition is recommended Forced of output switch = IC, output/(Ic, driver -7.0 mA*) > 10 *The 100 . resistor in the emitter o f the driver device requires about 7.0 mA before the output switch conducts **Possible version for shipment


Some Part number from the same manufacture System Logic Semiconductor
IL75232D Line Driver / Receiver
IZ74LV32 Quad 2-input OR GATE
SL1062A Low Voltage Transmission Circuit With Dialler Interface
SL1776 Micropower Programmable Operational Amplifier
SL20T0081 SLS System Logic Semiconductor
SL2410 Tone Ringer
SL2418 Telephone Tone Ringer With Bridge Diode
SL3010 Infrared Remote Control Transmitter Rc-5
SL311 High Performance Voltage Comparators
SL324 Low Power Quad Operational Amplifier
SL339 Quad Single Supply Comparator
SL34063A Dc-to-dc Converter Control Circuits
SL34118 Voice Switched Speakerphone Circuit
SL34119 Low Power Audio Amplifier
SL358 Low Power Dual Operational Amplifier
SL386 Low Voltage Audio Power Amp
SL393 Low Power Low Offset Voltage Dual Comparators
SL4001B Quad 2-input NOR GATE
SL4002B Dual 4-input NOR GATE
SL4011B Quad 2-input NAND Gate
0-C     D-L     M-R     S-Z