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MC74HC147N ,Decimal-to-BCD EncoderMAXIMUM RATINGS*ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ..
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MC33063AD-MC33063AVP
1.5A, Step-Up/Down/Inverting Switching Regulator
MC34063A, MC33063A,
NCV33063A
1.5 A, Step-Up/Down/
Inverting Switching
Regulators
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 oltage−Inverting applications with a minimum number of external
components. Refer to Application Notes AN920A/D and AN954/D
for additional design information. 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 Pb−Free Packages are Available
Figure 1. Representative Schematic Diagram5Drive
Collector
Ipk
Sense
VCC
Comparator
Inverting
Input
Switch
Collector
Switch
Emitter
Timing
Capacitor
(Bottom View)
This device contains 51 active transistors.
