High Speed SingleâEnded PWM Controller
The MC34023 series are high speed, fixed frequency, singleâended pulse width modulator controllers optimized for high frequency operation. They are specifically designed for OffâLine and
DCâtoâDC converter applications offering the designer a costâeffective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated
reference, a wide bandwidth error amplifier, a high speed current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
Features
⢠50 ns Propagation Delay to Output
⢠High Current Totem Pole Output
⢠Wide Bandwidth Error Amplifier
⢠FullyâLatched Logic with Double Pulse Suppression
⢠Latching PWM for CycleâByâCycle Current Limiting
⢠SoftâStart Control with Latched Overcurrent Reset
⢠Input Undervoltage Lockout with Hysteresis
⢠Low Startup Current (500 μA Typ)
⢠Internally Trimmed Reference with Undervoltage Lockout
⢠90% Maximum Duty Cycle (Externally Adjustable)
⢠Precision Trimmed Oscillator
⢠Voltage or Current Mode Operation to 1.0 MHz
⢠Functionally Similar to the UC3823
⢠PbâFree Packages are Available*
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