Micro Linear ML4823
The ML4823 High Frequency PWM Controller is an IC controller optimized for use in Switch Mode Power Supply designs running at frequencies to 1MHz. This controller is designed for single-ended applications using voltage or current mode and provides for input voltage feed forward. The soft start pin doubles as a maximum duty cycle clamp.| Part No. | ML4823 |
|---|---|
| Datasheet | ML4823 Download |
| Manufacturer |  Micro Linear |
| Description | High Frequency Power Supply Controller |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Propagation delays are minimal through the comparators and logic for reliable high frequency operation while slew rate and bandwidth are maximized on the error amplifier. A 1V threshold current limit comparator provides cycleby-cycle current limit and exceeding a 1.4V threshold initiates a soft-start cycle. All logic is fully latched to provide jitter-free operation and prevent multiple pulsing. An under-voltage lockout circuit with 800mV of hysteresis assures low startup current and drives the outputs low during fault conditions. This controller is an improved second source for the UC3823 controller; however, the ML4823 includes features not found on the 3823. These features are set in italics.FEATURES
s s s s s s s s s s s s s Practical operation at switching frequencies to 1.0MHz High current (2A peak) totem pole output Wide bandwidth error amplifier Fully latched logic with double pulse suppression Pulse-by-pulse current limiting Soft start and max. duty cycle...
