Micro Linear ML4825
The ML4825 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 to work in either voltage or current mode and provides for input voltage feed forward. The soft start pin doubles as a maximum duty cycle clamp.| Part No. | ML4825 |
|---|---|
| Datasheet | ML4825 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 while exceeding a 1.4V threshold initiates a soft-start cycle. An under-voltage lockout circuit with 800mV of hysteresis assures low startup current and drives the outputs low. This controller is similar in architecture and performance to the UC1825 controller, however the ML4825 includes many features not found on the 1825. 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) dual totem pole outputs Wide bandwidth error amplifier Fully latched logic with double pulse suppression Pulse-by-pulse current limiting Soft start and maximum duty cycle control Under voltage lockout with hysteresis Precision trimmed 5.1V bandgap reference...
