The MAX8543/MAX8544 current-mode, constant-frequency PWM buck controllers operate from a 3V to 13.2V input supply and generate adjustable 0.8V to 0.9 x VIN output voltages at loads up to 25A. They feature adjustable switching frequency and synchronization for noise-sensitive applications. The MAX8543/MAX8544 can start with (or without) a preexisting bias on the output, without discharging the output. This feature simplifies tracking supply designs for core and I/O applications and redundant supply designs. The MAX8543/MAX8544 use the DC resistance of the output inductor as the current-sense element for lossless, low-cost current sensing. The current-sense threshold can be set to four discrete levels to accommodate inductors with different DC resistance values. The MAX8544 features a power-OK monitor and two MAX8544 controllers that can operate at 180° out-of-phase for dual-output applications.Learn More About PowerMind 
Feature
 
 
  
  - Prebias Startup/Monotonic 
 
  - 1% Output Accuracy 
 
  - Ceramic, Polymer, or Electrolytic Capacitors 
 
  - 200kHz to 1MHz Adjustable Frequency 
 
  - 160kHz to 1.2MHz Synchronization 
 
  - Lossless, Foldback Current Limit 
 
  - Overvoltage Protection 
 
  - Enable (On/Off) 
 
  - Adjustable Soft-Start 
 
  - MAX8544 
   
 
    - Latch-Off/Autorecovery 
 
    - Power-OK Monitor 
 
    - Out-of-Phase Clock Output 
 
   
  
 
 
  
Applications
 
 
 
  - Networks and Telecom
 
  - Servers
 
  - Storage
 
  - Wireless Base Stations