Simplified Block Diagram
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- 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
- Power-OK Monitor
- Out-of-Phase Clock Output
- Networks and Telecom
- Wireless Base Stations
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.
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