Low-Cost Current-Mode Controllers Fixed-Frequency Pulse-Width Modulation (PWM) 0.8V (min) Output Voltage Operates from Low 3V Input Voltage MAX1953 1MHz Switching Frequency Small Component Size, Low Cost Adjustable Current Limit MAX1954 3V to 13.2V Input Voltage 93% Efficiency 300kHz Switching Frequency Shutdown Feature All n-Channel MOSFET Design for Low Cost No Current-Sense Resistor Needed Internal Digital Soft-Start Surface-Mount Components Thermal-Overload Protection Small 10-Pin µMAX® Package MAX1953/MAX1954 Circuit Fully Assembled and Tested
- Graphic Cards and Video Cards
- Low-Voltage Distributed Power
- Microprocessor Core Supplies
- PCs and Servers
- Printers and Scanners
- Telecommunications and Networking
The MAX1953 evaluation kit (EV kit) demonstrates two low-cost, buck-controller application circuits. The MAX1953 application circuit features an adjustable current limit. The 1MHz switching frequency renders a small footprint. The MAX1954 application circuit operates from a 3V to 13.2V input voltage range and is adjustable independent of the supply voltage. The MAX1954 switches at 300kHz and boasts 93% efficiency with the supplied components.
This EV kit comes with the MAX1953 and MAX1954 evaluation circuits fully assembled and tested.