5V Adjustable, 10W, CMOS, Step-Up, Switching Regulator Controller

The MAX641/MAX642/MAX643 step-up switching regulators are designed for minimum component DC-DC converter circuits in the 5mW to 10W range.

Low-power applications require only an output filter capacitor and a small, low-cost inductor. An additional MOSFET or bipolar transistor is needed for high-power applications. Low battery detection circuitry is included on chip.

The MAX641/642/643 are preset for +5V, +12V, and + 15V outputs, respectively. However, the regulators can be set to other levels by adding 2 resistors. Maxim manufactures a broad line of step-up, step-down, and inverting DC-DC converters with features such as logiclevel shutdown, adjustable oscillator frequency, and external MOSFET drive. See Table 3 for a summary of other DC-DC converter products.

APPLICATIONS

* Simple, High-Efficiency DC-DC Converters

* Uninterruptible Board-Level Power Supplies

* Power Conditioning for Battery Systems

* Portable Instruments and Communications

* Fixed +5V, +12V, +15V Output Voltages

* Adjustable Output with 2 Resistors

* On-Chip Driver for High-Power External MOSFET