Maxim introduces the MAX8737, a dual, high-power, linear-regulator controller used with external n-channel MOSFETs to generate two independent low-voltage supplies for notebook computers. The regulator delivers low output voltages from 0.5 to 2.5 V, and the external MOSFETs allow scalable current design with highly regulated (1%) loads up to 5 A. The MAX8737 operates from a low input voltage, which also reduces the power dissipation in the external n-channel MOSFETs. An external resistive divider is used to fold back the current limit, thereby reducing the overall power dissipation. An output undervoltage timeout is included for low-cost applications that omit the current-sense resistor. The MAX8737 is screened for the extended-industrial temperature range ( 40° C to +85° C), and is available in a small, 16-pin, 4 × 4 mm TQFN package.
Maxim Integrated Products