DESCRIPTION
The LT®1961 is a 1.25MHz monolithic boost switching regulator. A high efficiency 1.5A, 0.2Ω switch is included on the die together with all the control circuitry required to complete a high frequency, current-mode switching regulator. Current-mode control provides fast transient response and excellent loop stability.

FEATURES
■ 1.5A Switch in a Small MSOP Package
■ Constant 1.25MHz Switching Frequency
■ Wide Operating Voltage Range: 3V to 25V
■ High Efficiency 0.2Ω Switch
■ 1.2V Feedback Reference Voltage
■ ±2% Overall Output Voltage Tolerance
■ Uses Low Profile Surface Mount External Components
■ Low Shutdown Current: 6μA
■ Synchronizable from 1.5MHz to 2MHz
■ Current-Mode Loop Control
■ Constant Maximum Switch Current Rating at All Duty Cycles*
■ Thermally Enhanced Exposed Pad 8-Lead Plastic MSOP Package

APPLICATIONS
■ DSL Modems
■ Portable Computers
■ Battery-Powered Systems
■ Distributed Power