DESCRIPTION
The LT1268B and LT1268 are monolithic high power switching regulators. Identical to the popular LT1070, except for switching frequency (150kHz) and higher switch current, they can be operated in all standard switching configurations including buck, boost, flyback, and inverting. A high current, high efficiency switch is included on the die along with all oscillator, control, and protection circuitry. Integration of all functions allows the LT1268 to be built in standard 5-pin power packages. This makes it extremely easy to use and provides “bust proof” operations similar to that obtained with 3-pin linear regulators.

FEATURES
■ Wide Input Voltage Range: 3.5V to 30V
■ Low Quiescent Current: 7mA
■ Internal 7.5A Switch
■ Very Few External Parts Required
■ Self-Protected Against Overloads
■ Available in Standard and Surface Mount 5-Pin Packages
■ Can Be Externally Synchronized (See LT1072 Data Sheet)

APPLICATIONS
■ High Efficiency Boost Converter
■ PC Power Supply with Multiple Outputs
■ Battery Upconverter
■ Negative-to-Positive Converter