开关稳压器 LT1377 - 500kHz and 1MHz High Efficiency 1.5A Switching Regulators
DESCRIPTION
The LT® 1372/LT1377 are monolithic high frequency switching regulators. They can be operated in all standard switching configurations including boost, buck, flyback, forward, inverting and “Cuk.” A 1.5A high efficiency switch is included on the die, along with all oscillator, control and protection circuitry. All functions of the LT1372/LT1377 are integrated into 8-pin SO/PDIP packages.
FEATURES
■ Faster Switching with Increased Efficiency
■ Uses Small Inductors: 4.7µH
■ All Surface Mount Components
■ Only 0.5 Square Inch of Board Space
■ Low Minimum Supply Voltage: 2.7V
■ Quiescent Current: 4mA Typ
■ Current Limited Power Switch: 1.5A
■ Regulates Positive or Negative Outputs
■ Shutdown Supply Current: 12µA Typ
■ Easy External Synchronization
■ 8-Pin SO or PDIP Packages
APPLICATIONS
■ Boost Regulators
■ CCFL Backlight Driver
■ Laptop Computer Supplies
■ Multiple Output Flyback Supplies
■ Inverting Supplies
