LT1572 Overview
Key Features
- It combines an LT1172 with a 1A Schottky catch diode
- The LT1572 can be operated in all standard switching configurations, including boost, buck, SEPIC, flyback, forward, inverting and “Cuk”
- All necessary control, oscillator and protection circuitry is included on the die with the high efficiency switch
- This makes the part extremely easy to use and provides “bustproof” operation similar to that obtained with 3-pin linear regulators
- The LT1572 operates with supply voltages from 3V to 30V and draws only 6mA quiescent current
- It can deliver load power up to 15W with no external power devices
- By utilizing a current mode switching technique, the LT1572 achieves excellent response to load and line transients
- The LT1572 has many unique features not found on the more difficult to use control chips presently available
- It uses adaptive anti-sat switch drive to allow very wide ranging load currents with no loss in efficiency
- An externally activated shutdown mode reduces total supply current to 50µA typical for standby operation
