Linear Technology LT1976B
The LT1976B does not shift into Burst Mode operation at low currents, eliminating low frequency output ripple at the expense of efficiency. The devices also have a power good flag with a programmable threshold and time-out and thermal shutdown protection.FEATURES
● Wide Input Range: 3.3V to 60V● 1.5A Peak Switch Current (LT1976)
● 100μA Quiescent Current (LT1976)**
● 1.6mA Quiescent Current (LT1976B)
● Low Shutdown Current: IQ < 1μA
● Power Good Flag with Programmable Threshold
● Load Dump Protection to 60V
● 200kHz Switching Frequency
● Saturating Switch Design: 0.2Ω On-Resistance
● Peak Switch Current Maintained Over Full Duty Cycle Range*
● 1.25V Feedback Reference Voltage
● Easily Synchronizable
● Soft-Start Capability
● Small 16-Pin Thermally Enhanced TSSOP Package U APPLICATIO S
● High Voltage Power Conversion
● 14V and 42V Automotive Systems
● Industrial Power Systems
● Distributed Power Systems
● Battery-Powered Systems , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Burst Mode is a registered trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. *Protected by U.S. Patents, including 6498466 **See Burst Mode Operation section for conditions DESCRIPTIO The LT®1976/LT1976B are 200kHz monolithic step-down switching regulators that accept input voltages up to 60V.