LT1976EFE Datasheet

PMIC - Voltage Regulators - DC DC Switching Regulators


The LT1976EFE is a 200kHz monolithic buck switchingregulator that accepts input voltages up to 60V. A highefficiency 1.5A, 0.2W switch is included on the die alongwith all the necessary oscillator, control and logic circuitry.Current mode topology is used for fast transientresponse and good loop stability.Innovative design techniques along with a new high voltageprocess achieve high efficiency over a wide inputrange. Efficiency is maintained over a wide output currentrange by employing Burst Mode operation at low currents,utilizing the output to bias the internal circuitry, and byusing a supply boost capacitor to fully saturate the powerswitch. Patented circuitry maintains peak switch currentover the full duty cycle range.* Shutdown reduces inputsupply current to less than 1mA. External synchronizationcan be implemented by driving the SYNC pin with logic-levelinputs. A single capacitor from the CSS pin to the outputprovides a controlled output voltage ramp (soft-start). Thedevice also has a power good flag with a programmablethreshold and time-out and thermal shutdown protection.The LT1976 is available in a 16-pin TSSOP package withexposed pad leadframe for low thermal resistance. LT1976EFE Features &bull; Wide Input Range: 3.3V to 60V&bull; 1.5A Peak Switch Current&bull; Burst Mode&reg; Operation: 100mA Quiescent Current**&bull; Low Shutdown Current: IQ < 1mA&bull; Power Good Flag with Programmable Threshold&bull; Load Dump Protection to 60V&bull; 200kHz Switching Frequency&bull; Saturating Switch Design: 0.2W On-Resistance&bull; Peak Switch Current Maintained OverFull Duty Cycle Range*&bull; 1.25V Feedback Reference Voltage&bull; Easily Synchronizable&bull; Soft-Start Capability&bull; Small 16-Pin Thermally Enhanced TSSOP Package LT1976EFE Applications &bull; High Voltage Power Conversion&bull; 14V and 42V Automotive Systems&bull; Industrial Power Systems&bull; Distributed Power Systems&bull; Battery-Powered Systems


[{"Name":"Number of Outputs","Value":"1"},{"Name":"Voltage - Output","Value":"1.2 V ~ 54 V"},{"Name":"Voltage - Input","Value":"3.3 V ~ 60 V"},{"Name":"Frequency - Switching","Value":"200kHz"},{"Name":"Current - Output","Value":"1.5A"},{"Name":"Operating Temperature","Value":"-40°C ~ 125°C"},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information


ON Semiconductor - ON Semiconductor (Nasdaq: ON) is driving energy efficient innovations, empowering customers to reduce global energy use. The company offers a comprehensive portfolio of energy efficient power and signal management, logic, discrete and custom solutions to help design engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power supply applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.

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