LT3976EMSE#PBF

LT3976 is an adjustable frequency monolithic buck switching regulator. It accepts a wide input voltage range upto 40V. Low quiescent current design consumes only 3.3µA of supply current while regulating with no load. Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping the output ripple below 15mV in a typical application. This device can supply upto 5A of load current and has current limit foldback to limit power dissipation during short-circuit. A low dropout voltage of 500mV is maintained when the input voltage drops below the programmed output voltage, such as during automotive cold crank. An internally compensated current mode topology is used for fast transient response and good loop stability. It is widely used in application such as automotive battery regulation, portable products, industrial supplies etc.

• Minimum input voltage is 4.3V max
• Output current is 5A max
• Excellent start-up and dropout performance
• Switching frequency is 2.25MHz typ
• Accurate programmable undervoltage lockout
• Low shutdown current is 700nA
• Power good flag, soft-start capability, thermal shutdown protection
• Current limit foldback with soft-start override
• Operating temperature is -40°C to 125°C
• Packaging style is 16-lead plastic MSOP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party