LT3791HFE-1#PBF

LT®3791-1 is a synchronous 4-switch buck-boost voltage/current regulator controller. The controller can regulate output voltage, output current, or input current with input voltages above, below, or equal to the output voltage. The constant-frequency, current mode architecture allows its frequency to be adjusted or synchronized from 200KHz to 700KHz. No top FET refresh switching cycle is needed in buck or boost operation. With 60V input, 60V output capability and seamless transitions between operating regions, this is ideal for voltage regulator, battery/super-capacitor charger applications in automotive, industrial, telecom, and even battery-powered systems. Typical applications are automotive, telecom, industrial systems, high power battery-powered system.

• 4-switch single inductor architecture allows VIN above, below or equal to VOUT
• Synchronous switching: up to 98.5% efficiency
• Input and output current regulation with current monitor outputs
• No top FET refresh in buck or boost, VOUT disconnected from VIN during shutdown
• C/10 charge termination and output shorted flags, capable of 100W or greater per IC
• VIN operating voltage range from 4.7 to 60V (TA=25°C, VIN=12V, VEN/UVLO=12V)
• VIN shutdown IQ is 1µA (VEN/UVLO=0V)
• 38-lead plastic TSSOP package
• Temperature rating range from –40°C to 150°C

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