Микросхемы и комплектующие LTC7800HUDC#PBF

DC/DC контроллер , синхронный понижающий, 4В до 60В питание, 98% коэффициент заполнения, 2.25МГц

The LTC7800HUDC#PBF from Linear Technology is a low IQ, 60V, high frequency synchronous step-down controller in 20 pin QFN package. This high performance step-down switching regulator DC to DC controller that drives an all N-channel synchronous power MOSFET stage. A constant frequency current mode architecture allows a phase-lockable frequency of up to 2.25MHz. The 50µA no-load quiescent current extends operating run time in battery powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC7800 features a precision 0.8V reference and power good output indicator. A wide 4V to 60V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries. The output voltage of LTC7800 can be programmed between 0.8V to 24V. The TRACK/SS pin ramps the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.

• Low operating IQ of 50µA, RSENSE or DCR current sensing
• Phase lockable frequency (320KHz to 2.25MHz)
• Programmable fixed frequency (320KHz to 2.25MHz)
• Selectable continuous, pulse skipping or low ripple burst mode operation at light load
• Selectable current limit, no current foldback during start-up
• Very low dropout operation, 98% duty cycle
• Adjustable output voltage, soft start or tracking
• Power good output voltage monitor, output overvoltage protection
• Low shutdown IQ of <14µA, internal LDO powers gate drive from VIN or EXTVCC
• Operating temperature range from -40°C to 150°C

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Управление Питанием, Авто Market demand for this product has caused an extension in lead times, delivery dates may fluctuate