LTC7810HLXE#PBF

LTC7810HLXE#PBF is a dual, 2-phase synchronous step-down DC/DC controller. It is a high-performance dual step-down DC/DC switching regulator controller that drives all N-channel synchronous power MOSFET stages, capable of operating from voltages up to 140V. A constant frequency current mode architecture allows for a phase-lockable frequency of up to 720KHz. The low no-load quiescent current extends operating runtime in battery-powered systems. It features a precision 1V reference, enabling the output voltage to be programmed from 1V to 60V. The gate drive voltage for the LTC7810 can be programmed to 6V, 8V, or 10V to allow the use of logic-level or standard-threshold FETs and to maximize efficiency. Applications include automotive and transportation, industrial and telecommunications, military/avionics.

• 4.5 to 140V input supply operating range (TA=25°C, VIN=12V, RUN1,2=5V, EXTVCC=0V, DRVSET=INTVCC)
• Wide output voltage range from 1V ≤ VOUT ≤ 60V
• Shutdown VIN current is 1.5μA typ (TA=25°C, VIN=12V, RUN1,2=5V, EXTVCC=0V, DRVSET=INTVCC)
• Adjustable gate drive level up to 10V, optional spread spectrum operation
• Very low dropout 100% duty cycle operation, low IQ in dropout is 78µA (one channel on)
• RSENSE or inductor DCR current sensing
• Out-of-phase controllers reduce required input capacitance and power supply induced noise
• Selectable continuous, pulse-skipping, or low ripple Burst Mode® Operation at light loads
• Onboard LDO or external NMOS LDO for DRVCC, EXTVCC LDO powers drivers from VOUT
• 48 lead eLQFP-EP package, operating junction temperature range from -40°C to 150°C

附註

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