LTC3708EUH#PBF - 

制造商：

LINEAR TECHNOLOGY LINEAR TECHNOLOGY

制造商产品编号：

LTC3708EUH#PBF

仓库库存编号：

1273949

技术数据表：

(EN)

The LTC3708EUH#PBF is a 2-phase dual synchronous step-down Switching Regulator with output voltage up/down tracking capability. The IC allows either coincident or ratiometric tracking. Multiple LTC3708s can be daisy-chained in applications requiring more than two voltages to be tracked. Power supply sequencing is accomplished using an external soft-start timing capacitor. The LTC3708 uses a constant on-time, valley current-mode control architecture to deliver very low duty factors without requiring a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in input supply voltage. An internal phase-locked loop allows the IC to be synchronized to an external clock. Fault protection is provided by an output overvoltage comparator and an optional short-circuit shutdown timer. The regulator current limit level is user programmable. A wide supply range allows voltages as high as 36V to be stepped down to 0.6V output.

• Very fast transient response
• Programmable output voltage up/down tracking
• 2-phase operation reduces input capacitance
• 0.6V ±1% Output voltage reference
• External frequency synchronization
• Monotonic soft-start
• Onboard high current MOSFET drivers
• Adjustable cycle-by-cycle current limit
• Instant output overvoltage protection
• Optional short-circuit shutdown timer

• Power good output with 100μs Masking