ANALOG DEVICES LTC3621EMS8E-23.3#PBF DC-DC Switching Synchronous Buck Regulator, Fixed, 2.7 to 17V in, 3.3V / 1A Out, MSOP-8

LTC3621EMS8E-23.3#PBF is a high-efficiency, synchronous monolithic step-down regulator. This regulator features ultralow quiescent current and high efficiencies over a wide VOUT range. The step-down regulator operates from an input voltage range of 2.7V to 17V and provides an adjustable output range from 0.6V to VIN while delivering up to 1A of output current. A user-selectable mode input is provided to allow the user to trade off ripple noise for light load efficiency; Burst Mode operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest voltage ripple. The MODE pin can also be used to allow the user to sync the switching frequency to an external clock. It is used in applications such as portable handheld scanners, industrial and embedded computing, automotive applications, emergency radio.

• Wide VIN range from 2.7V to 17V, wide VOUT range from 0.6V to VIN
• Current mode operation for excellent line and load transient response
• Synchronizable to external clock, full dropout operation with low IQ
• Internal compensation and soft-start, overtemperature protection
• Input quiescent current is 0.1µA typical at (shutdown mode, VRUN = 0V, TJ = 25°C)
• Output voltage load regulation is 0.1% typical at (TJ = 25°C)
• Internal soft-start time is 0.8ms typical at (TJ = 25°C)
• Oscillator frequency is 2.25MHz typical at (TJ = 25°C)
• Minimum on-time is 60ns typical at (TJ = 25°C)
• Operating junction temperature range from -40°C to 125°C, 8-lead plastic MSOP

Notes

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