LTC3605AIUF#PBF

LTC3605A is a high efficiency, monolithic synchronous buck regulator using a phase lockable controlled on-time constant frequency, current mode architecture. PolyPhase operation allows multiple device regulators to run out of phase while using minimal input and output capacitance. The operating supply voltage range is from 20V down to 4V, making it suitable for dual, triple or quadruple lithium-ion battery inputs as well as point of load power supply applications from a 12V or 5V rail. The high frequency capability allows the use of small surface mount inductors. The PHMODE pin allows user control of the phase of the outgoing clock signal. The unique constant frequency/controlled on-time architecture is ideal for high step-down ratio applications that are operating at high frequency while demanding fast transient response. It is widely used in application such as point of load power supply, portable instruments, distributed power systems, battery-powered equipment etc.

• High efficiency upto 96%
• 5A output current
• Input voltage range is 4V to 20V
• Integrated power N-channel MOSFETs (70mΩ top and 35mΩ bottom)
• PolyPhase® operation (upto 12 phases), output tracking
• Current mode operation for excellent line and load transient response
• Input DC supply current is 1.5mA typical, shutdown current is 11µA typical
• 22V absolute maximum VIN
• Feedback reference voltage is 0.6V typical
• Operating junction temperature is -40°C to 125°C, package style is 24-lead plastic QFN

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party