LTC3642EMS8E-5#PBF

LTC3642 is a high efficiency, high voltage step-down DC/DC converter with internal high side and synchronous power switches that draws only 12μA typical DC supply current at no load while maintaining output voltage regulation. This device combination of burst mode® operation, integrated power switches, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents. It is a robust converter suited for regulating a wide variety of power sources. Additionally, this device includes a precise run threshold and soft-start feature to guarantee that the power system start-up is well-controlled in any environment. It is widely used in application such as 4mA to 20mA current loops, industrial control supplies, distributed power systems, portable instruments, battery-operated devices, automotive power systems.

• Wide input voltage range is 4.5V to 45V
• Tolerant of 60V input transients
• Internal high side and low side power switches
• Output current is 50mA, no compensation required
• Low dropout operation: 100% duty cycle, low quiescent current is 12µA
• Feedback voltage reference is 0.8V
• Adjustable peak current limit
• Internal and external soft-start, output voltage is 5V
• Only three external components required for fixed output versions
• Operating temperature is –40°C to 125°C, packaging style is 8-lead plastic MSOP

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