LTC3636EUFD-1#PBF

LTC3636-1 is a high efficiency, dual channel monolithic synchronous buck regulator using a controlled on-time current mode architecture, with phase lockable switching frequency. The operating supply voltage range is from 3.1V to 20V, making it suitable for lithium-ion battery stacks as well as point of load power supply applications from a 12V or 5V input. The operating frequency is programmable from 500kHz to 4MHz with an external resistor and may be synchronized to an external clock signal. The high frequency capability allows the use of small surface mount inductors and capacitors. The unique constant frequency/controlled ontime architecture is ideal for high step-down ratio applications that operate at high frequency while demanding fast transient response. Typical applications are distributed power systems, battery-powered instruments and point-of-load power supplies.

• Can select between forced continuous mode and high efficiency Burst Mode operation
• Wide VIN range from 3.1V to 20V
• Wide VOUT range from 1.8V to 12V
• Output current per channel is 6A, high efficiency is up to 95%
• Die temperature monitor, external frequency synchronization
• Current mode operation for excellent line and load transient response
• Output voltage tracking and soft-start capability, short-circuit protected
• Overvoltage input and overtemperature protection, power good status outputs
• 28-lead (4mm × 5mm) plastic QFN package
• Temperature rating range from –40°C to 125°C

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