LTC3604EUD#PBF

LTC®3604 is a high efficiency, monolithic synchronous buck regulator using a phase-lockable controlled on-time, current mode architecture capable of supplying up to 2.5A of output current. The operating frequency is programmable from 800KHz to 4MHz with an external resistor enabling the use of small surface mount inductors. This unique constant frequency/controlled on-time architecture is ideal for high step-down ratio applications that demand high switching frequencies and fast transient response. This offers two operational modes: Burst Mode operation and forced continuous mode to allow the user to optimize output voltage ripple, noise, and light load efficiency for a given application. Maximum light load efficiency is achieved with the selection of burst mode operation while forced continuous mode provides minimum output ripple and constant frequency operation. Typical applications are distributed power systems, lithium-ion battery-powered instruments, point-of-load power supplies.

• An internal phase-locked loop aligns the on-time of top power MOSFET to the internal/external clock
• Can be externally synchronized over the same frequency range
• 3.6V to 15V operating input voltage range
• Very low duty cycle operation is 5% at 2.25MHz, external frequency synchronization
• Current mode operation for excellent line and load transient response
• 0.6V reference allows low output voltages, short-circuit protected
• Output voltage tracking capability, power good status output
• Feedback pin input current is ±30nA (VFB=0.6V)
• 16-lead plastic QFN package
• Temperature rating range from -40°C to 125°C

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