LTC3418EUHF#TRPBF Switching Voltage Regulators 8A Mono Sync Buck Reg 

Description
TheLTC@3418is a high eficiency, monolithic synchronous
step-down DC/DC converter uilizing aconstantfrequency,
currentmode architecture. ltoperates from an inputvoltage
range of 2.25V to 5.5V and provides a regulated output
voltage from 0.8V to 5V while delivering up to 8A of output
current. The internal synchronous power switch increases
efficiency and eliminates the need for an external Schottky
diode. Switching frequency is set by an external resistor
or can be synchronized to an external clock. OPTI-LOOPB
compensation allows the transient response to be optimized
over a wide range of loads and output capacitors.
The LTC3418 can be configured for either Burst Mode
operation or forced continuous operation. Forced con-
tinuous operation reduces noise and RF interference
while Burst Mode operation provides high eficiency by
reducing gate charge losses at light loads. In Burst Mode
operation, external control of the burst clamp level alows
the output voltage ripple to be adjusted according to the
requirements of the application. A tracking input in the
LTC3418 allows for proper sequencing with respect to
another power supply.

FEATURES
■High Efficiency: Up to 95%
■8A Output Current
■2.25V to 5.5V Input Voltage Range
■Low Ros(ON) Internal Switch: 35mQ2
■Tracking Input to Provide Easy Supply Sequencing
■Programmable Frequency: 300kHz to 4MHz
■0.8V +1% Reference Allows Low Output Voltage
■Quiescent Current: 380μA
■Selectable Forced Continuous/Burst Modee Operation
  with Adjustable Burst Clamp
■Synchronizable Switching Frequency
■Low Dropout Operation: 100% Duty Cycle
■Power Good Output Voltage Monitor
■Overtemperature Protected
■38-Lead Low Profile (0.75mm) Thermally Enhanced
  QFN (5mm x 7mm) Package

APPLICATIONS
■Microprocessor, DSP and Memory Supplies
■Distributed 2.5V, 3.3V and 5V Power Systems
■Automotive Applications
■Point of Load Regulation
■Notebook Computers