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3A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter
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LTC3612
3A, 4MHz Monolithic
Synchronous Step-Down
DC/DC Converter
Description Features n n n n n n n n n n n n n 3A Output Current
2.25V to 5.5V Input Voltage Range
Low Output Ripple Burst Mode® Operation: IQ = 70µA
±1% Output Voltage Accuracy
Output Voltage Down to 0.6V
High Efficiency: Up to 95%
Low Dropout Operation: 100% Duty Cycle
Shutdown Current: ≤1µA
Adjustable Switching Frequency: Up to 4MHz
Optional Active Voltage Positioning (AVP) with
Internal Compensation
Selectable Pulse-Skipping/Forced Continuous/
Burst Mode Operation with Adjustable Burst Clamp
Programmable Soft-Start
Inputs for Start-Up Tracking or External Reference
DDR Memory Mode, IOUT = ±1.5A
Available in Thermally Enhanced 20-Pin
(3mm × 4mm) QFN and TSSOP Packages Applications n n n The LTC®3612 is a low quiescent current monolithic synchronous buck regulator using a current mode, constant
frequency architecture. The no-load DC supply current …