LTC3411A
1.25A, 4MHz, Synchronous
Step-Down DC/DC Converter
Description Features n n n n n n n n n n Uses Tiny Capacitors and Inductor
High Frequency Operation: Up to 4MHz
Low RDS(ON) Internal Switches: 0.15Ω
High Efficiency: Up to 96%
Selectable Low Ripple (25mVP-P) Burst Mode®
Operation: IQ = 40µA
Stable with Ceramic Capacitors
Current Mode Operation for Excellent Line
and Load Transient Response
Short-Circuit Protected
Low Dropout Operation: 100% Duty Cycle
Low Shutdown Current: IQ ≤ 1µA
Output Voltages from 0.8V to 5V
Synchronizable to External Clock
Supports Pre-Biased Outputs
Small 10-Lead 3mm × 3mm DFN or MSOP Package Applications n n n n n The LTC®3411A is a constant frequency, synchronous
step-down DC/DC converter. Intended for medium power
applications, it operates from a 2.5V to 5.5V input voltage
range and has a user configurable operating frequency up
to 4MHz, allowing the use of tiny, low cost capacitors and …