LTC3548-1
Description
The LTC®3548-1 is a dual, fixed output, constant-frequency, synchronous step-down DC/DC converter. Intended for low power applications, it operates from 2.5V to 5.5V input voltage range and has a constant 2.25MHz switching frequency, allowing the use of tiny, low cost capacitors and inductors with a profile ≤1mm.
Key Features
- Very Low Quiescent Current: Only 40μA n 2.25MHz Constant-Frequency Operation
- High Switch Current: 1.2A and 0.7A
- No Schottky Diodes Required
- VIN: 2.5V to 5.5V
- Current Mode Operation for Excellent Line and Load Transient Response
- Short-Circuit Protected
- Low Dropout Operation: 100% Duty Cycle
- Ultralow Shutdown Current: IQ < 1μA
- Small Thermally Enhanced 3mm × 3mm DFN Packages
