LTC3544 Description
The LTC®3544 is a quad, high efficiency, monolithic synchronous buck regulator using a constant-frequency, current mode architecture. The four regulators operate independently with separate run pins. The 2.25V to 5.5V input voltage range makes the LTC3544 well suited for single Li-Ion/polymer battery-powered applications.
LTC3544 Key Features
- High Efficiency: Up to 95%
- Four Independent Regulators Provide Up to 300mA
- 2.25V to 5.5V Input Voltage Range
- 2.25MHz Constant-Frequency Operation
- No Schottky Diodes Required
- Extremely Low Channel-to-Channel Transient
- Low Ripple (20mVP-P) Burst Mode Operation
- 0.8V Reference Allows Low Output Voltages
- Shutdown Mode Draws <1μA Supply Current
- Current Mode Operation for Excellent Line and Load