LTC3644-2
Overview
The LTC®3644/LTC3644-2 is a quad 1.25A output, high efficiency synchronous monolithic step-down regulator capable of operating from input supplies up to 17V. The switching frequency is internally fixed to 1MHz or 2.25MHz with a ±50% synchronization range.
- Quad Step-down Outputs: 1.25A per Channel
- Wide VIN Range: 2.7V to 17V
- Wide VOUT Range: 0.6V to VIN
- 1.25A/2.5A/3.75A/5A IOUT Configurable with One Inductor
- Integrated 300mΩ P-Channel/80mΩ N-Channel MOSFETs Provide Up to 93% Efficiency
- No-Load Burst Mode Operation IQ < 10µA with All Channels Enabled
- Constant Frequency (1MHz/2.25MHz) with ±50% Frequency Synchronization Range n ±1% Output Voltage Accuracy
- Current Mode Operation for Excellent Line and Load Transient Response
- Full Dropout Operation (100% Duty Cycle)
- Phase Shift Programmable with External Clock
