Description
The LTC®3868-1 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages.
A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz.
Features
- n Low Operating IQ: 170μA (One Channel On) n Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 14V n Wide VIN Range: 4V to 24V n RSENSE or DCR Current Sensing n Out-of-Phase Controllers Reduce Required Input
Capacitance and Power Supply Induced Noise n OPTI-LOOP® Compensation Minimizes COUT n Phase-Lockable Frequency (75kHz to 850kHz) n Programmable Fixed Frequency (50kHz to 900kHz) n Selectable Continuous, Pulse-Skipping or
Burst Mode® Operation at Light Loads n Very Low Dropout Operation: 99% Duty Cycl.