LTC3890 LTC3890EGN-3 LTC3890IGN-3 LTC3890HGN-3 LTC3890MPGN-3 - 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
LTC3890 LTC3890EGN-3 LTC3890IGN-3 LTC3890HGN-3 LTC3890MPGN-3 - 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
The LTC3890-3 is a high performance dual step-down switching regulator DC/DC 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. Power loss and supply noise are minimized by operating the two controller output stages out-of-phase.
The 50μA no-load quiescent current extends operating life in battery-powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. A wide 4V to 60V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries.
Independent TRACK/SS pins for each controller ramp the output voltages during start-up. Current mode control limits the inductor current during short-circuit conditions. The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous conduction mode at light loads.
For versions with different and/or additional features, see the LTC3890 family summary, Table 1, in the Pin Functions section of this data sheet.
Origin : US(Origin)
Model Number : LTC3890
Condition : New
Type : Drive IC