LTC3890 LTC3890EUH LTC3890IUH LTC3890HUH LTC3890MPUH - Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
LTC3890 LTC3890EUH LTC3890IUH LTC3890HUH LTC3890MPUH - Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
The LTC3890 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 noise due to the ESR of the input capacitor are minimized by operating the two controller output stages out-of-phase.
The 50μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3890 features a precision 0.8V reference and power good output indicators. 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 foldback limits MOSFET heat dissipation during short-circuit conditions. The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous conduction mode at light loads. For a leaded package version (28-lead Narrow SSOP), see the LTC3890-1 data sheet.
Brand Name : POCCIO
Type : Voltage Regulator
Model Number : LTC3890
Origin : Mainland China
Condition : New