Datasheet Linear Technology LTC3890EUH-2#PBF — 数据表

LTC3890-2
60V Low IQ, Dual, 2-Phase
Synchronous Step-Down
DC/DC Controller
DESCRIPTION FEATURES n The LTCВ®3890-2 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 phaselockable 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. Wide VIN Range: 4V to 60V (65V Abs Max)
Low Operating IQ: 50ОјA (One Channel On)
Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 24V
RSENSE or DCR Current Sensing
Out-of-Phase Controllers Reduce Input Capacitance
and Power Supply Induced Noise
Phase-Lockable Frequency (75kHz to 850kHz)
Programmable Fixed Frequency (50kHz to 900kHz)
Selectable Continuous, Pulse-Skipping or Low Ripple
Burst ModeВ® Operation at Light Loads
Selectable Current Limit
Very Low Dropout Operation: 99% Duty Cycle
Adjustable Output Voltage Soft-Start or Tracking
Power Good Output Voltage Monitors …