Datasheet Linear Technology LTC3874EUF-1#PBF — Datenblatt

LTC3874-1
PolyPhase Step-Down
Synchronous Slave Controller with
Sub-Milliohm DCR Sensing
Features Description Phase Extender for High Phase Count Voltage Rails
n Operates with Power Blocks, DrMOS or External
Gate Drivers and MOSFETs
n Accurate Phase-to-Phase Current Sharing
n Sub-Milliohm DCR Current Sensing
n Phase-Lockable Fixed Frequency 250kHz to 1MHz
n Immediate Response to Master IC's Fault
n Up to 12-Phase Operatio Wide V Range: 4.5 to 38V
IN
n V
Range
: Up to 3.5V (LOWDCR Pin High)
OUT Up to 5.5V (LOWDCR Pin Low)
n Proprietary Current Mode Control Loop
n Programmable CCM/DCM Operatio Programmable Phase Shift Control
n 24-Lead (4mm × 4mm) QFN Package The LTC®3874-1 is a dual PolyPhase® current mode synchronous step-down slave controller. It enables high current, multiphase applications when paired with a companion
master controller by extending the phase count. Compatible master controllers include the LTC3884-1, LTC3774,
LTC3875, LTC3877 and LTC3866. The LTC3874-1 employs
a unique architecture that enhances the signal-to-noise …