LTC3855 - Multiphase Synchronous DC/DC Controller

Linear Technology (now Analog Devices)

Datasheet Details

Part number	LTC3855
Manufacturer	Linear Technology (now Analog Devices)
File Size	2.10 MB
Description	Multiphase Synchronous DC/DC Controller
Datasheet	LTC3855 Datasheet

General Description

The LTC®3855 is a dual PolyPhase® current mode synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages.

It includes a high speed differential remote sense amplifier.

The maximum current sense voltage is programmable for either 30mV, 50mV or 75mV, allowing the use of either the inductor DCR or a discrete sense resistor as the sensing element.

Overview

LTC3855 Dual, Multiphase Synchronous DC/DC Controller with Differential Remote.

Key Features

n Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n High Efficiency: Up to 95% n RSENSE or DCR Current Sensing n Programmable DCR Temperature Compensation n ±0.75% 0.6V Output Voltage Accuracy n Phase-Lockable Fixed Frequency 250kHz to 770kHz n True Remote Sensing Differential Amplifier n Dual N-Channel MOSFET Synchronous Drive n Wide VIN Range: 4.5V to 38V n VOUT Range: 0.6V to 12.5V without Differential Amplifier n VOUT Range: 0.6V to 3.3V with Di.

More Datasheets from Linear Technology (now Analog Devices)

Part Number	Description
LTC3850	2-Phase Synchronous Step-Down Switching Controller
LTC3850-1	2-Phase Synchronous Step-Down Switching Controller
LTC3850-2	2-Phase Synchronous Step-Down Switching Controller
LTC3851	Synchronous Step-Down Switching Regulator Controller
LTC3851-1	Synchronous Step-Down Switching Regulator Controller
LTC3851A	Synchronous Step-Down Switching Regulator Controller
LTC3851A-1	Synchronous Step-Down Switching Regulator Controller
LTC3853	Multiphase Synchronous Step-Down Controller
LTC3856	2-Phase Synchronous Step-Down DC/DC Controller
LTC3857	Synchronous Step-Down Controller