LTC3857-1 - Synchronous Step-Down Controller

Product Overview

Linear Technology

Datasheet Details

Part number	LTC3857-1
Manufacturer	Linear Technology
File Size	423.71 KB
Description	Synchronous Step-Down Controller
Datasheet	LTC3857-1 Datasheet
Additional preview pages of the LTC3857-1 datasheet.

Product details

Description

Controller The LTC®3857-1 is a high performance dual step-down switching regulator 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 ESR 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.The LTC3857-1

Features

n Low Operating IQ: 50μA (One Channel On) n Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 24V n Wide VIN Range: 4V to 38V n RSENSE or DCR Current Sensing n Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n OPTI-LOOP® Compensation Minimizes COUT n Phase-Lockable Frequency (75kHz-850kHz) n Programmable Fixed Frequency (50kHz-900kHz) n Selectable Continuous, Pulse-Skipping or Low Ripple Burst Mode® Operation at Light Loads n Very Low Dropout Operation: 99% Duty.

📁 Similar Datasheet

LTC3852 - Synchronous Step-Down DC/DC Controller (Linear)
LTC3854 - Wide Vin Range Synchronous Step-Down DC/DC Controller (Linear Technology Corporation)
LTC3858-1 - Dual 2-Phase Synchronous Step-Down Controller (Linear Technology Corporation)
LTC3807 - Synchronous Step-Down Controller (Linear)
LTC3808 - Synchronous DC/DC Controller (Linear)
LTC3816 - DC/DC Controller (Linear)
LTC3823 - Step-Down Synchronous DC/DC Controller (Linear)
LTC3829 - Single Output Synchronous Step-Down DC/DC Controller (Analog Devices)

Other Datasheets by Linear Technology

LTC3857 - Synchronous Step-Down Controller
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

Published: Mar 19, 2010 |