IC reference design search
IC manufacturers Analog Devices

IC manufacturers (108)

reference designLTC7852-1

Analog Devices LTC7852-1

Dual Output, 6-Phase,Multiphase Current Mode Synchronous Controller with Current Monitoring

Overview

TopologyBuck Converter
Input voltage4.5-5.5 V
Switching frequency250-1200 kHz
Output 10.5 V / 330 A

Description

The LTC®7852/LTC7852-1 is a six-phase, dual outputcurrent mode synchronous step-down switching regulatorcontroller that works in conjunction with externalpower train devices such as DrMOS, power blocks ordiscrete N-channel MOSFETs and associated gate drivers.Its flexible design enables 1-, 2-, 3-, 4-, 5-, and 6-phaseconfigurations. The LTC7852 offers a unique feature thatenhances the signal-to-noise ratio of the current sensesignal, allowing the use of inductors with very low DCwinding resistances for maximum efficiency. The controllerachieves a minimum on-time of just 40ns, permitting theuse of high switching frequency at high step-down ratios.8-, 10- or 12 phases with two ICs can be paralleled forvery high current requirements up to 400A.

Features

  • Sub-Milliohm DCR Sensing or DrMOS with CurrentSense Improves Efficiency
  • Operates with Power Blocks, DrMOS or External Gate Drivers and MOSFETs
  • ±0.5% Total Output Voltage Accuracy
  • Flexible Phase Configuration
  • Dual Output Current Monitoring
  • tON(MIN) = 40ns, Capable of Very Low Duty Cycles atHigh Frequency
  • Dual Differential Remote Sensing Amplifiers
  • Programmable Frequency Range of 250kHz to 1.2MHz
  • VIN Range Is Not Limited by IC
  • VCC Range: 4.5V to 5.5V
  • VOUT Range: 0.5V to 2.0V
  • 48 Lead (5mm × 6mm) GQFN for LTC7852
  • 36 Lead (4mm × 5mm) QFN for LTC7852-1

Typical applications

  • Telecom and Datacom Systems
  • DC Power Distribution Systems
  • Computer Systems

More information

Parts approved by Analog Devices

Log in now to view availability and request availability forecasts. LOGIN
Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(nH)
LR(nH)
IR(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
SamplesAvailability & Sample
Log in now to view availability and request availability forecasts. LOGIN
744309025
SPECWE-HCM SMT High Current Flat Wire Inductor, 250 nH, 245 nH

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCM SMT High Current Flat Wire Inductor
Inductance250 nH
Rated Inductance245 nH
Rated Current47.5 A
Saturation Current @ 10%75.6 A
Saturation Current @ 30%88.5 A
DC Resistance0.165 mΩ
Self Resonant Frequency37 MHz
MaterialMnZn 
–Check availability