Electronic Components Datasheet Search |
|
LTC3882-1 Datasheet(PDF) 1 Page - Linear Technology |
|
LTC3882-1 Datasheet(HTML) 1 Page - Linear Technology |
1 / 22 page LTC3874-1 1 38741f For more information www.linear/LTC3874-1 PWM0 PWM1 LTC3874-1 INTVCC 0.22µF VCC0 VCC1 PHASMD LDWDCR ILIM FREQ GND RUN0 SYNC RUN1 FAULT0 FAULT1 RUN0 649 (0.29m DCR) 0.215µH (0.29m DCR) 0.215µH FAULT0 FAULT1 RUN1 SYNC REFER TO LTC3884-1 DATA SHEET FOR MASTER SETUP PIN NOT USED IN THIS CIRCUIT: EXTVCC ITH0 ITH1 VSENSE0+ 1.8V 100µF ×3 100µF ×3 470µF ×2 470µF ×2 LTC3884-1 ISENSE0+ ISENSE0– ISENSE1+ ISENSE1– ITH0 ITH1 VSENSE1+ VIN 7V TO 14V VOUT 1.8V 120A VIN PGOOD0 PGOOD1 MODE0 MODE1 38741 TA01a 100k DrMOS DrMOS + 0.22µF 4.7µF + 649 VIN = 12V VOUT = 1.8V fSW = 425kHz CCM EFFICIENCY POWER LOSS 0.29mΩ 1.5mΩ 0.29mΩ 1.5mΩ LOAD CURRENT (A) 0 10 20 30 40 50 60 70 80 90 100 110 120 70 75 80 85 90 95 100 2 5 8 11 14 17 20 38741 TA01b Typical applicaTion FeaTures DescripTion PolyPhase Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing The LTC®3874-1 is a dual PolyPhase® current mode syn- chronous step-down slave controller. It enables high cur- rent,multiphaseapplicationswhenpairedwithacompanion master controller by extending the phase count. Compat- ible master controllers include the LTC3884-1, LTC3774, LTC3875,LTC3877andLTC3866.TheLTC3874-1employs a unique architecture that enhances the signal-to-noise ratio of the current sense signal, allowing the use of sub- milliohm DC resistance power inductors to maximize efficiency while reducing switching jitter. Its peak current mode architecture allows for accurate phase-to-phase current sharing even for dynamic loads. Effectivelyworkingwithamastercontroller,theLTC3874-1 supports all the programmable features as well as fault protection. L , LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6144194, 6177787, 6580258, 5408150. applicaTions n High Current Distributed Power Systems n Telecom, Datacom and Storage Systems n Intelligent Energy Efficient Power Regulation High Efficiency, 4-Phase 1.8V/120A Step-Down Supply n 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 Operation n Wide VIN Range: 4.5 to 38V n VOUT Range : Up to 3.5V (LOWDCR Pin High) Up to 5.5V (LOWDCR Pin Low) n Proprietary Current Mode Control Loop n Programmable CCM/DCM Operation n Programmable Phase Shift Control n 24-Lead (4mm × 4mm) QFN Package 4-Phase Efficiency and Power Loss vs Output Current, Sub- Milliohm DCR vs Traditional DCR |
Similar Part No. - LTC3882-1 |
|
Similar Description - LTC3882-1 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |