Electronic Components Datasheet Search |
|
LTC3865IFE Datasheet(PDF) 1 Page - Linear Technology |
|
LTC3865IFE Datasheet(HTML) 1 Page - Linear Technology |
1 / 36 page LTC3865/LTC3865-1 3865f Typical applicaTion DescripTion Dual, 2-Phase Synchronous DC/DC Controller with Pin Selectable Outputs The LTC®3865/LTC3865-1 are high performance dual synchronous step-down DC/DC switching regulator controllers that drive all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 770kHz. Power loss and noise are minimized by operating the two controller output stages out of phase. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. Independent track/soft-start pins for each controller ramp the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode® operation, pulse-skipping mode, and continuous inductor current mode. The output volt- ages can be precisely programmed by pin strapping or external resistors. The LTC3865/LTC3865-1 are available in low profile (5mm × 5mm) 32-pin QFN and 38-Lead thermally enhanced TSSOP packages. FeaTures applicaTions n Dual, 180° Phased Controllers n 2-Pin VID Output Voltage Programming from 0.6V to 5V n High Efficiency: Up to 95% n RSENSE or DCR Current Sensing n Phase-Lockable Fixed Frequency 250kHz to 770kHz n Adjustable Current Limit n Dual N-Channel MOSFET Synchronous Drive n Wide VIN Range: 4.5V to 38V Operation n Adjustable Soft-Start Current Ramping or Tracking n Output OV Protection With Reverse Current Limit n Power Good Output Voltage Monitor n 32-Pin 5mm × 5mm QFN and 38-Lead TSSOP Packages n DC Power Distribution Systems High Efficiency 1.5V/15A, 1.2V/15A Step-Down Converter 0.1µF 0.47µH 1000pF 1000pF 1000pF 22µF 50V 10k VOUT1 1.5V 15A 0.1µF 0.47µH 1000pF 100µF 15k 162k VOUT2 1.2V 15A TG1 TG2 BOOST1 BOOST2 SW1 SW2 BG1 BG2 SGND PGND FREQ SENSE1+ SENSE2+ SENSE1– SENSE2– VOSENSE1 VOSENSE2 ITH1 ITH2 VIN INTVCC TK/SS1 TK/SS2 VIN 4.5V TO 24V 3865 TA01a 0.1µF 100pF 0.1µF LTC3865 VID11 VID12 VID21 VID22 4.7µF 100µF COUT2,3 100pF 100Ω 100Ω 100Ω 100Ω 2.2Ω 1µF 2mΩ 2mΩ + COUT5,6 + + LOAD CURRENT (A) 30 90 100 20 10 80 50 70 60 40 0.01 1 10 100 3865 TA01b 0 0.1 10 1 0.01 0.1 VIN = 12V VOUT = 1.5V EFFICIENCY POWER LOSS Efficiency and Power Loss vs Load Current L , LT, LTC, LTM, Burst Mode, OPTI-LOOP, µModule, Linear Technology and the Linear logo are registered trademarks and No RSENSE is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6580258. |
Similar Part No. - LTC3865IFE |
|
Similar Description - LTC3865IFE |
|
|
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 |