 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LTC1629C Datasheet(PDF) 1 Page - Linear Technology |
|
||||||||||||||||||||||||||||||
LTC1629C Datasheet(HTML) 1 Page - Linear Technology |
|
|
1 / 28 page  1 LTC1629/LTC1629-PG PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulators , LTC and LT are registered trademarks of Linear Technology Corporation. OPTI-LOOP and PolyPhase are trademarks of Linear Technology Corporation. The LTC ®1629/LTC1629-PG are multiple phase, dual, synchronous step-down current mode switching regula- tor controllers that drive N-channel external power MOSFET stages in a phase-lockable fixed frequency architecture. The PolyPhase TM controller drives its two output stages out of phase at frequencies up to 300kHz to minimize the RMS ripple currents in both input and output capacitors. The output clock signal allows expansion for up to 12 evenly phased controllers for systems requiring 15A to 200A of output current. The multiple phase technique effectively multiplies the fundamental frequency by the number of channels used, improving transient response while operating each channel at an optimum frequency for efficiency. Thermal design is also simplified. An internal differential amplifier provides true remote sensing of the regulated supply’s positive and negative output terminals as required for high current applications. A RUN/SS pin provides both soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when the overcurrent latchoff is disabled. OPTI-LOOP compensa- tion allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC1629-PG includes a power good output pin that re- places the AMPMD control pin of the LTC1629. Figure 1. High Current Dual Phase Step-Down Converter s Desktop Computers s Internet Servers s Large Memory Arrays s DC Power Distribution Systems s Dual Controller Operates from One to Twelve Phases s Reduces Required Input Capacitance and Power Supply Induced Noise s Current Mode Control Ensures Current Sharing s Phase-Lockable Fixed Frequency: 150kHz to 300kHz s 1.8MHz Effective Switching Frequency s True Remote Sensing Differential Amplifier s OPTI-LOOP TM Compensation Reduces COUT s ±1% Output Voltage Accuracy s Power Good Output Voltage Monitor (LTC1629-PG) s Wide VIN Range: 4V to 36V Operation s Very Low Dropout Operation: 99% Duty Cycle s Adjustable Soft-Start Current Ramping s Internal Current Foldback Plus Shutdown Timer s Overvoltage Soft-Latch Eliminates Nuisance Trips s Micropower Shutdown s Available in 28-Lead SSOP Package 1629 TA01 TG1 BOOST1 SW1 BG1 PGND SENSE1+ SENSE1– TG2 BOOST2 SW2 BG2 INTVCC SENSE2+ SENSE2– VIN RUN/SS EAIN ITH VDIFFOUT VOS – VOS + LTC1629-PG SGND 0.1 µF PGOOD 0.1 µF 16k 1000pF S S S S S S S S 10 Ω 3.3k 16k 10 µF ×4 35V CERAMIC + COUT 1000 µF ×2 4V L1, L2: CEPH149-IROMC COUT: T510E108K004AS D1, D2: UP5840 M1, M3: IRF7811 M2, M4: IRF7809 VOUT 1.6V/40A L1 1 µH 0.003 Ω VIN 5V TO 28V L2 1 µH D2 D1 M1 M2 ×2 M3 M4 ×2 0.47 µF S 0.47 µF 10 µF 0.003 Ω APPLICATIO S FEATURES TYPICAL APPLICATIO DESCRIPTIO |
Similar Part No. - LTC1629C |
|
Similar Description - LTC1629C |
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
