 |
전자부품 데이터시트 검색엔진 |
|
|
전자부품 데이터시트 검색엔진 |
|
LTC1709-7 데이터시트(PDF) 1 Page - Linear Technology |
|
|
|||||||||||||||||||||||||||||
LTC1709-7 데이터시트(HTML) 1 Page - Linear Technology |
|
|
1 / 28 page  1 LTC1709-7 The LTC ®1709-7isa2-phase,VIDprogrammable,synchro- nous step-down switching regulator controller that drives two all N-channel external power MOSFET stages in a fixed frequency architecture. The 2-phase 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 2-phase technique effectively multiplies the fundamental frequency by two, improving transient re- sponse while operating each channel at an optimum fre- quency for efficiency. Thermal design is also simplified. An operating mode select pin (FCB) can be used to regu- late a secondary winding or select among three modes including Burst Mode TM operation for highest efficiency. An internal differential amplifier provides true remote sensing of the regulated supply’s positive and negative output ter- minals as required in high current applications. The RUN/SS pin provides 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 compensation allows the transient response to be optimized for a wide range of output capacitors and ESR values. 2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switching Regulator , LTC and LT are registered trademarks of Linear Technology Corporation. OPTI-LOOP and Burst Mode are trademarks of Linear Technology Corporation. Figure 1. High Current Dual Phase Step-Down Converter s Mobile/Desktop Computers s Internet Servers s Large Memory Arrays s DC Power Distribution Systems s Output Stages Operate Antiphase Reducing Input Capacitance Requirements and Power Supply Induced Noise s Dual Input Supply Capability for Load Sharing s 5-Bit Mobile VID Code: VOUT = 0.925V to 2V s Current Mode Control Ensures Current Sharing s True Remote Sensing Differential Amplifier s Power Good Output Indicator s OPTI-LOOP TM Compensation Minimizes COUT s Three Operational Modes: PWM, Burst and Cycle Skip s Programmable Fixed Frequency: 150kHz to 300kHz s ±1% Output Voltage Accuracy s Wide VIN Range: 4V to 36V Operation s Adjustable Soft-Start Current Ramping s Internal Current Foldback and Short-Circuit Shutdown s Overvoltage Soft Latch Eliminates Nuisance Trips s Active Voltage Positioning Capable s Available in 36-Lead Narrow SSOP Package 170989 F01 TG1 BOOST1 SW1 BG1 PGND SENSE1+ SENSE1– TG2 BOOST2 SW2 BG2 INTVCC SENSE2+ SENSE2– VIN RUN/SS FCB VDIFFOUT ITH ATTENIN ATTENOUT EAIN VID0–VID4 VOS – VOS + LTC1709-7 SGND PGOOD 0.1 µF 220pF 5 VID BITS S S 3.3k 10 µF 35V ×4 + + COUT 1000 µF 4V ×2 VOUT 0.925V TO 2V 40A 1 µH 0.002 Ω 0.002 Ω VIN 5V TO 28V 1 µH 0.47 µF 0.47 µF 10 µF FEATURES DESCRIPTIO APPLICATIO S TYPICAL APPLICATIO |
유사한 부품 번호 - LTC1709-7_15 |
|
유사한 설명 - LTC1709-7_15 |
|
|
|
링크 URL |
| ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크 투 데이터시트 | 링크교환 | 제조사별 검색 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 |
Korean ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
