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LTC1876 Datasheet(PDF) 36 Page - Linear Technology |
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LTC1876 Datasheet(HTML) 36 Page - Linear Technology |
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36 / 36 page  LTC1876 36 1876fa PART NUMBER DESCRIPTION COMMENTS LTC1625/LTC1775 No RSENSE TM Current Mode Synchronous Step-Down Controllers Burst Mode Operation, GN-16 LTC1628/LTC1628-PG High Efficiency, Dual, 2 Phase Synchronous Step-Down Controllers Constant Frequency, Standby, 5V and 3.3V LDO LTC1708-PG Dual, 2 Phase Synchronous Controller with Mobile VID Control 36V Input; VOUT1 for CPU Core Voltage; VOUT2 for Memory, Chipset I/O LTC1709 2 Phase, 5-Bit Adustable, High Efficiency, Synchronous Step-Down Controller Constant Frequency, VID, up to 42A LTC1735 High Efficiency Synchronous Step-Down Switching Regulator Output Fault Protection, GN-16 LTC1736 High Efficiency Synchronous Controller with Mobile VID Control Output Fault Protection, G-24 LTC1772 SOT-23 Step-Down Controller 2.5V ≤ VIN ≤ 9.8V; IOUT Up to 4.5A; 550kHz Operation for Smallest PCB Area LTC1778 No RSENSE Wide Input Range Synchronous Step-Down Controller Up to 97% Efficiency; 4V ≤ VIN ≤ 36V 0.8V ≤ VOUT ≤ (0.9)(VIN); Input up to 20A LTC3713 Low Input Voltage Synchronous Step-Down Controller 1.5V ≤ VIN, No RSENSE, Standard 5V-Logic Level MOSFETs LTC3714 No RSENSE DC/DC Controller for Mobile Pentium Processors Supports up to 25A; Sense Resistor Optional LTC3716 2-Phase DC/DC Controller for Mobile Pentium Processors Small, Low Profile Design; Supports up to 30A LTC3728 Dual, 2-Phase 550kHz Synchronous Step-Down Controller Phase-Lockable from 250kHz to 550kHz, 5mm × 5mm QFN and SSOP-28, 3.5V ≤ VIN ≤ 36V Adaptive Power and No RSENSE are trademarks of Linear Technology Corporation. Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 q FAX: (408) 434-0507 q www.linear.com ©LINEAR TECHNOLOGY CORPORATION 2000 LT/TP 1002 1K REV A • PRINTED IN USA RELATED PARTS TYPICAL APPLICATION High Efficiency Triple 5V/ 3.3V/12V Power Supply 4.7 µF 10V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 + 33 µF 35V 10 µF 35V D1 M1 M2 M3 M4 D2 3.3V RUN/SS1 SENSE1+ SENSE1– VOSENSE1 FREQSET STBYMD FCB ITH1 SGND 3.3VOUT ITH2 VOSENSE2 SENSE2– SENSE2+ AUXSGND AUXVFB AUXSW AUXSW PGOOD TG1 SW1 BOOST1 VIN BG1 EXTVCC INTVCC PGND BG2 BOOST2 SW2 TG2 RUN/SS2 AUXSD AUXVIN AUXPGND AUXPGND LTC1876 L1 4.6 µH L2 4.6 µH 47 µF 6.3V SP 56 µF 4V SP VOUT1 3.3V 5A VOUT2 5V 5A 1876 TA03 RSENSE 0.008 Ω RSENSE 0.008 Ω SHUTDOWN VOUT3 12V 200mA 10 µF 20V D5 L3, 10 µH 0.1 µF 0.1 µF 1 µF 0.1 µF 0.01 µF 0.01 µF 0.1 µF 0.1 µF VPULL-UP (<7V) 100k D3 D4 10 Ω + 86.6k 10.2k 20k 1% 20k 1% 63.4k 1% 105k 1% 6.8k 6.8k 1000pF 1000pF 470pF 220pF 220pF 470pF M1, M2, M3, M4: FDS6912A L1, L2: SUMIDA CEP123-4R6 L3: TOKO A920CY-100M D1, D2: MBRM140T3 D3, D4: BAT54A D5: CMDSH-3 INTVCC VIN 5.2V TO 28V 4 3 2 1 4 3 2 1 |
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