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LTC1840IGN 数据表(PDF) 12 Page - Linear Technology |
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LTC1840IGN 数据表(HTML) 12 Page - Linear Technology |
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12 / 12 page  LTC1840 12 1840f 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 2001 LT/TP 0402 2K • PRINTED IN USA RELATED PARTS TYPICAL APPLICATIO PART NUMBER DESCRIPTION COMMENTS LTC1625 No RSENSE TM Current Mode Synchronous Step-Down Up to 97% Efficiency; 1.19V ≤ VIN ≤ 36V; Switching Regulator 1.19V ≤ VOUT ≤ VIN; Up to 99% Duty Cycle LTC1695 SMBus/I2C Fan Speed Controller in ThinSOT TM 0.75 Ω PMOS Linear Regulator with 180mA Output Current Rating LTC1694/LTC1694-1 SMBus Accelerator Includes DC and AC Pull-Up Current/AC Pull-Up Current Only LTC1771 Ultralow Supply Current Step-Down DC/DC Controller 10 µA Supply Current; 93% Efficiency; 1.23V ≤ VOUT ≤ 18V; 2.8V ≤ VIN ≤ 20V; Up to 100% Duty Cycle LTC4300-1 Hot Swappable 2-Wire Bus Buffer Prevents SDA, SCL Corruption During Live Insertion; Bidirectional Bus Buffer; Isolates Backplane and Card Capacitance No RSENSE and ThinSOT are trademarks of Linear Technology Corporation. 16 15 14 13 12 11 10 9 16 15 14 13 12 11 10 9 16 15 14 13 12 11 10 9 LTC1840 1 2 3 4 5 6 7 8 EXTVCC SYNC RUN/SS FCB ITH SGND VOSENSE VPROG VIN TK SW TG B00ST INTVCC BG PGND 1 2 3 4 5 6 7 8 10k 10k 130 Ω LED1 NC NC TO AUTOMATICALLY MUX TACHB BETWEEN THE TWO PARALLEL FANS, SET GPIO2 TO BLINK ADDRESS = 1110010 (8 OTHERS POSSIBLE) L1 = SUMIDA CDRH125-15OMC CIN, COUT, = PANASONIC EEV-FC1C471P R1, R2 = 1% METAL FILM LTC1625 + + + CIN1 470 µF CIN2 470 µF 4.7k + CC1 470pF CF1 100pF CC2 220pF CB, 0.22 µF 10k CVCC 4.7 µF CVIN 0.1 µF Si4410DY Si4410DY L1 15 µH MBRS140T3 + R1 75k R2 27k COUT1 470 µF ×2 3.3V 3.3V 3.3V 3.3V SCL SDA A1 A0 FAULT GPIO1 GPIO2 GND VCC IDACOUTA IDACOUTB BLAST TACHB TACHA GPIO4 GPIO3 DC FAN DC FAN 1840 TA03 CMDSH-3 SYSTEM RESET LTC1840 TACH OUT TACH OUT BYS10-25 EXTVCC SYNC RUN/SS FCB ITH SGND VOSENSE VPROG VIN TK SW TG B00ST INTVCC BG PGND 1 2 3 4 5 6 7 8 LTC1625 + + CIN1B 470 µF CIN2B 470 µF 4.7k + CC1B 470pF CF1B 100pF CC2B 220pF CBB, 0.22 µF 10k CVCCB 4.7 µF CVINB 0.1 µF Si4410DY Si4410DY L1B 15 µH MBRS140T3 + R1B 75k R2B 27k COUT1B 470 µF ×2 DC FAN DC FAN CMDSH-3 TACH OUT TACH OUT 10k 10k 10k IN4148 10k 12V 2- NMB 5910PL-04W-B59-D50 FANS 2.1A NOM AT 12V 2- NMB 5920PL-04W-B29-D50 FANS 2.2A NOM AT 12V (4.5V TO 12V) (4.5V TO 12V) TP0101TS TN0205A SDA SCL FAULT -A- -A- 0.1 µF 10 µF Controlling Fan Pair with Automatic Blast Redundancy and Fan Pair with Automatic Tach Muxing |
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