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LTC1479 Datasheet(PDF) 21 Page - Linear Technology |
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LTC1479 Datasheet(HTML) 21 Page - Linear Technology |
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21 / 24 page ![]() 21 LTC1479 TYPICAL APPLICATIONS N Dual NiMH Battery Power Management System (Using an LT1510, 1A Charger) 1479 TA02 DCIN BAT1 BAT2 + + V + SW VGG C3 1 µF 50V L1* 1mH C4 1 µF 50V VCC RSENSE 0.033 Ω SW A SW B SW C SW D SW E SW F GA GB GC GD GE GF SAB SCD SEF SENSE + SENSE – VCCP C2 2.2 µF 16V C1 0.1 µF VBAT POWER MANAGEMENT µP BDIV VBKUP DCDIV LTC1479 GG SG GH SH NiCD CELL 1812LS-105 XKBC, COILCRAFT CD43, SUMIDA CTX33-2, COILTRONICS * ** *** RB2 909k 1% RDC2 205k 1% 330 Ω RDC1 12.1k 1% RB1 121k 1% + LOBAT DCINGOOD TO INPUT OF DC/DC CONVERTER L2** 10 µH 3DM 5VCC FROM DC/DC VCC D1 MBR0530 BATSEL GND BATDIS DCIN/BAT CHGSEL DC INPUT (FROM AC ADAPTOR) VCC D2 MBRS140T R5 300 Ω C8 1 µF PROG RPROG 11k 1% R6 1k C9 0.1 µF VC SW BOOST SENSE BAT GND C7 0.22 µF D3 1N4148 L3*** 33 µH D4 MBRS140T LT1510 SW H Si9926DY C6 10 µF CERAMIC CCHG 22 µF TANT (CHARGER OUTPUT) Si4936DY Si4936DY (BOLD LINES INDICATE HIGH CURRENT PATHS) Si4936DY SW G Si9926DY Q1 2N7002 R2 390k 1% R3 100k 1% + + CBAT1 10 µF CBAT2 10 µF SMBUS BAT2 12-CELL NiMH BATTERY PACK BAT1 12-CELL NiMH BATTERY PACK R4 100k 1% CHGMON RTH1 RTH1 RTH1 RTH2 + + C5 0.1 µF C11 0.1 µF R1 22k 100k R7 470k 4 8 7 3 5 C10 0.1 µF 1 6 2 5VCC FROM DC/DC D5 BAS16LT1 Q2 2N7002 ROHM DTA144E RCM2 909k 1% RCM1 100k 1% R8 10k (BACKUP) 3 6 7 8 5 4 2 1 SW FB SHDN VIN GND ILIM LBI LBO LT1304 + CDCIN 10 µF 35V ALUM 0.1 µF |
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