LTC4000
40
4000fb
For more information www.linear.com/LTC4000
LINEAR TECHNOLOGY CORPORATION 2011
LT 0613 REV B • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC4000
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LTC3789 High Efficiency, Synchronous, 4 Switch Buck-Boost Controller Improved LTC3780 with More Features
LT3845 High Voltage Synchronous Current Mode Step-Down Controller with
Adjustable Operating Frequency
For Medium/High Power, High Efficiency Supplies
LT3650 High Voltage 2A Monolithic Li-Ion Battery Charger 3mm × 3mm DFN-12 and MSOP-12 Packages
LT3651 High Voltage 4A Monolithic Li-Ion Battery Charger 4A Synchronous Version of LT3650 Family
LT3652/LT3652HV Power Tracking 2A Battery Chargers Multi-Chemistry, Onboard Termination
LTC4009 High Efficiency, Multi-Chemistry Battery Charger Low Cost Version of LTC4008, 4mm × 4mm QFN-20
LTC4012 High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control Similar to LTC4009 Adding PowerPath Control
LT3741 High Power, Constant Current, Constant Voltage, Step-Down Controller Thermally Enhanced 4mm × 4mm QFN and 20-Pin TSSOP
Figure 28. 6V to 36V
IN
to 14.4V at 4.5A Buck Boost Converter 4-Cell LiFePO
4
Battery Charger
with 2.9h Timer Termination and 0.45A Trickle Charge Current
1.37M
14.7k
26.7k
10k
R
NTC
4-CELL
LiFePO
4
PACK
NTHS0603
N02N1002J
Q2: SiR422DP
Q3: SiR496DP
Q4: SiR4840BDY
Q5: SiR496DP
100nF
10mΩ
309k
V
OUT
15V, 5A
V
IN
6V TO 36V
12.5A MAX
Si7135DP
118k
CSN
CSP
BGATE
IGATE
BAT
OFB
FBG
BFB
NTC
LTC4000
ITH CC IID
154k
BZT52C5V6
4mΩ
0.01Ω
LTC3789
EXTV
CC
V
FB
0.22µF
INTV
CC
INTV
CC
BOOST2BOOST1
TG2SW2
MODE/PLLIN
PGOOD
ITHRUN
SS SGND PGND1
FREQ
RST
CLN
IN
ENC
CHRG
F LT
VM
IIMON
IBMON
1µF
BZX84C3VO
365k
100k
V
OUTSNS
I
OSENSE
–
I
OSENSE
+
SENSE
–
SENSE
+
8.06k
100k
10nF
10µF
10µF
DFLS160
B240A
DFLS160
10nF
10nF
4000 F28
270µF
3.3µF
×5
330µF
×2
22µF
×2
V
IN
V
INSNS
1µF
ILIM
121k
Si7135DP
BG2BG1SW1TG1
Q5 Q3Q2 Q4
B240A
22.1k
0.1µF
18.2k
1µF
CXCLIL TMR GND BIAS
0.01µF
0.22µF
1.24k
0.01Ω
1.24k
10k
5.6Ω
390pF
IHLP6767GZ
ER4R7M01
4.7µH
3.6Ω
1800pF
10nF
10M
1nF
