Datasheet
LTC4000-1
36
40001fa
For more information www.linear.com/LTC4001-1
Typical applicaTions
Figure 31. 18V to 72V
IN
to 4.2V at 2.0A Isolated Flyback Single-Cell Li-Ion Battery Charger
with 2.9h Timer Termination and 0.22A Trickle Charge Current
309k
115k
R
NTC
SINGLE-CELL
Li-Ion
BATTERY
PACK
NTHS0603
N02N1002J
V
SYS
4.4V, 2.5A
SiA923EDJ
115k
CSN
CSP
BGATE
IGATE
BAT
OFB
BFB
FBG
NTC
IFB
CX
LTC4000-1
IID
CLN
IN
VM
309k
RST
ITH
ENC
CHRG
F LT
CC
22.1k
CL TMR GND BIAS
22.1k
1µF
40001 F31
SiA923EDJ
25mΩ
100nF
IIMON
10nF
IBMON
10nF
10k
1µF
•
•
•
14.7k
1.5k13.6k
3.01k
BAS516
BAS516
MMBTA42
PDZ6.8B
6.8V
PDS1040
100nF
100k 150k
V
OUT
V
OUT
V
CC
0.04Ω
GATE
FDC2512
ISENSE
RUN
SSFLT
ITH
OCFBGNDSYNC
V
CC
V
IN
18V TO 72V
LTC3805-5
FS
150pF
68Ω
100µF
×3
0.1µF
75k
ISO1
PS2801-1-K
15.8k
221k
221k
1µF
681Ω
V
CC
2.2µF
×2
20mΩ
BAS516
10nF
TR1
PA1277NL
10M