LTC4020_15 Datasheet, PDF (38/42 Pages) Linear Technology – 55V Buck-Boost Multi-Chemistry Battery Charger

LTC4020
TYPICAL APPLICATIONS
15V to 55V to 6-cell Li-Ion PowerPath charger/system supply. 6A inductor current limit with 2.5A battery charge current limit.
Instant-on functionality for battery voltages below 20.4V, 24V charge termination voltage, and 26.4V maximum output voltage.
Status pins light LEDs for visible charge-state monitoring.
V_IN
15V TO 55V
0.1µF
4.7µF
×2
+
56µF
×2
SHDN
105k
10k
R_SENSEA
0.008
MBRS360
Si7960DP
XAL1010-153MEB
15µH
Si7960DP
R_SENSEB
0.008
Si7960DP
Si7960DP
4.7µF
×4
V_OUT
24V AT
3.5A MAX
56µF
×2
10µF
SBR0560S1
PGND
PV_IN
BG1
SW1
1µF
TG1
BST1
SGND
INTV_CC
BG2
SW2
TG2
LTC4020
BST2
SGND
VC
0.033µF
R_T, 100k
SENSGND
SENSBOT
SENSTOP
SENSVIN
RT
SHDN
V_{IN_REG}
MODE
ITH
V_FBMAX
I_LIMIT
CSOUT
CSP
CSN
BGATE
2.7k
STAT1
2.7k
STAT2
0.2µF _TIMER
BAT
V_FBMIN
FBG
VFB
NTC
RNG_SS
SGND_BACK
SBR0560S1
1µF _BZX84C6V2L
68pF
47k
680pF
56k
10nF
215k
100pF
24.9k
4.7Ω
100Ω
2.2µF
100Ω
1nF
24.9k
215k
R_SENSE
0.02Ω
Si7461DP
R_NTC
10k
6-CELL Li-ION (24V)
4020 TA03
38
For more information www.linear.com/LTC4020
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