LTC3305_15 Datasheet, PDF (25/28 Pages) Linear Technology – Lead-Acid Battery Balancer

LTC3305
Applications Information
10µF
25V
ALL NMOS DEVICES = SiR882DP
D1, D2, D3, D4 = CMMSH1-100
475Ω
1µF
6V
475k
V_REG
EN1
EN2
MODE
TERM1
TERM2
UVFLT
OVFLT
DONE
BAL
PTCFLT
BATX
BATY
CTON
CTOFF
CTBAT
10nF
V_L
27.4k
CM
CP
BOOST
V4
V3
V2
LTC3305
V1
9
NGATE1-9
NGATE1B-9B
D4
249Ω
10µF
25V
10µF
25V
1.33k
D3
10µF
25V
10µF
25V
10µF
NGATE6B
25V
NGATE7B
V_H
42.2k
I_SET
12.1k
AUXP
AUXN
GND
PTC
10µF
+
25V
AUX2 _6.04k
6.04k
6.04k
NGATE5B
6.04k
NGATE4B
3.01k
NGATE3B
6.04k
6.04k
NGATE2B
6.04k
NGATE8B
NGATE9B
NGATE1B
6.04k
+
BAT6
+
BAT5
+
BAT4
10µF
25V
1µF
6V
475k
10nF
27.4k
V_REG
EN1
EN2
MODE
TERM1
TERM2
UVFLT
OVFLT
DONE
BAL
PTCFLT
BATX
BATY
CTON
CTOFF
CTBAT
V_L
CM
CP
BOOST
V4
V3
V2
LTC3305
V1
9
NGATE1-9
NGATE1A-9A
D2
249Ω
10µF
25V
10µF
25V
1.33k
D1
10µF
25V
10µF
25V
10µF
NGATE6A
25V
NGATE7A
V_H
42.2k
I_SET
12.1k
AUXP
AUXN
GND
PTC
10µF
+
25V
AUX1 _6.04k
6.04k
6.04k
NGATE5A
6.04k
NGATE4A
3.01k
NGATE3A
6.04k
6.04k
NGATE2A
6.04k
NGATE8A
NGATE9A
NGATE1A
6.04k
+
BAT3
+
BAT2
+
BAT1
3305 F08
Figure 10. Two LTC3305 Devices Connected to Balance Six Lead-Acid Batteries with AND’d DONE Indicator
For more information www.linear.com/LTC3305
3305f
25