Datasheet

LTC3300-1
9
33001fb
For more information www.linear.com/LTC3300-1
Balance Current vs Cell Voltage
Protection for Broken Connection
to Cell While Charging
Protection for Broken Connection
to Secondary Stack While
Discharging
Typical Charge Waveforms Typical Discharge Waveforms
Changing Balancer Direction
“On the Fly”
CSBO Digital Output Current High
vs Temperature
CSBO Digital Output Current Low
vs Temperature
Balancer Efficiency
vs Cell Voltage
TEMPERATURE (°C)
–50
2.00
I
OH1
(µA)
2.25
2.50
2.75
3.00
–25 0 25 50
33001 G19
75 100 125 150
TOS = V
–
TEMPERATURE (°C)
–50
I
OL1
(µA)
1300
1400
1500
25 75 150
33001 G20
1200
1100
1000
–25 0
50
100 125
TOS = V
–
VOLTAGE PER CELL (V)
2.8
89
CHARGE TRANSFER EFFICIENCY (%)
90
91
92
93
3.0 3.2 3.4 3.6
33001 G21
3.8 4.0 4.2
DC2064A DEMO BOARD
I
CHARGE
= I
DISCHARGE
= 2.5A
FOR 12-CELL STACK ONLY
DISCHARGE, 12-CELL STACK
DISCHARGE, 6-CELL STACK
CHARGE, 6-CELL STACK
CHARGE, 12-CELL STACK
VOLTAGE PER CELL (V)
2.8
BALANCE CURRENT (A)
2.5
2.6
2.7
3.4 3.8
33001 G22
2.4
2.3
3.0 3.2
3.6 4.0 4.2
2.2
2.1
DC2064A DEMO BOARD
I
CHARGE
= I
DISCHARGE
= 2.5A
FOR 12-CELL STACK ONLY
CHARGE, 12-CELL STACK
CHARGE, 6-CELL STACK
DISCHARGE, 12-CELL STACK
DISCHARGE, 6-CELL STACK
I1S
50mV/DIV
I1P
50mV/DIV
SECONDARY
DRAIN
50V/DIV
PRIMARY
DRAIN
50V/DIV
2µs/DIV
DC2064A DEMO BOARD
I
CHARGE
= 2.5A
T = 2
S = 12
33001 G23
I1P
50mV/DIV
I1S
50mV/DIV
SECONDARY
DRAIN
50V/DIV
PRIMARY
DRAIN
50V/DIV
2µs/DIV
DC2064A DEMO BOARD
I
DISCHARGE
= 2.5A
T = 2
S = 12
33001 G24
C1 PIN
1V/DIV
G1P
2V/DIV
50µs/DIV
33001 G25
3.6V
~5.2V
CONNECTION TO
C1 BROKEN
BALANCING
SHUTS OFF
SECONDARY
STACK VOLTAGE
10V/DIV
G1P
2V/DIV
500µs/DIV
33001 G26
43.2V
~66V
CONNECTION TO
STACK BROKEN
BALANCING
SHUTS OFF
SCKI
5V/DIV
I1P
50mV/DIV
G1P
2V/DIV
20µs/DIV
33001 G27
2ms
CHARGING
DISCHARGING
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C unless otherwise specified.