LTC3300-1 Datasheet, PDF (8/44 Pages) Linear Technology – High Effciency Bidirectional Multicell Battery Balancer

LTC3300-1
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C unless otherwise specified.
V_RTONP, V_RTONS
vs External Resistance
1.236
T_A = 25°C
1.224
1.212
WDT Pin Current vs Temperature
85
R_TONS = 15k
80
BALANCING
WDT = 0.5V
WDT Pin Current vs R_TONS
240
T_A = 25°C
200
160
1.200
1.188
1.176
V_RTONS
V_RTONP
1.164
1
10
100
R_TONP, R_TONS RESISTANCE (kΩ)
33001 G10
75
SECONDARY OV
WDT = 2V
70
65
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
33001 G11
120
BALANCING
WDT = 0.5V
80
40 _{SECONDARY OV}
WDT = 2V
0
5 10 15 20 25 30 35 40 45
R_TONS (kΩ)
33001 G12
Peak Current Sense Threshold
vs Temperature
55
V_CELL = 3.6V
RANDOM CELL SELECTED
53
PRIMARY
51
49
SECONDARY
Zero Current Sense Threshold
vs Temperature
5.0
V_CELL = 3.6V
RANDOM CELL SELECTED
2.5
PRIMARY
0
–2.5
–5.0
SECONDARY
Primary Winding Switch Maximum
On-Time vs Temperature
8.4
R_TONP = 20k
V_CELL = 3.6V
8.0
7.6
7.2
6.8
47
–7.5
6.4
45
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
33001 G13
Secondary Winding Switch
Maximum On-Time vs Temperature
1.4
R_TONS = 15k
1.3
1.2
1.1
1.0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
33001 G16
–10.0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
33001 G14
Maximum On-Time
vs R_TONP, R_TONS
20
T_A = 25°C
18
16
14
12
PRIMARY
10
8
6
4
SECONDARY
2
0
5 10 15 20 25 30 35
R_TONP, R_TONS (kΩ)
40 45
33001 G17
6.0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
33001 G15
Watchdog Timer Timeout Period
vs Temperature
1.65
1.60
1.55
1.50
1.45
1.40
1.35
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
33001 G18
33001f
8
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