Datasheet

LTC6803-2/LTC6803-4
8
680324fa
TYPICAL PERFORMANCE CHARACTERISTICS
V
REF
Line Regulation
V
REG
Load Regulation
V
REF
Load Regulation
V
REF
Output Voltage
vs Temperature
V
REG
Line Regulation
Internal Discharge Resistance
vs Cell Voltage
Die Temperature Increase vs
Discharge Current in Internal FET Cell Conversion Time
TEMPERATURE (°C)
–50
V
REF
(V)
3.070
3.068
3.064
3.060
3.066
3.062
3.058
3.056
500 100
680324 G21
12525–25 75
5 REPRESENTATIVE UNITS
SOURCING CURRENT (µA)
0
V
REF
(V)
3.09
3.08
3.07
3.06
3.04
3.05
10 100
680324 G22
1000
T
A
= 85°C
T
A
= –40°C
T
A
= 25°C
SUPPLY VOLTAGE (V)
0
V
REF
(V)
3.074
3.072
3.070
3.068
3.066
3.064
3.062
3.060
20 4010 30 50
680324 G23
60
T
A
= 85°C
T
A
= –40°C
T
A
= 25°C
NO EXTERNAL LOAD ON V
REF
, CDC = 2
(CONTINUOUS CELL CONVERSIONS)
SUPPLY CURRENT (mA)
0
4.0
V
REG
(V)
4.2
4.4
4.6
4.8
5.2
2
4 6 8
680324 G24
10 12
5.0
T
A
= 125°C
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
V
+
= 43.2V
SUPPLY VOLTAGE (V)
0
4.0
V
REG
(V)
4.5
5.0
5.5
10 20 30 40
680324 G25
50
60
T
A
= 125°C
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
CDC = 2
CONTINUOUS CONVERSIONS
CELL VOLTAGE (V)
0
DISCHARGE RESISTANCE (Ω)
50
5
45
35
25
15
40
30
20
10
0
2.5 4.51.5 3.5
680324 G26
5.02.0 4.01.0 3.00.5
T
A
= 105°C
T
A
= 85°C
T
A
= 25°C
T
A
= –45°C
DISCHARGE CURRENT PER CELL (mA)
0
INCREASE IN DIE TEMPERATURE (°C)
50
5
45
35
25
15
40
30
20
10
0
40 8020 60
680324 G27
30 7010 50
1 CELL
DISCHARGING
6 CELLS
DISCHARGING
12 CELLS
DISCHARGING
ALL 12 CELLS AT 3.6V
V
S
= 43.2V
T
A
= 25°C
TEMPERATURE (°C)
–40
CONVERSION TIME (ms)
13.20
13.15
13.10
13.05
13.00
12.80
12.85
12.90
12.95
20–20 400 80 10060
680324 G28
120