Datasheet

LT3650-8.2/LT3650-8.4
5
36508284fd
V
BAT
(V)
0
–0.4
I
BAT
(mA)
0.0
0.4
0.8
2.2
1.6
1
2
2.5
2.0
1.2
–0.2
0.2
0.6
1.0
1.8
1.4
0.5 1.5
3
3.5
8
8.5
365082 G11
LT3650-8.2
SWITCH CURRENT (A)
0
I
SW
/I
BOOST
18
24
30
36
1.6
12
6
0
21
27
33
15
9
3
0.4
0.8
1.2
0.2 1.8
0.6
1.0
1.4
2.0
365082 G04
TEMPERATURE (°C)
–50
320
SWITCH FORWARD DROP (mV)
340
360
380
480
420
0
50
75
365082 G05
440
460
400
–25
25
100
125
I
SW
= 2A
Switch Drive (I
SW
/I
BOOST
)
vs Switch Current
Switch Forward Drop (V
IN
– V
SW
)
vs Temperature
TEMPERATURE (°C)
–50
99.0
V
SENSE
–
V
BAT
(mV)
99.2
99.6
99.8
100.0
101.0
100.4
0
50
75
365082 G09
99.4
100.6
100.8
100.2
–25
25
100
125
V
BAT
= 7.5V
TEMPERATURE (°C)
–50
8
V
SENSE
–
V
BAT
(mV)
9
10
11
12
0
50
75
365082 G07
–25
25
100
125
TEMPERATURE (°C)
0
V
SENSE
– V
BAT
(mV)
40
80
20
60
100
120
45 65 85 105 125
35 13525 55 75 95 115
365082 G10
Typical perForMance characTerisTics
I
MAX
Current Limit (V
SENSE
– V
BAT
)
vs Temperature
C/10 Threshold vs Temperature
(V
SENSE
– V
BAT
)
CC/CV Charging; SENSE Pin Bias
Current vs V
SENSE
Thermal Foldback – I
MAX
Current Limit (V
SENSE
– V
BAT
)
vs Temperature
TEMPERATURE (°C)
–50
49.0
V
CLP
–
V
IN
(mV)
49.2
49.6
49.8
50.0
51.0
50.4
0
50
75
365082 G08
49.4
50.6
50.8
50.2
–25
25
100
125
CLP Input Limit Threshold
(V
CLP
– V
IN
) vs Temperature
I
CHG
at 50%
CC/CV Charging; BAT Pin Bias
Current vs V
BAT
V
SENSE
(V)
0
–350
I
SENSE
(µA)
–250
–150
–50
100
1
2
2.5
50
–300
–200
–100
0
0.5 1.5
5.5
6
8
8.5
365082 G06
LT3650-8.2
T
A
= 25°C, unless otherwise noted.
V
BAT
(V)
0
BATTERY CURRENT (µA)
4
9
10
2 4 6
2
7
3
8
1
0
6
5
1 3 8 95 7
365082 G12
V
IN
= 20V, V
SHDN
= 0V
V
IN
FLOATING
Battery Bias Current with Charger
Disabled (I
BAT
+ I
SENSE
+ I
BOOST
+ I
SW
)