Datasheet

LTC4253B
7
4253bf
Typical perForMance characTerisTics
∆I
TMRACC
/∆I
DRN
vs Temperature
SQTIMER Threshold
vs Temperature V
DRNL
vs Temperature
V
DRNCL
vs Temperature I
DRN
vs V
DRAIN
V
PGL
vs Temperature
I
TMR
(Initial Cycle, Sourcing)
vs Temperature
I
TMR
(Circuit Breaker, Sourcing)
vs Temperature I
TMR
vs I
DRN
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
I
TMR
(µA)
4253b G19
10
9
8
7
6
5
4
3
2
1
0
I
IN
= 2mA
V
TMR
= 2V
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
∆I
TMRACC
/∆I
DRN
(µA/µA)
4253b G22
9.0
8.8
8.6
8.4
8.2
8.0
7.8
7.6
7.4
7.2
7.0
I
IN
= 2mA
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
DRNCL
(V)
4253b G25
8.0
7.8
7.6
7.4
7.2
7.0
6.8
6.6
6.4
6.2
6.0
I
IN
= 2mA
I
DRN
= 50µA
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
I
TMR
(µA)
4253b G20
240
230
220
210
200
190
180
170
160
I
IN
= 2mA
I
DRN
= 0µA
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
SQTMR
(V)
4253b G23
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
I
IN
= 2mA
V
SQTMRH
V
SQTMRL
V
DRAIN
(V)
0
2 4 6 8 10 12 14 16
I
DRN
(mA)
4253b G26
100
10
1
0.1
0.01
0.001
0.0001
0.00001
I
IN
= 2mA
T
A
= –40°C
T
A
= 25°C
T
A
= 85°C
T
A
= 125°C
I
DRN
(mA)
0.001
0.01 0.1 1 10
I
TMR
(mA)
4253b G21
10
1
0.1
I
IN
= 2mA
T
A
= 25°C
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
DRNL
(V)
4253b G24
2.60
2.55
2.50
2.45
2.40
2.35
2.30
2.25
2.20
I
IN
= 2mA
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
PGL
(V)
4253b G27
3.0
2.5
2.0
1.5
1.0
0.5
0
I
IN
= 2mA
I
PG
= 10mA
I
PG
= 5mA
I
PG
= 1.6mA