Datasheet

5
LTC4221
4221fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
V
SENSE(ACL)
vs V
FB
I
GATE(UP)
vs Temperature I
GATE(DN)
vs Temperature
I
GATE(FSTDN)
vs Temperature
ΔV
GATE n
(V
GATE n
– V
CC1
) vs V
CC1
V
FB
(V)
0
V
SENSE(ACL)
(mV)
20
25
30
0.3 0.5
4221 G10
15
10
0.1 0.2
0.4 0.6 0.7
5
0
V
CC1
= 5V
V
CC2
= 3.3V
T
A
= 25°C
TEMPERATURE (°C)
–50
I
GATE(UP)
(μA)
–8
–7
–6
25 75
4221 G11
–9
–10
–25 0
50 100 125
–11
–12
V
CC1
= 2.7V
V
CC1
= 5V
V
CC1
= 13.5V
V
CC2
= 1V
V
GATE
= 0V
TEMPERATURE (°C)
–50
101
102
104
25 75
4221 G12
100
99
–25 0
50 100 125
98
97
103
I
GATE(DN)
(μA)
V
CC1
= 2.7V
V
CC1
= 5V
V
CC1
= 13.5V
V
CC2
= 1V
V
GATE
= 3.3V
TEMPERATURE (°C)
–50
I
GATE(FSTDN)
(mA)
40
50
60
25 75
4221 G13
30
20
–25 0
50 100 125
10
0
V
CC1
= 2.7V
V
CC1
= 5V
V
CC1
= 13.5V
V
CC2
= 1V
V
GATE
= 3.3V
V
CC1
(V)
0
6
V
GATE
n
(V)
7
9
10
11
8
15
4221 G14
8
4
2
10 12
614
12
13
14
V
CC2
= V
CC1
– 1.5V
T
A
= 25°C
ΔV
GATE1
ΔV
GATE2
ΔV
GATE1
(V
GATE1
– V
CC1
)
vs Temperature
TEMPERATURE (°C)
–50
12
14
18
25 75
4221 G15
10
8
–25 0
50 100 125
6
4
16
ΔV
GATE1
(V)
V
CC1
= 2.7V, V
CC2
= 1V
V
CC1
= 5V, V
CC2
= 3.3V
V
CC1
= 13.5V, V
CC2
= 13.5V
V
SENSE(FC)
vs Temperature
V
SENSE(SC)
vs V
CC1
V
SENSE(SC)
vs Temperature
TEMPERATURE (°C)
–50
V
SENSE(FC)
(mV)
101.0
101.5
102.0
25 75
4221 G07
100.5
100.0
–25 0
50 100 125
99.5
99.0
V
CC1
= 5V
V
CC2
= 3.3V
V
CC1
(V)
0
V
SENSE(SC)
(mV)
25.0
25.2
25.4
12
4221 G08
24.8
24.6
48
214
610 16
24.4
24.2
25.6
V
CC2
= V
CC1
T
A
= 25°C
TEMPERATURE (°C)
–50
V
SENSE(SC)
(mV)
25.8
25
4221 G09
25.2
24.8
–25 0 50
24.6
24.4
26.0
25.6
25.4
25.0
75 100 125
V
CC1
= 5V
V
CC2
= 3.3V