Datasheet

LTC4269-1
8
42691fc
V
FB
(V)
0.9
–70
I
VCMP
(µA)
–50
–30
–10
70
30
1
1.1
1.4
50
10
1.2
1.3
1.5
42691 G19
125°C
25°C
–40°C
TEMPERATURE (°C)
–50
I
VCMP
(µA)
60
65
70
25 75
42691 G20
55
50
–25 0
50 100 125
45
40
SOURCE CURRENT
V
FB
= 1.1V
SINK
CURRENT
V
FB
= 1.4V
TEMPERATURE (°C)
–50
900
g
m
(µmho)
950
1000
1050
1100
–25 0 25 50
42691 G21
75 100 125
TEMPERATURE (°C)
–50
A
V
(V/V)
1550
25
42691 G22
1400
1300
–25 0 50
1250
1200
1150
1100
1600
1650
1700
1500
1450
1350
75 100 125
TEMPERATURE (°C)
–50
UVLO (V)
1.240
1.245
1.250
25 75
42691 G23
1.235
1.230
–25 0
50 100 125
1.225
1.220
TEMPERATURE (°C)
–50
3.4
3.5
3.7
25 75
42691 G24
3.3
3.2
–25 0
50 100 125
3.1
3.0
3.6
I
UVLO
(µA)
TEMPERATURE (°C)
–50
SFST CHARGE CURRENT (µA)
23
25
42691 G25
20
18
–25 0 50
17
16
15
22
21
19
75 100 125
CAPACITANCE (nF)
0
TIME (ns)
80
70
60
50
40
30
20
10
0
8
42691 G26
246 107135 9
T
A
= 25°C
FALL TIME
RISE TIME
TEMPERATURE (°C)
–50 –25
19.0
V
CC
(V)
20.0
21.5
0
50
75
42691 G27
19.5
21.0
20.5
25
100
125
I
CC
= 10mA
TYPICAL PERFORMANCE CHARACTERISTICS
Feedback Amplifi er Output
Current vs V
FB
Feedback Amplifi er Source and
Sink Current vs Temperature
Feedback Amplifi er g
m
vs Temperature
Feedback Amplifi er Voltage Gain
vs Temperature UVLO vs Temperature I
UVLO
Hysteresis vs Temperature
Soft-Start Charge Current
vs Temperature
PG, SG Rise and Fall Times
vs Load Capacitance
V
CC
Clamp Voltage
vs Temperature