Datasheet

LT3692
5
3692fa
For more information www.linear.com/3692
Typical perForMance characTerisTics
Shutdown Threshold and Minimum
Input Voltage vs Temperature
V
IN
Overvoltage Threshold
vs Temperature
Shutdown Quiescent Current
vs Temperature
FB Voltage and CH1-CH2 FB
Offset vs Temperature
Shutdown Pin Input Current
vs Temperature
TEMPERATURE (°C)
–50
VOLTAGE (V)
2.0
2.5
3.0
25 50 75 100 125
3692 G01
1.5
1.0
–25 0
150
0.5
0
3.5
MINIMUM
INPUT VOLTAGE
SHUTDOWN
THRESHOLD VOLTAGE
TEMPERATURE (°C)
–50
0
CURRENT (µA)
5
15
20
25
50
35
0
50
75
3692 G02
10
40
45
30
–25 25
100
125
150
V
IN
= 15V
V
SHDN
= 15V
V
IN
= 15V
V
SHDN
= 1.3V
TEMPERATURE (°C)
–50
VOLTAGE (V)
38.0
39.0
150
3692 G03
37.0
36.5
36.0
35.0
0
50
100
–25
25
75
125
40.0
37.5
38.5
35.5
39.5
T
J
Output Voltage vs Temperature
Error Amplifier Transconductance
vs Temperature
Soft-Start-to-Feedback Offset
vs Temperature
V
IN1
Quiescent Current
vs SHDN1 Voltage
VOLTAGE (V)
0
0
I
Q
(µA)
2000
1000
3000
5000
4000
0.4 0.8
1.2
3692 G04
6000
–50°C
25°C
125°C
150°C
0.2 0.6
1
1.4
TEMPERATURE (°C)
–50
0
CURRENT (µA)
2
1
3
5
4
7
6
0 50
100
150
3692 G05
9
8
10
I
Q1
I
Q2
–25 25
75
125
V
SHDN1
= V
SHDN2
= 0V
TEMPERATURE (°C)
–50
800
FEEDBACK VOLTAGE (V)
OFFSET VOLTAGE (mV)
820
815
810
805
0
50
75
3692 G06
–8
–4
–6
8
4
0
–2
6
2
–25 25
100
CH1
CH2
125
150
OFFSET
TEMPERATURE (°C)
–50
VOLTAGE (V)
0.50
1.00
150
3692 G07
0
–0.50
0
50
100
–25
25
75
125
1.50
0.25
0.75
–0.25
1.25
R
TJ
= 30k
TO GND
R
TJ
= 30k TO –1V
TEMPERATURE (°C)
–50
TRANSCONDUCTANCE (µMho)
385
415
420
425
10
50 70
90
3692 G08
375
405
395
380
410
370
400
390
–30 –10
30
130110
150
TEMPERATURE (°C)
–50
VOLTAGE (mV)
0
2
150
3692 G09
–2
–4
0
50
100
–25
25
75
125
4
–1
1
–3
3
V
SS
= 0.4V