LT3437 LINER [Linear Technology], LT3437 Datasheet - Page 4

• Manufacturer Part Number: LT3437
• Description: High Voltage 500mA, 200kHz Step-Down Switching Regulator with 100uA Quiescent Current
• Manufacturer: LINER [Linear Technology]

LT3437
TYPICAL PERFOR A CE CHARACTERISTICS
4
1.10
1.50
1.45
1.40
1.35
1.30
1.25
1.20
1.15
400
700
600
500
300
200
100
100
90
80
70
60
50
40
30
20
10
0
0
–50
–50
0.1
Input Current vs Temperature
Efficiency and Power Loss
vs Load Current
SHDN Threshold
V
V
T
EFFICIENCY
SLEEP MODE V
IN
OUT
A
SLEEP MODE V
–25
= 25°C
–25
= 12V
= 3.3V
RUN MODE
1
POWER LOSS
LOAD CURRENT (mA)
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
BIAS
BIAS
25
25
10
= 0V
= 5V
50
50
75
75
100
W
100
100
3437 G01
3437 G07
3437 G04
U
1000
125
125
500
450
400
350
300
250
200
150
100
50
0
400
900
800
700
600
500
300
200
100
10
8
6
4
2
0
0
–50
1.30
1.28
1.26
1.24
1.22
1.20
SHDN Pin Current
0
Bias Current vs Temperature
–50
FB Voltage vs Temperature
–25
10
SLEEP MODE
RUN MODE
–25
0
TEMPERATURE (°C)
20
0
TEMPERATURE (°C)
V
25
SHDN
25
30
50
(V)
50
40
75
75
100
50
3437 G08
3437 G05
100
125
3437 G02
60
125
700
600
500
400
300
200
100
250
240
230
220
210
200
190
180
170
160
150
800
10
9
8
7
6
5
4
3
2
1
0
0
–50
–50
–50
Oscillator Frequency
vs Temperature
Switch Peak Current Limit
vs Temperature
Shutdown Supply Current
vs Temperature
–25
–25
–25
0
–0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
V
VIN
50
50
= 12V
50
V
VIN
75
75
75
V
= 60V
VIN
= 80V
100
100
100
3437 G06
3437 G03
3437 G09
3437f
125
125
125