lt3470a Linear Technology Corporation, lt3470a Datasheet - Page 4

• Manufacturer Part Number: lt3470a
• Description: Micropower Buck Regulator With Integrated Boost And Catch Diodes
• Manufacturer: Linear Technology Corporation

LT3470A
TYPICAL PERFORMANCE CHARACTERISTICS
4
90
80
70
60
50
40
30
0.1
Effi ciency, V
L = TOKO D52LC 47μH
T
A
= 25°C
LOAD CURRENT (mA)
1
V
IN
OUT
300
600
550
500
450
400
350
250
200
= 12V
30
25
15
10
20
0
5
–50
–50
= 3.3V
BIAS Quiescent Current
(Bias > 3V) vs Temperature
Top and Bottom Switch Current
Limits (V
V
10
IN
–25
–25
= 24V
V
0
0
FB
IN
TEMPERATURE (°C)
TEMPERATURE (°C)
V
IN
100
= 36V
= 0V) vs Temperature
= 7V
3470a G01
25
25
50
50
75
75
90
80
70
60
50
40
30
100
100
0.1
Effi ciency, V
3470a G04
3470a G06
L = TOKO D52LC 47μH
T
A
= 25°C
125
125
1
LOAD CURRENT (mA)
OUT
= 5V
V
IN
10
= 24V
30
50
40
20
10
6
5
4
2
9
8
7
3
1
0
0
–50
V
–50
IN
V
vs Temperature
SHDN Bias Current
vs Temperature
IN
= 12V
V
–25
IN
Quiescent Current
–25
100
= 36V
3470a G02
T
A
BIAS < 3V
BIAS > 3V
0
= 25°C unless otherwise noted.
0
V
TEMPERATURE (°C)
TEMPERATURE (°C)
V
SHDN
SHDN
25
25
= 36V
= 2.5V
1.245
1.260
1.255
1.250
1.240
50
50
–50
V
75
FB
75
–25
vs Temperature
100
100
3470a G07
3470a G05
0
TEMPERATURE (°C)
125
125
25
50
75
100
3470a G03
3470af
125