Datasheet

4
LT3473/LT3473A
3473f
Sleep Mode Quiescent Current
Sleep Mode Quiescent Current
(Not Switching)
SHDN Pin Current
TEMPERATURE (°C)
–50
90
SLEEP MODE QUIESCENT CURRENT (µA)
95
100
105
050
3473 G04
100
SHDN = 3V
V
IN
= 3V
INPUT VOLTAGE, V
IN
(V)
0
SLEEP MODE QUIESCENT CURRENT (µA)
96
98
100
12
3473 G5
94
92
48
214
610 16
90
88
102
SHDN = 3V
SHDN = 1.5V
TEMPERATURE (°C)
–50
SHDN PIN CURRENT (µA)
1.0
1.5
3473 G06
0.5
0
0
50
100
2.5
2.0
SHDN = 3V
V
IN
= 3V
Switch V
CE(SAT)
Switch Saturation Voltage Schottky I-V Characteristic
SWITCH CURRENT (mA)
0
0
SWITCH SATURATION VOLTAGE (mV)
50
150
200
250
800
450
3473 G07
100
400
200
1000
600 1200
300
350
400
TEMPERATURE (°C)
–50
SWITCH SATURATION VOLTAGE (mV)
45
46
47
3473 G08
44
43
42
050
48
49
50
I
SW
= 100mA
100
SCHOTTKY FORWARD DROP (mV)
0
SCHOTTKY FORWARD CURRENT (mA)
600
800
1000
800
3473 G09
400
200
500
700
900
300
100
0
200
400
600
1000
Schottky Forward Voltage
Output Disconnect Voltage Drop
Switching Frequency
TEMPERATURE (°C)
–50
SCHOTTKY FORWARD VOLTAGE (mV)
400
450
3473 G10
350
300
0
50
100
550
500
I
D
= 100mA
COLLECTOR CURRENT (mA)
0
250
300
400
350
90°C
25°C
–45°C
80
3473 G11
200
150
20 40 60 100
100
50
0
VOLTAGE DROP (mV)
INPUT VOLTAGE, V
IN
(V)
0
SWITCHING FREQUENCY (MHz)
0.4
0.6
0.8
3473 G12
0.2
0
510
1.0
1.2
1.4
15
TYPICAL PERFOR A CE CHARACTERISTICS
UW
T
A
= 25°C unless otherwise noted.