Datasheet

4
LT1107
1107fa
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
Saturation Voltage, Step-Up Mode Switch ON Voltage, Step-Down
(SW2 Pin Grounded) Mode (SW1 Pin Connected to V
IN
) Maximum Switch Current vs R
LIM
Quiescent Current
Quiescent Current
TEMPERATURE (°C)
–55
FREQUENCY (kHz)
–15
25
45 125
1107 G07
–35 5
65
85
105
100
90
80
70
60
50
40
30
20
Oscillator Frequency
Switch ON Time
Step-Down Mode
TEMPERATURE (°C)
–55
SWITCH ON TIME (µs)
–15
25
45 125
1107 G10
–35 5
65
85
105
13
12
11
10
9
8
7
6
5
TEMPERATURE (°C)
–55
DUTY CYCLE (%)
–15
25
45 125
1107 G09
–35 5
65
85
105
85
80
75
70
65
60
55
50
45
Duty Cycle
Step-Up Mode
TEMPERATURE (°C)
–55
QUIESCENT CURRENT (µA)
–15
25
45 125
1107 G05
–35 5
65
85
105
400
350
300
250
200
150
100
TEMPERATURE (°C)
–55
SWITCH ON TIME (µs)
–15
25
45 125
1107 G08
–35 5
65
85
105
16
15
14
13
12
11
10
9
8
7
6
Switch ON Time
Step-Up Mode
INPUT VOLTAGE (V)
0
QUIESCENT CURRENT (µA)
400
380
360
340
320
300
280
260
240
220
200
24
1107 G06
6
12
18
30
3
9152127
T
A
= 25°C
R
LIM
(Ω)
SWITCH CURRENT (A)
10
1107 G03
100
1.5
1.4
1.3
1.2
1.1
0.9
0.8
1000
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1.0
STEP-DOWN
V
IN
= 12V
STEP-UP
2V ≤ V
IN
≤ 5V
SWITCH CURRENT (A)
0
SWITCH ON VOLTAGE (V)
0.6
1107 G02
0.2 0.4 0.8
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.1 0.3 0.5 0.7
SWITCH CURRENT (A)
0
SATURATION VOLTAGE (V)
1.2
1.0
0.8
0.6
0.4
0.2
0
0.2
0.4 0.6 0.8
1107 G01
1.0 1.2
V
IN
= 3V
V
IN
= 2V V
IN
= 5V