Datasheet

LT1110
4
I
SWITCH
(A)
ON VOLTAGE (V)
0 0.2 0.4 0.6
LT1110 • TPC07
0.8 1.0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
IN
= 12V
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
Saturation Voltage
Duty Cycle Switch Saturation Voltage Step-Up Mode
Switch On Voltage Minimum/Maximum Frequency vs
Step-Down Mode On Time Quiescent Current
Maximum Switch Current vs Maximum Switch Current vs
Quiescent Current R
LIM
Step-Up R
LIM
Step-Down
TEMPERATURE (°C)
DUTY CYCLE (%)
–50 –25 0 25
LT1110 • TPC04
50 75 100
78
76
74
72
70
68
66
64
62
60
58
TEMPERATURE (°C)
V
CESAT
(mV)
–50 – 25 0 25
LT1110 • TPC05
50 75 100
500
450
400
350
300
250
200
150
100
50
0
V
IN
= 1.5V
I
SW
= 500mA
I (A)
0
0
V (V)
0.2
0.4
0.6
1.2
1.4
0.2 0.4 0.8 1.2
LT1110 • TPC06
1.0
1.4 1.6
SWITCH
CESAT
V
IN
= 1.0V
V = 1.2V
IN
V
IN
= 1.5V
V
IN
= 5.0V
V = 2.0V
IN
0.6 1.0
0.8
V
IN
= 3.0V
INPUT VOLTAGE (V)
QUIESCENT CURRENT (µA)
0
LT1110 • TPC09
3
400
380
360
340
320
280
260
6
240
220
200
300
912151821242730
TEMPERATURE (°C)
QUIESCENT CURRENT (µA)
–50
LT1110 • TPC10
500
450
400
350
250
–25
150
100
200
300
0 25 50 75 100
R
LIM
(Ω)
SWITCH CURRENT (A)
10
LT1110 • TPC11
100
1.5
1.3
1.1
0.9
1000
0.7
0.5
0.3
0.1
STEP-UP MODE
V
IN
≤ 5V
R
LIM
(Ω)
SWITCH CURRENT (A)
10
LT1110 • TPC12
100
1.5
1.3
1.1
0.9
1000
0.7
0.5
0.3
0.1
STEP-DOWN MODE
V
IN
= 12V
SWITCH ON TIME (µs)
OSCILLATOR FREQUENCY (KHz)

7
9
LT1110 • TPC08
10
100
90
80
70
60
50
40
13
0°C ≤ T
A
≤ 70°C
8
11
12
95
85
75
65
55
45