LT1107 Linear Technology, LT1107 Datasheet - Page 3

• Manufacturer Part Number: LT1107
• Description: Micropower DC/DC Converter Adjustable and Fixed 5V/ 12V
• Manufacturer: Linear Technology

V
SYMBOL
A
V
V
SYMBOL
I
f
DC
t
V
V
SYMBOL
I
f
DC
t
V
The
temperature range.
Note 1: This specification guarantees that both the high and low trip points
of the comparator fall within the 1.2V to 1.3V range.
ELECTRICAL C
Q
OSC
ON
Q
OSC
ON
V
SW2
SAT
SAT
IN
IN
IN
= 3V, military or commercial version, T
= 3V, – 55 C T
= 3V, 0 C T
denotes specifications which apply over the full operating
PARAMETER
Gain Block Gain
Current Limit
Current Limit Temperature Coefficient
Switch OFF Leakage Current
Maximum Excursion Below GND
PARAMETER
Quiescent Current
Oscillator Frequency
Duty Cycle
Switch ON Time
Reference Line Regulation
Switch Saturation Voltage, Step-Up Mode
Switch Saturation Voltage, Step-Down Mode
PARAMETER
Quiescent Current
Oscillator Frequency
Duty Cycle
Switch ON Time
Reference Line Regulation
Switch Saturation Voltage, Step-Up Mode
Switch Saturation Voltage, Step-Down Mode
A
A
70 C, unless otherwise noted.
125 C, unless otherwise noted.
HARA TERISTICS
C
A
= 25 C, unless otherwise noted.
CONDITIONS
R
220 to I
Measured at SW1 Pin, V
I
CONDITIONS
Switch OFF
Step-Up Mode
Step-Down Mode, V
Step-Up Mode
Step-Down Mode, V
2V V
2.4V V
0 C T
T
V
CONDITIONS
Switch OFF
Step-Up Mode
Step-Down Mode, V
Step-Up Mode
Step-Down Mode, V
2V V
V
V
SW1
A
IN
IN
IN
L
= – 55 C, I
= 100k (Note 3)
0 C T
T
= 12V, I
= 3V, I
= 12V, I
A
= – 55 C
IN
IN
10 A, Switch OFF
A
IN
LIM
SW
5V, 0 C T
A
5V
125 C, I
SW
SW
5V, T
to V
SW
= 650mA
125 C
= 500mA
= 650mA
Note 2: The output voltage waveform will exhibit a sawtooth shape due to
the comparator hysteresis. The output voltage on the fixed-output versions
will always be within the specified range.
Note 3: 100k resistor connected between a 5V source and the AO pin.
= 400mA
IN
A
SW
IN
IN
IN
IN
= – 55 C
= 12V
= 12V
= 12V
= 12V
A
= 500mA
SW1
125 C
= 12V
1000
MIN
MIN
MIN
40
56
45
50
62
50
7
5
8
6
LT1107M
LT1107C
– 400
6000
– 0.3
TYP
400
TYP
TYP
0.2
0.5
0.5
0.2
0.5
1.1
63
69
60
11
63
69
60
11
1
9
9
– 350
MAX
MAX
MAX
0.65
0.65
13.5
12.0
0.65
500
450
0.4
0.8
1.5
2.0
0.7
1.5
10
95
81
73
15
13
88
78
70
LT1107
UNITS
UNITS
UNITS
%/ C
3
%/V
%/V
%/V
V/V
kHz
kHz
mA
mV
%
%
%
%
A
A
V
V
V
V
A
V
V
s
s
s
s