LT1107(Rev0) Просмотр технического описания (PDF) - Linear Technology
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LT1107 Datasheet PDF : 12 Pages
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LT1107
ELECTRICAL CHARACTERISTICS
VIN = 3V, military or commercial version, TA = 25°C, unless otherwise noted.
SYMBOL
AV
VSW2
PARAMETER
Gain Block Gain
Current Limit
Current Limit Temperature Coefficient
Switch OFF Leakage Current
Maximum Excursion Below GND
CONDITIONS
RL = 100k (Note 3)
220Ω to ILIM to VIN
Measured at SW1 Pin, VSW1 = 12V
ISW1 ≤ 10µA, Switch OFF
MIN TYP MAX
q 1000 6000
400
q
– 0.3
1
10
– 400 – 350
UNITS
V/ V
mA
%/°C
µA
mV
VIN = 3V, – 55°C ≤ TA ≤ 125°C, unless otherwise noted.
SYMBOL
IQ
fOSC
DC
PARAMETER
Quiescent Current
Oscillator Frequency
Duty Cycle
tON
Switch ON Time
Reference Line Regulation
VSAT
Switch Saturation Voltage, Step-Up Mode
Switch Saturation Voltage, Step-Down Mode
CONDITIONS
Switch OFF
Step-Up Mode
Step-Down Mode, VIN = 12V
Step-Up Mode
Step-Down Mode, VIN = 12V
2V ≤ VIN ≤ 5V, 0°C ≤ TA ≤ 125°C
2.4V ≤ VIN ≤ 5V, TA = – 55°C
0°C ≤ TA ≤ 125°C, ISW = 500mA
TA = – 55°C, ISW = 400mA
VIN = 12V, ISW = 500mA
0°C ≤ TA ≤ 125°C
TA = – 55°C
LT1107M
MIN TYP MAX
q
500
q
40
63
95
q
56
69
81
q
45
60
73
q
7
11
15
q
5
9
13
0.2 0.4
0.8
0.5 0.65
0.5 0.65
1.5
2.0
UNITS
µA
kHz
%
%
µs
µs
%/ V
%/ V
V
V
V
V
VIN = 3V, 0°C ≤ TA ≤ 70°C, unless otherwise noted.
SYMBOL
IQ
fOSC
DC
PARAMETER
Quiescent Current
Oscillator Frequency
Duty Cycle
tON
Switch ON Time
Reference Line Regulation
VSAT
Switch Saturation Voltage, Step-Up Mode
Switch Saturation Voltage, Step-Down Mode
CONDITIONS
Switch OFF
Step-Up Mode
Step-Down Mode, VIN = 12V
Step-Up Mode
Step-Down Mode, VIN = 12V
2V ≤ VIN ≤ 5V
VIN = 3V, ISW = 650mA
VIN = 12V, ISW = 650mA
LT1107C
MIN TYP MAX
q
450
q
50
63
88
q
62
69
78
q
50
60
70
q
8
11 13.5
q
6
9 12.0
q
0.2 0.7
q
0.5 0.65
q
1.1 1.5
UNITS
µA
kHz
%
%
µs
µs
%/V
V
V
The q denotes specifications which apply over the full operating
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.
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.
3
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