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LT1110 Datasheet(PDF) 3 Page - Linear Technology

Part No. LT1110
Description  Micropower DC-DC Converter Adjustable and Fixed 5V, 12V
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LT1110 Datasheet(HTML) 3 Page - Linear Technology

 
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LT1110
3
VCESAT
Switch Saturation Voltage
VIN = 1.5V, ISW = 400mA
300
400
mV
Step-Up Mode
q
600
mV
VIN = 1.5V, ISW = 500mA
400
550
mV
q
750
mV
VIN = 5V, ISW = 1A
700
1000
mV
AV
A2 Error Amp Gain
RL = 100kΩ (Note 3)
q
1000
5000
V/V
IREV
Reverse Battery Current
(Note 4)
750
mA
ILIM
Current Limit
220
Ω Between ILIM and VIN
400
mA
Current Limit Temperature
– 0.3
%/
°C
Coefficient
ILEAK
Switch OFF Leakage Current
Measured at SW1 Pin
1
10
µA
VSW2
Maximum Excursion Below GND
ISW1 ≤ 10µA, Switch Off
– 400
– 350
mV
ELECTRICAL C
C
HARA TERISTICS T
A = 25°C, VIN = 1.5V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Note 3: 100k
Ω resistor connected between a 5V source and the AO pin.
Note 4: The LT1110 is guaranteed to withstand continuous application of
+1.6V applied to the GND and SW2 pins while VIN, ILIM, and SW1 pins are
grounded.
The q denotes the specifications which apply over the full operating
temperature range.
Note 1: This specification guarantees that both the high and low trip point
of the comparator fall within the 210mV to 230mV range.
Note 2: This specification guarantees that the output voltage of the fixed
versions will always fall within the specified range. The waveform at the
sense pin will exhibit a sawtooth shape due to the comparator hysteresis.
CC
HARA TERISTICS
A
TYPICALPERFOR
CE
Oscillator Frequency
Oscillator Frequency
Switch On Time
INPUT VOLTAGE (V)
0
64
66
70
72
74
78
80
36
912
LT1110 • TPC02
15 18 21
62
60
24 27 30
68
76
TEMPERATURE (
°C)
–50
–25
0
25
LT1110 • TPC03
50
75
100
14
13
12
11
10
9
8
7
TEMPERATURE (
°C)
–50
40
50
60
70
80
90
100
–25
0
25
50
LT1110 • TPC01
75
100


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