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參數(shù)資料
| 型號(hào)： | LT1111MJ8-5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
| 中文描述： | 1.5 A SWITCHING REGULATOR, 88 kHz SWITCHING FREQ-MAX, CDIP8 |
| 封裝： | 0.300 INCH, HERMETIC, CERDIP-8 |
| 文件頁(yè)數(shù)： | 3/16頁(yè) |
| 文件大小： | 337K |
| 代理商： | LT1111MJ8-5 |
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3
LT1111
ELECTRICAL C
HARA TERISTICS
V
IN
= 3V, Military or Commercial Version
SYMBOL
PARAMETER
Reference Line Regulation
CONDITIONS
5V
≤
V
IN
≤
30V
2V
≤
V
IN
≤
5V
R
L
= 100k (Note 3)
220
from I
LIM
to V
IN
MIN
TYP
0.02
0.20
6000
400
–0.3
1
–400
MAX
0.075
0.400
UNITS
%/V
%/V
V/V
mA
%/
°
C
G
A
V
I
LIM
Gain Block Gain
Current Limit
Current Limit Temperature Coefficient
Switch OFF Leakage Current
Maximum Excursion Below GND
G
1000
G
Measured at SW1 Pin, V
SW1
= 12V
I
SW1
≤
10
μ
A, Switch OFF
10
μ
A
mV
–350
LT1111M
TYP
300
72
50
SYMBOL
I
Q
f
OSC
DC
PARAMETER
Quiescent Current
Oscillator Frequency
Duty Cycle: Step-Up Mode
Step-Down Mode
Switch ON Time: Step-Up Mode
Step-Down Mode
Reference Line Regulation
CONDITIONS
Switch OFF
MIN
MAX
500
100
62
55
11
9
0.4
0.8
0.65
UNITS
G
μ
A
kHz
%
%
μ
s
μ
s
%/V
%/V
G
45
40
20
5
3
Full Load
G
G
t
ON
I
LIM
Tied to V
IN
V
OUT
= 5V, V
IN
= 12V
2V
≤
V
IN
≤
5V, 25
°
C
≤
T
A
≤
125
°
C
2.4V
≤
V
IN
≤
5V, T
A
= –55
°
C
0
°
C
≤
T
A
≤
125
°
C, I
SW
= 500mA,
T
A
= –55
°
C, I
SW
= 400mA
V
IN
= 12V, 0
°
C
≤
T
A
≤
125
°
C
I
SW
= 500mA T
A
= –55
°
C
G
G
7
0.2
V
SAT
SW Saturation Voltage, Step-Up Mode
0.5
V
SW Saturation Voltage, Step-Down Mode
1.5
2.0
V
V
V
IN
= 3V, –55
°
C
≤
T
A
≤
125
°
C unless otherwise noted.
LT1111C
TYP
SYMBOL
I
Q
f
OSC
DC
PARAMETER
Quiescent Current
Oscillator Frequency
Duty Cycle: Step-Up Mode
Step-Down Mode
Switch ON Time: Step-Up Mode
CONDITIONS
Switch OFF
MIN
300
54
43
24
5.0
3.3
MAX
450
95
59
50
9.0
7.8
0.7
0.65
1.50
UNITS
G
μ
A
kH
%
%
μ
s
μ
s
G
72
50
34
7
5
0.2
0.5
1.1
Full Load
G
G
t
ON
I
LIM
Tied to V
IN
V
OUT
= 5V, V
IN
= 12V
2V
≤
V
IN
≤
5V
V
IN
= 3V, I
SW
= 650mA
V
IN
= 12V, I
SW
= 650mA
G
G
Step-Down Mode
Reference Line Regulation
SW Saturation Voltage, Step-Up Mode
SW Saturation Voltage, Step-Down Mode
G
%/V
V
SAT
G
G
V
V
V
IN
= 3V, 0
°
C
≤
T
A
≤
70
°
C unless otherwise noted.
The
G
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 1.20V to 1.30V 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 A0 pin.
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