參數(shù)資料
型號(hào)： LT1103CY
英文描述： Current-Mode SMPS Controller
中文描述： 電流模式開(kāi)關(guān)電源控制器
文件頁(yè)數(shù)： 3/16頁(yè)
文件大?。?/td> 206K
代理商： LT1103CY
3
LT1107
1107fa
LT1107C
TYP
SYMBOL
I
Q
f
OSC
DC
PARAMETER
Quiescent Current
Oscillator Frequency
Duty Cycle
CONDITIONS
Switch OFF
MIN
MAX
450
88
78
70
13.5
12.0
0.7
0.65
1.5
UNITS
G
μ
A
kHz
%
%
μ
s
μ
s
%/V
G
50
62
50
8
6
63
69
60
11
9
0.2
0.5
1.1
Step-Up Mode
Step-Down Mode, V
IN
= 12V
Step-Up Mode
Step-Down Mode, V
IN
= 12V
2V
≤
V
IN
≤
5V
V
IN
= 3V, I
SW
= 650mA
V
IN
= 12V, I
SW
= 650mA
G
G
t
ON
Switch ON Time
G
G
Reference Line Regulation
Switch Saturation Voltage, Step-Up Mode
Switch Saturation Voltage, Step-Down Mode
G
V
SAT
G
G
V
V
ELECTRICAL C
temperature range, V
IN
= 3V, military or commercial version, T
A
= 25
°
C, unless otherwise noted.
HARA TERISTICS
The
G
denotes the specifications which apply over the full operating temperature range, V
IN
= 3V, –55
°
C
≤
T
A
≤
125
°
C, unless
otherwise noted.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
This specification guarantees that both the high and low trip points
of the comparator fall within the 1.2V to 1.3V range.
Note 3:
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 4:
100k resistor connected between a 5V source and the AO pin.
The
G
denotes the specifications which apply over the full operating
The
G
denotes the specifications which apply over the full operating temperature range, V
IN
= 3V, 0
°
C
≤
T
A
≤
70
°
C, unless otherwise
noted.
SYMBOL
PARAMETER
Feedback Pin Bias Current
Set Pin Bias Current
Gain Block Output Low
Reference Line Regulation
Gain Block Gain
Current Limit
Current Limit Temperature Coefficient
Switch OFF Leakage Current
Maximum Excursion Below GND
CONDITIONS
LT1107, V
FB
= 0V
V
SET
= V
REF
I
SINK
= 300
μ
A, V
SET
= 1V
5V
≤
V
IN
≤
30V
R
L
= 100k (Note 4)
220
to I
LIM
to V
IN
MIN
TYP
70
70
0.15
0.02
6000
400
–0.3
1
–400
MAX
120
300
0.4
0.075
UNITS
G
nA
nA
V
G
V
OL
G
G
%/V
V/V
mA
%/
°
C
μ
A
mV
A
V
G
1000
G
Measured at SW1 Pin, V
SW1
= 12V
I
SW1
≤
10
μ
A, Switch OFF
10
V
SW2
–350
LT1107M
TYP
SYMBOL
I
Q
f
OSC
DC
PARAMETER
Quiescent Current
Oscillator Frequency
Duty Cycle
CONDITIONS
Switch OFF
MIN
MAX
500
95
81
73
15
13
0.4
0.8
0.65
0.65
UNITS
G
μ
A
kHz
%
%
μ
s
μ
s
%/V
%/V
G
40
56
45
7
5
63
69
60
11
9
0.2
Step-Up Mode
Step-Down Mode, V
IN
= 12V
Step-Up Mode
Step-Down Mode, V
IN
= 12V
2V
≤
V
IN
≤
5V, 0
°
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, I
SW
= 500mA
0
°
C
≤
T
A
≤
125
°
C
T
A
= –55
°
C
G
G
t
ON
Switch ON Time
G
G
Reference Line Regulation
V
SAT
Switch Saturation Voltage, Step-Up Mode
0.5
0.5
V
V
Switch Saturation Voltage, Step-Down Mode
1.5
2.0
V
V
相關(guān)PDF資料
PDF描述
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