參數(shù)資料
型號: LT1241 Series
廠商: Linear Technology Corporation
英文描述: High Speed Current Mode Pulse Width Modulators(高速,電流模式脈寬調(diào)制器)
中文描述: 高速電流模式脈寬調(diào)制器(高速,電流模式脈寬調(diào)制器)
文件頁數(shù): 2/16頁
文件大?。?/td> 284K
代理商: LT1241 SERIES
LT1241 Series
2
PARAMETER
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
Total Output Variation
Output Noise Voltage
Long Term Stability
Output Short-Circuit Current
Oscillator Section
Initial Accuracy
CONDITIONS
MIN
TYP
MAX
UNITS
I
O
= 1mA, T
J
= 25
°
C
12V < V
CC
< 25V
1mA < I
VREF
< 20mA
4.925
5.000
3
–6
0.1
5.075
20
–25
V
G
mV
mV
G
mV/
°
C
Line, Load, Temp
10Hz < F < 10kHz, T
J
= 25
°
C
T
A
= 125
°
C, 1000 Hrs.
G
4.87
5.13
V
50
5
–90
μ
V
mV
mA
25
G
–30
–180
R
T
= 10k, C
T
= 3.3nF, T
J
= 25
°
C
R
T
= 13.0k, C
T
= 500pF, T
J
= 25
°
C
12V < V
CC
< 25V, T
J
= 25
°
C
T
MIN
< T
J
< T
MAX
T
J
= 25
°
C (Pin 4)
V
OSC
(Pin 4) = 2V, T
J
= 25
°
C
47.5
228
50
248
52.5
268
1
kHz
kHz
%
%/
°
C
Voltage Stability
Temperature Stability
Amplitude
Clock Ramp Reset Current
Error Amplifier Section
Feedback Pin Input Voltage
Input Bias Current
Open-Loop Voltage Gain
Unity-Gain Bandwidth
Power Supply Rejection Ratio
Output Sink Current
Output Source Current
–0.05
1.7
8.2
V
7.9
8.5
mA
V
PIN1
= 2.5V
V
FB
= 2.5V
2 < V
O
< 4V
T
J
= 25
°
C
12V < V
CC
< 25V
V
PIN2
= 2.7V, V
PIN1
= 1.1V
V
PIN2
= 2.3V, V
PIN1
= 5V
G
2.42
2.50
2.58
–2
V
G
μ
A
dB
G
65
0.7
60
2
–0.5
90
1.3
2
MHz
dB
mA
mA
G
G
6
G
–0.75
ELECTRICAL C
HARA TERISTICS
(Notes 1, 2)
A
Supply Voltage ........................................................ 25V
Output Current.......................................................
±
1A*
Output Energy (Capacitive Load per Cycle)...............5
μ
J
Analog Inputs (Pins 2, 3)...............................–0.3 to 6V
Error Amplifier Output Sink Current...................... 10mA
Power Dissipation at T
A
25
°
C................................ 1W
Operating Junction Temperature Range
LT124XC .............................................0
°
C to 100
°
C
LT124XI......................................... –40
°
C to 100
°
C
LT124XM........................................ –55
°
C to 125
°
C
Storage Temperature Range.................– 65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
U
G
W
A
W
U
W
A
R
BSOLUTE
XI
TI
S
*The 1A rating for output current is based on transient switching
requirements.
ORDER PART
NUMBER
LT124XCJ8
LT124XCN8
LT124XCS8
LT124XIN8
LT124XIS8
LT124XMJ8
S8 PART MARKING
124X
124XI
U
PACKAGE/ORDER U
COMP
FB
I
SENSE
R
T
/C
T
V
REF
V
CC
OUTPUT
GND
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PA
8-LEAD PDIP
J8 PACKAGE
8-LEAD CERDIP
1
2
3
4
8
7
6
5
TOP VIEW
T
JMAX
= 125
°
C,
θ
JA
= 100
°
C/W (J8)
T
JMAX
= 100
°
C,
θ
JA
= 130
°
C/W (N8)
T
JMAX
= 100
°
C,
θ
JA
= 150
°
C/W (S8)
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