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LT124XMJ8 Datasheet(PDF) 2 Page - Linear Technology

Part # LT124XMJ8
Description  High Speed Current Mode Pulse Width Modulators
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT124XMJ8 Datasheet(HTML) 2 Page - Linear Technology

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LT1241 Series
2
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Reference Section
Output Voltage
IO = 1mA, TJ = 25°C
4.925
5.000
5.075
V
Line Regulation
12V < VCC < 25V
q
320
mV
Load Regulation
1mA < IVREF < 20mA
q
–6
–25
mV
Temperature Stability
0.1
mV/
°C
Total Output Variation
Line, Load, Temp
q
4.87
5.13
V
Output Noise Voltage
10Hz < F < 10kHz, TJ = 25°C50
µV
Long Term Stability
TA = 125°C, 1000 Hrs.
5
25
mV
Output Short-Circuit Current
q
–30
– 90
–180
mA
Oscillator Section
Initial Accuracy
RT = 10k, CT = 3.3nF, TJ = 25°C
47.5
50
52.5
kHz
RT = 13.0k, CT = 500pF, TJ = 25°C
228
248
268
kHz
Voltage Stability
12V < VCC < 25V, TJ = 25°C1
%
Temperature Stability
TMIN < TJ < TMAX
– 0.05
%/
°C
Amplitude
TJ = 25°C (Pin 4)
1.7
V
Clock Ramp Reset Current
VOSC (Pin 4) = 2V, TJ = 25°C
7.9
8.2
8.5
mA
Error Amplifier Section
Feedback Pin Input Voltage
VPIN1 = 2.5V
q
2.42
2.50
2.58
V
Input Bias Current
VFB = 2.5V
q
–2
µA
Open-Loop Voltage Gain
2 < VO < 4V
q
65
90
dB
Unity-Gain Bandwidth
TJ = 25°C
0.7
1.3
2
MHz
Power Supply Rejection Ratio
12V < VCC < 25V
q
60
dB
Output Sink Current
VPIN2 = 2.7V, VPIN1 = 1.1V
q
26
mA
Output Source Current
VPIN2 = 2.3V, VPIN1 = 5V
q
– 0.5
– 0.75
mA
ELECTRICAL C
C
HARA TERISTICS (Notes 1, 2)
A
G
A
U
A
R
BSOLUTEXI
TI
S
Supply Voltage ........................................................ 25V
Output Current .......................................................
±1A*
Output Energy (Capacitive Load per Cycle) ...............5
µJ
Analog Inputs (Pins 2, 3) ............................... – 0.3 to 6V
Error Amplifier Output Sink Current...................... 10mA
Power Dissipation at TA ≤ 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
*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
PACKAGE/ORDER I FOR ATIO
COMP
FB
ISENSE
RT/CT
VREF
VCC
OUTPUT
GND
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
J8 PACKAGE
8-LEAD CERDIP
1
2
3
4
8
7
6
5
TOP VIEW
TJMAX = 125°C, θJA = 100°C/W (J8)
TJMAX = 100°C, θJA = 130°C/W (N8)
TJMAX = 100°C, θJA = 150°C/W (S8)


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