LT1241 Ver la hoja de datos (PDF) - Linear Technology
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LT1241 Datasheet PDF : 16 Pages
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LT1241 Series
ABSOLUTE AXI U RATI GS
Supply Voltage ........................................................ 25V
Output Current ....................................................... ±1A*
Output Energy (Capacitive Load per Cycle) ...............5µJ
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.
PACKAGE/ORDER I FOR ATIO
COMP 1
FB 2
ISENSE 3
RT/CT 4
TOP VIEW
8 VREF
7 VCC
6 OUTPUT
5 GND
J8 PACKAGE
N8 PACKAGE
8-LEAD CERDIP 8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 100°C/W (J8)
TJMAX = 100°C, θJA = 130°C/W (N8)
TJMAX = 100°C, θJA = 150°C/W (S8)
ORDER PART
NUMBER
LT124XCJ8
LT124XCN8
LT124XCS8
LT124XIN8
LT124XIS8
LT124XMJ8
S8 PART MARKING
124X
124XI
ELECTRICAL CHARACTERISTICS (Notes 1, 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
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
CONDITIONS
IO = 1mA, TJ = 25°C
12V < VCC < 25V
q
1mA < IVREF < 20mA
q
Line, Load, Temp
q
10Hz < F < 10kHz, TJ = 25°C
TA = 125°C, 1000 Hrs.
q
RT = 10k, CT = 3.3nF, TJ = 25°C
RT = 13.0k, CT = 500pF, TJ = 25°C
12V < VCC < 25V, TJ = 25°C
TMIN < TJ < TMAX
TJ = 25°C (Pin 4)
VOSC (Pin 4) = 2V, TJ = 25°C
VPIN1 = 2.5V
q
VFB = 2.5V
q
2 < VO < 4V
q
TJ = 25°C
12V < VCC < 25V
q
VPIN2 = 2.7V, VPIN1 = 1.1V
q
VPIN2 = 2.3V, VPIN1 = 5V
q
2
MIN
4.925
4.87
– 30
47.5
228
7.9
2.42
65
0.7
60
2
– 0.5
TYP
5.000
3
–6
0.1
50
5
– 90
50
248
– 0.05
1.7
8.2
2.50
90
1.3
6
– 0.75
MAX
5.075
20
– 25
5.13
25
– 180
52.5
268
1
8.5
2.58
–2
2
UNITS
V
mV
mV
mV/°C
V
µV
mV
mA
kHz
kHz
%
%/°C
V
mA
V
µA
dB
MHz
dB
mA
mA
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