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| LT1082_1 Datasheet, PDF (2/12 Pages) Linear Integrated Systems – 1A High Voltage, Efficiency Switching Voltage Regulator | |||
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LT1082
ABSOLUTE AXI U RATI GS (Note 1)
Supply Voltage ....................................................... 75V
Switch Output Voltage .......................................... 100V
Feedback Pin Voltage (Transient, 1ms) ................ ±15V
Storage Temperature Range ................ â 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
Operating Junction Temperature Range
LT1082M (OBSOLETE) ............... â 55°C to 150°C
LT1082I ........................................... â 40°C to 125°C
LT1082C ............................................... 0°C to 100°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
GND 1
VC 2
FB 3
NC 4
8 E2
7 VSW
6 E1
5 VIN
N8 PACKAGE
8-LEAD PLASTIC DIP
TJMAX = 100°C, θJA = 90°C/W (CN8)
TJMAX = 125°C, θJA = 90°C/W (IN8)
ORDER PART NUMBER
LT1082CN8
LT1082IN8
J8 PACKAGE
8-LEAD CERAMIC DIP
TJMAX = 150°C, θJA = 100°C/W (MJ8)
LT1082MJ8
OBSOLETE PACKAGE
Consider the Q Package for Alternate Source
FRONT VIEW
5
4
3
2
1
Q PACKAGE
5-LEAD DD
VIN
VSW
GND
FB
VC
TJMAX = 100°C, θJA = 40°C/ W (CQ)
TJMAX = 125°C, θJA = 40°C/ W (IQ)
NOTE: θJA VARIES FROM 25°C/W TO 50°C/W
DEPENDING ON BOARD COMPOSITION.
ORDER PART NUMBER
LT1082CQ
LT1082IQ
Consult LTC Marketing for parts specified with wider operating temperature ranges.
FRONT VIEW
5
4
3
2
1
T PACKAGE
5-LEAD TO-220
VIN
VSW
GND
FB
VC
TJMAX = 100°C, θJA = 75°C/ W, θJC = 8°C/ W (CT)
TJMAX = 125°C, θJA = 75°C/ W, θJC = 8°C/ W (IT)
ORDER PART NUMBER
LT1082CT
LT1082IT
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VC = 0.5V, VFB = VREF, output pin open, unless otherwise
specified.
SYMBOL
VREF
IB
gm
AV
PARAMETER
Reference Voltage
Feedback Input Current
Error Amplifier
Transconductance
Error Amplifier Source or
Sink Current
Error Amplifier Clamp
Voltage
Reference Voltage Line Regulation
Error Amplifier Voltage Gain
Minimum Input Voltage
CONDITIONS
Measured at Feedback Pin
VC = 0.8V
VFB = VREF
âIC = ±25µA
VC = 1.5V
Hi Clamp, VFB = 1V
Lo Clamp, VFB = 1.5V
3V ⤠VIN ⤠VMAX, VC = 0.8V
0.9V ⤠VC ⤠1.4V
MIN TYP MAX UNITS
1.224 1.244 1.264
V
q 1.214 1.244 1.274
V
350 750
nA
q
1100
nA
3000 4400 6000
q 2400
7000
µmho
µmho
150 200 400
µA
q
120
400
µA
1.8
2.3
V
0.12 0.22 0.36
V
q
0.03
%/V
350 650
V/V
q
2.6 3.0
V
sn1082 1082fas
2
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