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| LT1082 Datasheet, PDF (2/12 Pages) Linear Technology – 1A High Voltage, Efficiency Switching Voltage Regulator | |||
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LT1082
ABSOLUTE AXI U RATI GS
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 ......................................... 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
J8 PACKAGE
N8 PACKAGE
8-LEAD CERAMIC DIP 8-LEAD PLASTIC DIP
TJMAX = 150°C, θJA = 100°C/W (MJ8)
TJMAX = 100°C, θJA = 90°C/W (CN8)
TJMAX = 125°C, θJA = 90°C/W (IN8)
ORDER PART NUMBER
LT1082MJ8
LT1082CN8
LT1082IN8
FRONT VIEW
5
VIN
4
VSW
3
GND
2
FB
1
VC
Q PACKAGE
5-LEAD DD
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
FRONT VIEW
5
VIN
4
VSW
3
GND
2
FB
1
VC
T PACKAGE
5-LEAD TO-220
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 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
µmho
q 2400
7000
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
2
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