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