LT1072CSW 查看數據表（PDF） - Linear Technology
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LT1072CSW Datasheet PDF : 16 Pages
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LT1072
ABSOLUTE AXI U RATI GS
(Note 1)
Supply Voltage
LT1072HV (See Note 1) ......................................... 60V
LT1072 (See Note 1) ............................................. 40V
Switch Output Voltage
LT1072HV ............................................................. 75V
LT1072 .................................................................. 65V
LT1072S8 .............................................................. 60V
Feedback Pin Voltage (Transient, 1ms) ................. ±15V
Operating Junction Temperature Range
LT1072HVM, LT1072M (OBSOLETE) .... –55°C to 150°C
LT1072HVC, LT1072C (Oper.)* ............0°C to 100°C
LT1072HVC, LT1072C (Sh. Ckt.)* ........0°C to 125°C
LT1072HVI ....................................... –40°C to 125°C
Storage Temperature Range ............... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ............... 300°C
*Includes LT1072S8
UW U
PACKAGE/ORDER I FOR ATIO
Note 1: Minimum switch “on” time for the LT1072 in current limit is
≈ 0.7µsec. This limits the maximum input voltage during short-circuit
conditions, in the buck and inverting modes onlyt,o ≈ 40V. Normal
(unshorted) conditions are not affected. If the LT1072 is being operated in
the buck or inverting mode at high input voltages and short-circuit
conditions are expected, a resistor must be placed in series with the
inductor, as follows:
The value of the resistor is given by:
R
=
(t)
(f) (VIN)
I(LIMIT)
–
Vf
– RL
t = Minimum “on” time of LT1072 in current limit, ≈ 0.7µs
f = Operating frequency (40kHz)
Vf = Forward voltage of external catch diode at I(LIMIT)
I(LIMIT) = Current limit of LT1072 (2A)
RL = Internal series resistance of inductor
BOTTOM VIEW
VSW
12
43
VC
CASE IS
GND
VIN
FB
K PACKAGE
4-LEAD TO-3 METAL CAN
TJMAX = 150°C, θJC = 8°C/W, θJA = 35°C/W
TJMAX = 100°C*, θJC = 8°C/W, θJA = 35°C/W
ORDER PART
NUMBER
LT1072HVMK
LT1072MK
LT1072HVCK
LT1072CK
TOP VIEW
GND 1
VC 2
FB 3
NC 4
8 E2
7 VSW
6 E1
5 VIN
N PACKAGE
8-LEAD PDIP
TJMAX = 100°C, θJA = 130°C/W
TOP VIEW
GND 1
VC 2
FB 3
NC 4
8 E2
7 VSW
6 E1
5 VIN
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 100°C, θJA = 130°C/W
OBSOLETE PACKAGE
J PACKAGE
8-LEAD CERAMIC DIP
TJMAX = 150°C, θJA = 100°C/W
OBSOLETE PACKAGE
Consider the S8 or N8 Packages for Alternate Source
FRONT VIEW
ORDER PART
NUMBER
5
VIN
4
VSW
3
GND
2
FB
1
VC
T PACKAGE
5-LEAD TO-220
TJMAX = 100°C/W, θJC = 8°C/W, θJA = 50°C/W
LT1072CT
LT1072HVCT
LT1072HVIT
TOP VIEW
NC 1
NC 2
GND 3
VC 4
FB 5
NC 6
NC 7
NC 8
16 NC
15 NC
14 E2
13 VSW
12 E1
11 VIN
10 NC
9 NC
SW PACKAGE
16-LEAD PLASTIC SO WIDE
TJMAX = 100°C, θJC = 130°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
2
ORDER PART
NUMBER
LT1072CN8
LT1072CS8
S8 PART
MARKING
1072
LT1072MJ8
LT1072CJ8
ORDER PART
NUMBER
LT1072CSW
LT1072 • POI01
1072fc
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