LT1312 查看數據表（PDF） - Linear Technology
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LT1312 Datasheet PDF : 12 Pages
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LT1312
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ........................................................ 22V
Digital Input Voltage ........................ 7V to (GND – 0.3V)
Sense Input Voltage ......................... 7V to (GND – 0.3V)
Valid Output Voltage ...................... 15V to (GND – 0.3V)
Output Short-Circuit Duration .......................... Indefinite
Operating Temperature ................................ 0°C to 70°C
Junction Temperature................................ 0°C to 125°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
GND 1
ENO 2
EN1 3
VALID 4
8 VPPOUT
7 N.C.
6 VS
5 SENSE
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 150°C/ W
ORDER PART
NUMBER
LT1312CS8
S8 PART MARKING
1312
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS VS = 13V to 20V, TA = 25°C, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
VPPOUT Output Voltage
ILKG
Output Leakage
IS
Supply Current
Program to 12V, IOUT ≤ 120mA (Note 1)
Program to 5V, IOUT ≤ 30mA (Note 1)
Program to 3.3V, IOUT ≤ 30mA (Note 1)
Program to 0V, IOUT = – 300µA
Program to Hi-Z, 0V ≤ VPPOUT ≤ 12V
Program to 0V
Program to Hi-Z
Program to 12V, No Load
Program to 5V, No Load
Program to 3.3V, No Load
Program to 12V, IOUT = 120mA
Program to 5V, IOUT = 30mA
Program to 3.3V, IOUT = 30mA
q
11.52 12.00 12.48
V
q
4.75 5.00 5.25
V
q
3.135 3.30 3.465
V
0.42 0.60
V
q
– 10
10
µA
q
30
50
µA
q
30
50
µA
q
230 360
µA
q
75 120
µA
q
55
90
µA
q
126 132
mA
q
31
33
mA
q
31
33
mA
ILIM
Current Limit
VENH
Enable Input High Voltage
VENL
Enable Input Low Voltage
Program to 3.3V, 5V or 12V
330 500
mA
q
2.4
V
q
0.4
V
IENH
IENL
VSEN5
Enable Input High Current
Enable Input Low Current
VCC Sense Threshold
2.4V ≤ VIN ≤ 5.5V
0V ≤ VIN ≤ 0.4V
VPPOUT = 3.3V to 5V
20
50
µA
0.01
1
µA
q
3.60 4.05 4.50
V
VSEN3
ISEN
VCC Sense Threshold
VCC Sense Input Current
VPPOUT = 5V to 3.3V
VSENSE = 5V
VSENSE = 3.3V
q
3.60 4.00 4.50
V
38
60
µA
18
30
µA
VVALID TH
IVALID
VPP VALID Threshold Voltage
VPP VALID Output Drive Current
VPP VALID Output Leakage Current
Program to 12V
Program to 12V, VVALID = 0.4V
Program to 0V, VVALID = 12V
q
10.5
11 11.5
V
1
3.3
mA
0.1
10
µA
The q denotes the specifications which apply over the full operating Note 1: For junction temperatures greater than 110°C, a minimum load
temperature range.
of 1mA is recommended.
2
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