LT1304 查看數據表（PDF） - Linear Technology
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LT1304 Datasheet PDF : 16 Pages
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LT1304/LT1304-3.3/LT1304-5
ABSOLUTE MAXIMUM RATINGS
VIN Voltage ................................................................ 8V
SW Voltage ............................................... – 0.4V to 25V
FB Voltage (LT1304) ...................................... VIN + 0.3V
Sense Voltage (LT1304-3.3/LT1304-5) ..................... 8V
ILIM Voltage .............................................................. 5V
SHDN Voltage ............................................................ 6V
LBI Voltage ............................................................... VIN
LBO Voltage ............................................................... 8V
Maximum Power Dissipation ............................. 500mW
Junction Temperature.......................................... 125°C
Operating Temperature Range ..................... 0°C to 70°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
LBI 1
LBO 2
VIN 3
SW 4
8 FB (SENSE)*
7 SHDN
6 ILIM
5 GND
S8 PACKAGE
8-LEAD PLASTIC SO
*FIXED OUTPUT VERSION
TJMAX = 125°C, θJA = 150°C/W
ORDER PART
NUMBER
LT1304CS8
LT1304CS8-3.3
LT1304CS8-5
S8 PART MARKING
1304
13043
13045
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS VIN = 2V, VSHDN = 2V unless otherwise noted.
PARAMETER
Minimum Operating Voltage
Operating Voltage Range
Quiescent Current
Quiescent Current in Shutdown
Comparator Trip Point
FB Pin Bias Current
Sense Pin Leakage in Shutdown
Output Sense Voltage
Line Regulation
LBI Input Threshold
LBI Bias Current
LBI Input Hysteresis
LBO Output Voltage Low
LBO Output Leakage Current
SHDN Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
Switch OFF Time
Switch ON Time
Maximum Duty Cycle
Peak Switch Current
CONDITIONS
VSHDN = 2V, Not Switching
VSHDN = 0V, VIN = 2V
VSHDN = 0V, VIN = 5V
LT1304
LT1304
VSHDN = 0V, Fixed Output Versions
LT1304-3.3
LT1304-5
1.8V ≤ VIN ≤ 8V
Falling Edge
ISINK = 500µA
LBI = 1.5V, LBO = 5V
VSHDN = 5V
VSHDN = 0V
Current Limit Not Asserted
Current Limit Not Asserted
ILIM Pin Open, VIN = 5V
20k from ILIM to GND
MIN TYP MAX
q
1.5
1.65
q
8
q
120 200
q
7
15
q
27
50
q 1.22 1.24 1.26
q
10
25
q
0.002
1
q 3.17
3.3
3.43
q 4.80 5.05 5.25
q
0.04 0.15
q 1.10 1.17 1.25
q
6
20
q
35
65
q
0.2
0.4
q
0.01
0.1
q 1.4
q
0.4
q
5
8
q –5
–2
q
1
1.5
2
q
4
6
8
q 76
80
88
0.8
1
1.2
500
UNITS
V
V
µA
µA
µA
V
nA
µA
V
V
%/ V
V
nA
mV
V
µA
V
V
µA
µA
µs
µs
%
A
mA
2
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