LT1930 데이터 시트보기 (PDF) - Linear Technology
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LT1930 Datasheet PDF : 12 Pages
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LT1930/LT1930A
ABSOLUTE AXI U RATI GS
(Note 1)
VIN Voltage .............................................................. 16V
SW Voltage ................................................– 0.4V to 36V
FB Voltage .............................................................. 2.5V
Current Into FB Pin .............................................. ±1mA
SHDN Voltage ......................................................... 10V
Maximum Junction Temperature ......................... 125°C
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
SW 1
GND 2
FB 3
TOP VIEW
5 VIN
4 SHDN
S5 PACKAGE
5-LEAD PLASTIC SOT-23
TJMAX = 125°C, θJA = 256°C/ W
ORDER PART
NUMBER
LT1930ES5
LT1930AES5
S5 PART MARKING
LTKS
LTSQ
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
VIN = 3V, VSHDN = VIN unless otherwise noted. (Note 2)
PARAMETER
CONDITIONS
LT1930
MIN TYP MAX
LT1930A
MIN TYP MAX
UNITS
Minimum Operating Voltage
2.45
2.6
2.45
2.6
V
Maximum Operating Voltage
16
16
V
Feedback Voltage
1.240 1.255 1.270 1.240 1.255 1.270
V
q 1.230
1.280 1.230
1.280
V
FB Pin Bias Current
VFB = 1.255V
q
120 360
240 720
nA
Quiescent Current
VSHDN = 2.4V, Not Switching
4.2
6
5.5
8
mA
Quiescent Current in Shutdown
VSHDN = 0V, VIN = 3V
0.01
1
0.01
1
µA
Reference Line Regulation
2.6V ≤ VIN ≤ 16V
0.01 0.05
0.01 0.05
%/V
Switching Frequency
1
1.2
1.4
1.8
2.2
2.6
MHz
q 0.85
1.6
1.6
2.9
MHz
Maximum Duty Cycle
q 84
90
75
90
%
Switch Current Limit
(Note 3)
1
1.2
2
1
1.2
2.5
A
Switch VCESAT
Switch Leakage Current
SHDN Input Voltage High
ISW = 1A
VSW = 5V
400 600
400 600
mV
0.01
1
0.01
1
µA
2.4
2.4
V
SHDN Input Voltage Low
0.5
0.5
V
SHDN Pin Bias Current
VSHDN = 3V
VSHDN = 0V
16
32
0
0.1
35
70
µA
0
0.1
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1930E/LT1930AE are guaranteed to meet performance
specifications from 0°C to 70°C. Specifications over the – 40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: Current limit guaranteed by design and/or correlation to static test.
2
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