LT1617 Просмотр технического описания (PDF) - Linear Technology
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LT1617 Datasheet PDF : 8 Pages
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LT1617/LT1617-1
ABSOLUTE AXI U RATI GS
(Note 1)
VIN, SHDN Voltage ................................................... 15V
SW Voltage .............................................................. 36V
NFB Voltage ............................................................. – 3V
Current into NFB Pin ............................................. –1mA
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
TOP VIEW
ORDER PART
NUMBER
SW 1
5 VIN
LT1617ES5
GND 2
LT1617ES5-1
NFB 3
4 SHDN
S5 PACKAGE
5-LEAD PLASTIC SOT-23
TJMAX = 125°C, θJA = 256°C/W
S5 PART MARKING
LTKF
LTKA
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 1.2V, VSHDN = 1.2V unless otherwise noted.
PARAMETER
CONDITIONS
Minimum Input Voltage
LT1617-1
LT1617
Quiescent Current
FB Comparator Trip Point
Not Switching
VSHDN = 0V
FB Comparator Hysteresis
Output Voltage Line Regulation
FB Pin Bias Current (Note 3)
Switch Off Time
1.2V < VIN < 12V
VNFB = –1.23V
Switch VCESAT
Switch Current Limit
ISW = 60mA (LT1617-1)
ISW = 300mA (LT1617)
LT1617-1
LT1617
SHDN Pin Current
SHDN Input Voltage High
VSHDN = 1.2V
VSHDN = 5V
SHDN Input Voltage Low
Switch Leakage Current
Switch Off, VSW = 5V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1617 and LT1617-1 are guaranteed to meet 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: Bias current flows out of the NFB pin.
MIN
q –1.205
q 1.3
75
300
0.9
TYP
20
– 1.23
8
0.05
2
400
85
250
100
350
2
8
0.01
MAX
1.0
1.2
30
1
– 1.255
0.1
2.7
120
350
125
400
3
12
0.25
5
UNITS
V
V
µA
µA
V
mV
%/V
µA
ns
mV
mV
mA
mA
µA
µA
V
V
µA
2
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