LT1614 Просмотр технического описания (PDF) - Linear Technology
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LT1614 Datasheet PDF : 16 Pages
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LT1614
ABSOLUTE AXI U RATI GS (Note 1)
VIN, SHDN, LBO Voltage ......................................... 12V
SW Voltage ............................................... – 0.4V to 30V
NFB Voltage ............................................................ – 3V
VC Voltage ................................................................ 2V
LBI Voltage ............................................ 0V ≤ VLBI ≤ 1V
Current into FB Pin .............................................. ±1mA
Junction Temperature ...........................................125°C
Operating Temperature Range
LT1614C ................................................. 0°C to 70°C
LT1614I ............................................. – 40°C to 85°C
Extended Commercial
Temperature Range (Note 2) .................. – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
NFB 1
VC 2
SHDN 3
GND 4
8 LBO
7 LBI
6 VIN
5 SW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 160°C/W
ORDER PART
NUMBER
LT1614CMS8
LT1614IMS8
MS8 PART MARKING
LTID
LTJB
TOP VIEW
NFB 1
VC 2
SHDN 3
GND 4
8 LBO
7 LBI
6 VIN
5 SW
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 120°C/W
Consult factory for Military grade parts.
ORDER PART
NUMBER
LT1614CS8
LT1614IS8
S8 PART MARKING
1614
1614I
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. Commercial Grade 0°C to 70°C. VIN = 1.5V, VSHDN = VIN unless
otherwise noted.
PARAMETER
Quiescent Current
Feedback Voltage
NFB Pin Bias Current (Note 3)
Reference Line Regulation
Minimum Input Voltage
Maximum Input Voltage
Error Amp Transconductance
Error Amp Voltage Gain
Switching Frequency
Maximum Duty Cycle
Switch Current Limit (Note 4)
CONDITIONS
VSHDN = 0V
VNFB = –1.24V
1V ≤ VIN ≤ 2V
2V ≤ VIN ≤ 6V
∆I = 5µA
MIN
q – 1.21
q – 2.5
q
q 500
73
q 70
0.75
TYP
1
5
– 1.24
– 4.5
0.6
0.3
0.92
16
100
600
80
80
1.2
MAX
2
10
– 1.27
–7
1.1
0.8
1
6
750
UNITS
mA
µA
V
µA
%/V
%/V
V
V
µmhos
V/V
kHz
%
%
A
2
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