LT1612_1 데이터 시트보기 (PDF) - Linear Technology
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LT1612_1 Datasheet PDF : 8 Pages
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LT1612
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage (VIN) ............................................... 5.5V
SW Pin Voltage ....................................................... 5.5V
FB Pin Voltage ............................................... VIN + 0.3V
VC Pin Voltage ........................................................... 2V
SHDN Pin Voltage ................................................... 5.5V
MODE Pin Voltage .................................................. 5.5V
BOOST Pin Voltage ....................................... VIN + 5.5V
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
PACKAGE/ORDER INFORMATION
TOP VIEW
VC 1
FB 2
VIN 3
GND 4
8 SHDN
7 MODE
6 BOOST
5 SW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 120°C/ W
ORDER PART
NUMBER
LT1612EMS8
MS8 PART MARKING
LTMS
Consult factory for Military grade parts.
TOP VIEW
VC 1
FB 2
VIN 3
GND 4
8 SHDN
7 MODE
6 BOOST
5 SW
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 120°C/ W
ORDER PART
NUMBER
LT1612ES8
S8 PART MARKING
1612
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25°C, VIN = VSHDN = 3V
SYMBOL PARAMETER
IQ
Quiescent Current
VFB
FB Voltage
FB Line Regulation
FB Pin Bias Current (Note 3)
gm
Error Amplifier Transconductance
Min Input Voltage
Max Input Voltage
fOSC Oscillator Frequency
fOSC Line Regulation
Maximum Duty Cycle
Shutdown Threshold
CONDITIONS
MODE = 5V
MODE = 0V, Not Switching
SHDN = 0V
Minimum Voltage for Active
Maximum Voltage for Shutdown
MIN TYP MAX
q
1
2
q
160 220
q
1
0.605 0.62 0.635
q 0.60 0.62 0.635
q
0.02 0.15
q
7
50
250
2
5.5
700
q 550
800 900
1100
1
85
90
q
80
q
2
q
0.2
UNITS
mA
µA
µA
V
V
%/V
nA
µmhos
V
V
kHz
kHz
%/ V
%
%
V
V
2
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