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LT1612 Folha de dados(PDF) 2 Page - Linear Technology

Nome de Peças LT1612
Descrição Electrónicos  Synchronous, Step-Down 800kHz PWM DC/DC Converter
Download  8 Pages
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Fabricante Electrônico  LINER [Linear Technology]
Página de início  http://www.linear.com
Logo LINER - Linear Technology

LT1612 Folha de dados(HTML) 2 Page - Linear Technology

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LT1612
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IQ
Quiescent Current
MODE = 5V
q
12
mA
MODE = 0V, Not Switching
q
160
220
µA
SHDN = 0V
q
1
µA
VFB
FB Voltage
0.605
0.62
0.635
V
q
0.60
0.62
0.635
V
FB Line Regulation
q
0.02
0.15
%/V
FB Pin Bias Current (Note 3)
q
750
nA
gm
Error Amplifier Transconductance
250
µmhos
Min Input Voltage
2V
Max Input Voltage
5.5
V
fOSC
Oscillator Frequency
700
800
900
kHz
q
550
1100
kHz
fOSC Line Regulation
1%/ V
Maximum Duty Cycle
85
90
%
q
80
%
Shutdown Threshold
Minimum Voltage for Active
q
2V
Maximum Voltage for Shutdown
q
0.2
V
LT1612EMS8
TJMAX = 125°C, θJA = 120°C/ W
ORDER PART
NUMBER
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
(Note 1)
ABSOLUTE MAXIMUM RATINGS
PACKAGE/ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
Consult factory for Military grade parts.
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
LT1612ES8
ORDER PART
NUMBER
MS8 PART MARKING
TJMAX = 125°C, θJA = 120°C/ W
S8 PART MARKING
1612
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25°C, VIN = VSHDN = 3V
VC
FB
VIN
GND
1
2
3
4
8
7
6
5
SHDN
MODE
BOOST
SW
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TOP VIEW
SHDN
MODE
BOOST
SW
VC
FB
VIN
GND
S8 PACKAGE
8-LEAD PLASTIC SO
1
2
3
4
8
7
6
5
LTMS


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