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RT8079 Datasheet(PDF) 5 Page - Richtek Technology Corporation

No. de pieza RT8079
Descripción Electrónicos  2.95V to 6V Input, 3A Output, 2MHz, Synchronous Step-Down Converter
PDF  13 Pages
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Fabricante Electrónico  RICHTEK [Richtek Technology Corporation]
Página de inicio  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8079 Datasheet(HTML) 5 Page - Richtek Technology Corporation

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5
DS8079-01
February 2013
www.richtek.com
RT8079
©
Copyright
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Note 1. Stresses beyond those listed
“Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may
affect device reliability.
Note 2.
θJA is measured at TA = 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7. θJC is
measured at the exposed pad of the package.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Switching Frequency Setting and External Synchronization (RT/SYNC pin)
Switching Frequency Range in
RT Mode
fOSC
300
--
2000
kHz
Oscillator Frequency
RRT = 180kΩ
--
1000
--
kHz
Switching Frequency Range in
ExtSYNC Mode
fSYNC
300
--
2000
kHz
MOSFET
High Side MOSFET Resistance
VBOOT − VSW = 5V
--
45
--
m
Ω
Low Side MOSFET Resistance
--
42
--
m
Ω
Current Limit
Current Limit Threshold
ILIM
4.2
6.6
--
A
Over Temperature Protection
Thermal Shutdown
Temperature
TSD
--
145
--
°C
Thermal Shutdown Hysteresis
ΔTSD
--
20
--
°C



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