ETA1483 查看數據表（PDF） - Unspecified
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ETA1483 Datasheet PDF : 1 Pages
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ETA1483
2A, 18V High Efficiency Synchronous Step-Down Converter
DESCRIPTION
The ETA1483 is a wide input range, high-efficiency,
DC-to-DC step-down switching regulator, capable of
delivering up to 2A of output current. Current mode PWM
control allows the use of small external components, such
as ceramic input and output caps, as well as small
inductors, while still providing low output ripples. On top of
the integrated internal synchronous rectifier that
eliminates external Schottky diode, ETA1483 also employs a
proprietary control scheme that switches the device into a
power save mode during light load, thereby extending the
range of high efficiency operation. Therefore, ETA1483 is a
much superior solution in comparison to other
competitions in terms of efficiency and cost.
Cycle-by-cycle current limit provides output short-circuit
protection and an input OVP function guards ETA1483
against possible input voltage surge. Overall, ETA1483 is a
highly efficient and robust solution for DC-DC step-down
applications that requires wide input ranges.
ETA1483 is housed in a SOP8 Package
FEATURES
Wide Input Operating Range from 4.5V to 18V
High Efficiency:
Up to 90%at Light Load
Up to 95% at Heavy Load
Capable of Delivering 2A
Input OVP at 20V
No External Schottky Diode Needed
Current Mode control
0.923V Reference for Low Output voltages
Logic Control Shutdown
Thermal shutdown and UVLO
Available in SOP8
APPLICATIONS
LCD TVs
Notebook computers
FPGA power supplies
LED drivers
Car Charging Device
ORDERING INFORMATION
PART
PACKAGE PIN
ETA1483S8A-T SOP8
ETA1483S8A-U
TOP MARK
ETA1483-Product Number
YWWPL Date Code
TYPICAL APPLICATION
10nF
Efficiency Vs IOUT
100
VIN
2
IN
1
BST
3
SW
100kΩ
22μF
ETA1483
7 EN
5
FB
8 SS
6
COMP
0.1μF
GND
4
10μH
VOUT 3.3V/2A
26.1kΩ
22μF
X2
5.6kΩ
10kΩ
3.3nF
90
80
70
60
50
40
VOUT=3.3V
30
20
200
Vin=5V
Vin=12V
2000
IOUT (A)
www.ETAsolution.com
Outperform with Efficiency
Proprietary Information DO NOT Distribute
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