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ETA1483 Dataheets PDF



Part Number ETA1483
Manufacturers ETA solutions
Logo ETA solutions
Description 18V High Efficiency Synchronous Step-Down Converter
Datasheet ETA1483 DatasheetETA1483 Datasheet (PDF)

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, ETA1.

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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 ETA1483 SOP8 TOP MARK ETA1483 TYPICAL APPLICATION www.ETAsolution.com Outperform with Efficiency Proprietary Information DO NOT Distribute 1 ETA1483 PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS BST 1 IN 2 SW 3 GND 4 ETA1483 SOP8 8 SS 7 EN 6 COMP 5 FB (Note: Exceeding these limits may damage the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.) IN Voltage...............................................................-0.3V to 20V SW, EN Voltage……………………………………..–0.3V to VIN+0.3V BST Voltage…………………………………………………–0.3V to SW+6V FB Voltage………………………………………………………….–0.3V to 6V SW to ground current ………….…….……….......Internally limited Operating Temperature Range ……................…–40°C to 85°C Storage Temperature Range ………………..….–55°C to 150°C ELECTRICAL CHACRACTERISTICS (VIN = 12V, unless otherwise specified. Typical values are at TA = 25oC.) PARAMETER CONDITIONS Input Voltage Range Input UVLO Rising, Hysteresis=100mV Input Over voltage lockout Input Supply Current Input Shutdown Current VFB =0.85V FB Feedback Voltage FB Input Current Error Amp Transconductance Current Sense Transresistance Switching Frequency High side Switch On Resistance Low side Switch On Resistance High side Switch Current Limit ISW =200mA ISW =200mA SW Leakage Current EN Input Current VIN=12V,VSW=0 or 12V, EN= GND EN Input Low Voltage Thermal S.


EM78P349 ETA1483 3UA7


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