降压稳压器
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ETA(钰泰半导体)
降压稳压器
ETA2831
The ETA2831 is a total solution IC specifically for high voltage USB charging applications. It includes a wide input range, high-efficiency, and high frequency DC-to-DC step-down switching regulator that is capable of delivering up to 4Aof output currentand a low side USB current limiting switch. The DC-DC in ETA2831 is a current mode converter with a fixedfrequency that is externally adjustable. There is also a cable resistance compensation feature that allows users to adjust the output voltage to compensate for the voltage drop due to cable resistance.
An OVP function protects the IC itself and its downstream system against input voltage surges. With this OVP function, the IC can stand off input voltage as high as 42V, making it an ideal solution for industrial applications such as smart meters as well as automotive applications. In automotive systems, power comes from the battery, with its voltage typically ranges between 9V and 24V. Including cold crank and double battery jump-starts, the minimum input voltage may be as low as 4Vand the maximum up to 36V, This makes ETA2831 ideal for the automotive application.
There is also a low side current limiting USB switch in ETA2831. The current limit is internally set at 1A. Since the total output current limit of the DCDC can be externally adjusted with a resistor, this 1A USB switch provides flexible configurations for two-port USB charging system.
FEATURES
Wide Input Operating Range from 4V to 36V
Standoff Input Voltage: 42V
High Efficiency at 12V In 5V Out: Up to 91%:
High Efficiency PFM modeat light load
Capable of Delivering 3.5A output current
Peak Output Current up to 4A
Cable resistance compensation
Adjustable Switching frequency
Adjustable Output current limit
Frequency dithering Option for low EMI available
Current Mode control
Logic Control Shutdown
Thermal shutdown and UVLO
APPLICATIONS
Car Charge ports
Multi-cell Li-ion Battery Charger
需要样品测试或详细资料请联系：18126521362（点击复制微信号）
