USB Car Charge IC,36V,3.5A
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 4A of output current and 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 4V and
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. |
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