深圳市科瑞芯电子有限公司

钰泰 ETA2848 SOT23-6 电池充电管理芯片

DESCRIPTION
The ETA2848 is a wide input range. hgngficiency.
synchronous step-down switching regulator. capable of
delivering up to 0.4A of output current. With a fixed switching
frequency of 700KHz. this   current mode PWM controlled
converter allows the use of small external components, such
as ceramic input and output caps， as well as small
inductors.ETA2848 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. An OVP function protects the IC itself
and its downstream system against input voltage surges. With
this 0VP function, the IC can stand off input voltage as high as
42V. making it an ideal solution for industrial alications
such as smart meters as well as automotive applications.
In automotive systems, power comes from the battery, with
its voltage typically between 9V and 24V. Including cold crank
and double battery jump-starts, the minimum input voltage
may be as low as 5V and the maximum up to 36V, with even
higher transient voltages. With these high input voltages,
linear regulators cannot be used for high supply currents
without overheating the regulator. Instead, high eficiency
switching regulators such as ETA2848 must be used to
minimize thermal dissipation.

ETA2848 is available SOT23-6 Packages.