ETA6027 输入限流OCP芯片
DESCRIPTION
The ETA6027 is a load switch which provides full
protection to systems and loads which may
encounter large current conditions.
ETA6027 offersa 70mΩ current-limited switch which can operate
over an input voltage range of 2.1-6V. The current
limit can be externally programmed by a precision
resistor, ranges from 75mA to 2.2A. Switch control
is by a logic input (EN) capable of interfacing
directly with low voltage control signals. Current is
prevented from flowing when the switch is off and
the output voltage is higher than the input voltage.
ETA6027 also features thermal shutdown
protection which shuts off the switch to prevent
damage to the part when a continuous over-current
condition causes excessive heating. When the
switch current reaches the current limit, the parts
operate in a constant-current mode to prohibit
excessive currents from causing damage. The
ETA6027 will not turn off after a current limit fault,
but will rather remain in the constant current mode
indefinitely. The nFAULT output asserts low during
over-current and reverse-voltage conditions.
ETA6027 is available in three types of package:
SOT23-5, SOT23-6, DFN2x2-6L
FEATURES
Input Operating Voltage Range: 2.1V to 6V
7.5V Input Standoff Voltage
6.1V OVP
Up to 2.2A Max Load current
Programmable Current-limit: 75mA to 2200mA
Accurate Current-Limit Threshold at 1.7A: +/-5%
Fast Over-Current Response
Fault Flag Output: nFAULT Pin
Reversed Input-Output Current blocking
Thermal Shutdown, UVLO protection
Tiny SOT23-5, SOT23-6, DFN2x2-6L Package
APPLICATIONS
USB Ports and Hubs
Digital TVs
Set-Top Boxes
VOIP Phones
