MP2019GN-33-Z Datasheet, PDF (12/16 Pages) MPS Industries, Inc. – 40V, 300mA, Low Quiescent Current Adjustable Output Linear Regulator

MP2019 - 40V, 300mA, LOW QUIESCENT-CURRENT LINEAR REGULATOR
OPERATION
The MP2019 is a linear regulator that supplies
power to systems with high-voltage batteries. It
includes a wide 3V to 40V input range, low
dropout voltage, and a low quiescent-supply
current (see Fig. 1).
The MP2019 provides a wide variety of fixed
output-voltage options: 1.8V, 1.9V, 2.3V, 2.5V,
3.0V, 3.3V, 3.45V, and 5.0V; also, it provides the
output-adjustable option (from 1.2V to 15V).
The output-adjustable version has an output that
is adjustable from 1.2V to 15V with a simple
resistor divider. It uses external feedback,
allowing the user to set the output voltage with an
external resistor divider. The FB threshold is
1.25V, typically.
The IC enters shutdown mode when EN is low. In
shutdown mode, the pass transistor, control
circuitry, reference, and all biases turn off; this
reduces the supply current to <0.1µA. Connect
EN to VIN for automatic start-up.
The regulator output current is limited internally,
and the device is protected against short-circuit,
over-load, and over-temperature conditions (see
Fig. 2).
The peak output current is limited to around
1000mA, which exceeds the 300mA
recommended continuous output current.
When the junction temperature is too high, the
thermal sensor sends a signal to the control logic
which shuts down the IC. The IC will re-start
when the temperature has cooled sufficiently.
The maximum power output current is a function
of the package’s maximum power dissipation for
a given temperature.
The maximum power dissipation is dependent on
the thermal resistance of the case and the circuit
board, the temperature difference between the
die junction and the ambient air, and the rate of
air flow. GND and the exposed pad must be
connected to the ground plane for proper
dissipation.
FIGURE 2. Power Good Timing
MP2019 Rev. 1.0
www.MonolithicPower.com
12
11/24/2015
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