MP2016 – 42V, 30mA, LOW POWER, LINEAR REGULATOR

MP2016 Rev.1.0

www.MonolithicPower.com

7

10/10/2011

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© 2011 MPS. All Rights Reserved.

OPERATION

--

+

IN

1.23V

FB

GND

SHND

OUT

1

3

4

2

5

Figure 1—Functional Block Diagram

The MP2016 is a linear regulator designed

primarily for high input voltage applications. The

MP2016 has an output that is adjustable from

1.2V to 40V with a simple resistor divider. The

maximum power output current is a function of

the package’s maximum power dissipation for a

given temperature.

The MP2016 uses external feedback, allowing

the user to set the output voltage with an external

resistor divider. The typical FB pin threshold is

1.23V.

low. In shutdown mode, the pass transistor,

control circuitry, reference and all biases turn off,

reducing the supply current to <2µA. Connect

SHDN

to IN for automatic startup.

The peak output current is limited to 50mA, which

exceeds the 30mA recommended continuous

output current. The output can be shorted to

ground for 30 seconds without damaging the part.

When the junction temperature is too high, the

thermal sensor sends a signal to the control logic

that will shutdown the IC. The IC will restart when

the temperature has sufficiently cooleds.

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. The GND pin and Exposed Pad must be

connected to the ground plane for proper

dissipation.