MP2014 - 40V, 500mA, LOW QUIESCENT CURRENT LINEAR REGULATOR

MP2014 Rev. 1.01

www.MonolithicPower.com

8

1/15/2016

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OPERATION

The MP2014 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 low quiescent supply

current.

The MP2014 provides wide variety of fixed

output voltage options: 1.8V, 1.9V, 2.3V, 2.5V,

3.0V, 3.3V, 3.45V, 5.0V.

Short-Circuit Protection

The regulator output current is internally limited

and the device is protected against short-circuit,

over-load. The peak output current is limited to

around 900mA, which exceeds the 500mA

recommended continuous output current.

Thermal Shutdown

When the junction temperature exceeds the

upper threshold (165

°C), the thermal sensor

sends a signal to the control logic to shutdown

the IC. The IC will restart when the temperature

has sufficiently cooled (135

°C).

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. The GND pin and

Exposed Pad must be connected to the ground

plane for proper dissipation.

Power Good Output

MP2014 has one power good (PG) pin. The PG

pin is the open drain of an internal MOSFET. It

source(<15V) through a resistor (i.e. 100kohm).

the MOSFET turns off and PG pin is pulled to

voltage is pulled to GND.

There is a delay time when PG asserts high.

The delay time can be programmed by adding a

capacitor on PGDL. To select a capacitor for

PGDL, use below equation:

PGDL

PGDL

PGDL

th_PGDL

t(ms) I

( A)

C(nF)

V(V)

μ

×

=

Figure 2 shows the power good timing.

Figure 1: Functional Block Diagram