DESCRIPTION

The MPQ2024A is a low-dropout (LDO)

regulator that contains a boost pre-regulator

operating at either 400kHz or 2.2MHz with I2C

interface and one-time programmable (OTP)

memory. The device provides phantom power

to low-noise amplifiers (LNAs) for active

antennas in automotive systems from a cold

crank through load dump (3V to 40V) input

voltage (VIN) conditions.

It delivers up to 300mA of load current, with

excellent load and line regulation. During

normal operation, when the battery is healthy,

the pre-boost is completely turned off to reduce

the quiescent current (IQ), which makes the

device suitable for always-on power supplies.

The MPQ2024A also integrates a MOSFET in

the pre-boost to further reduce the external

component count and EMI. Both the LDO and

boost outputs are configurable through I2C

interface. The pre-boost output voltage (VOUTBOOST) is adjustable from 6.5V to 15.9V. The

LDO output voltage (VOUT) is adjustable from 1V

to 13.6V. The LDO output is protected during

load dump conditions.

During bench evaluations, different

configurations can be easily obtained via the

I

2C interface instead of reworking external

components. Once the desired setting has been

reached, a one-time programmable (OTP)

memory allows the settings to be permanently

stored.

The MPQ2024A is available in a QFN-16

(4mmx4mm) package with wettable flanks, and

is AEC-Q100 qualified.

FEATURES

? Powerful Digital Functions:

o No External Resistor Network for Output

Voltage Settings

o Configurable LDO

? 300mA Continuous Output Current

(IOUT)

? 1V to 13.6V Output Voltage (VOUT)

Range

? Over-Temperature Protection

o Configurable Asynchronous Pre-Boost

Regulator

? 4A/40V Internal MOSFET

? 6.5V to 15.9V Output Voltage (VOUTBOOST) Range with 100mV Adjustable

Steps

? Switching Frequency (fSW)

Configurable to 400kHz or 2.2MHz

? Over-Temperature Protection

o I

2C Interface

o Analog-to-Digital Converter (ADC) for

LDO VOUT and Load Current

o One-Time Programmable (OTP)

Memory

? Optimized for EMC/EMI:

o Frequency Dithering for Low EMI

? Additional Features:

o Wide 3V to 40V VIN Range

o 35μA Low Quiescent Current (IQ)

o LDO Short-to-Battery Detection

o Soft Start for Both Regulator Outputs

o Open-Load Detection

o Available in a QFN-16 (4mmx4mm)

Package

o Available in a Wettable Flank Package

o Available in AEC-Q100 Grade 1

APPLICATIONS

? Automotive Antenna Phantom Power

? Automotive Cameras

? Automotive ADAS Systems with Functional

Safety and ASIL Requirements