MPS: Automotive Dual-LDO With Pre-Boost and I²C-Interface
Dual-Channel Low-Dropout Regulator MPQ2026A-AEC1
With the MPQ2026A-AEC1, MPS introduces a dual-channel Low-Dropout Regulator (LDO). This LDO features a boost pre-regulator that operates at either 400kHz or 2.2MHz. Additionally, it includes an industry-standard synchronous serial interface and a one-time programmable (OTP) memory.
DOWNLOAD DATASHEETPhantom Power for Low-Noise Amplifiers
The device provides phantom power for low-noise amplifiers (LNAs) in active antennas of automotive systems and can operate under both cold crank conditions (3V) and load dump conditions (40V). The low-dropout regulator supplies up to 300mA per channel with outstanding load and line regulation.
When the battery is healthy (meaning when the input voltage (VIN) exceeds the pre-boost turn-on threshold) during normal operation, the pre-boost regulator is completely turned off to reduce the quiescent current (IQ). This makes the MPQ2026A well-suited for power supplies that are always turned on.
Reducing the External Component Count and EMI
The pre-boost regulator provides an integrated MOSFET to further reduce the external component count and EMI. Both the LDO and boost outputs can be configured via the industry-standard synchronous serial interface. The pre-boost regulator’s output voltage (VOUT_BOOST) can be configured between 6.5V and 15.9V. The LDO output voltages (VOUT1 and VOUT2) can be configured between 1V and 13.6V. This protects the LDO output during load dumps.
During bench evaluations, different configurations can be easily obtained via the industry-standard synchronous serial interface, instead of reworking external components. Once the optimal settings have been reached, the multi-page OTP memory can permanently store the settings.
The MPQ2026A comes in a compact QFN-16 (4x4mm) package.
Features of MPQ2026A-AEC1
Powerful Digital Capabilities
- No external resistor network for output voltage settings
- Configurable, dual LDOs:
- 300mA continuous output current (IOUTX) per channel
- 1V to 13.6VoOutput voltage (VOUTX) range
- Over-temperature protection
- Configurable, asynchronous pre-boost regulator:
- 4A/40V internal MOSFET
- 6.5V to 15.9V output voltage (VOUT _BOOST) range with 100mV adjustable steps
- 400kHz or 2.2MHz switching frequency (fSW)
- Over-temperaturepProtection
- Industry-standard synchronous serial interface
- Analog-to-digital converter (ADC) for LDO output voltages and load currents
- Multi-page one-time programmable (OTP) memory
Optimised For EMC/EMI Reduction
- Frequency dithering for low-EMI operation
Additional Features
- Wide 3V to 40V input voltage (VIN) range
- 35μA low quiescent current (IQ)
- Soft start (SS) for all regulator outputs
- LDO short-to-battery detection
- Available in a QFN-16 (4x4mm) package
- Available with wettable flanks
- Available in AEC-Q100 grade 1
Your Contact Person
For more information, please contact Thomas Berner.
