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Overview
| Topology | Buck-Boost Converter |
| Input voltage | 3.1-3.5 V |
| Output 1 | 5 V / 3 A |
Description
The LP8774x-Q1 device is designed to meet the power management requirements of the AWR and IWR MMICs in various automotive and industrial radar applications. The device has three step-down DC/DC converters, a 5 V boost converter and a 1.8 V/3.3 V LDO. The LDO is powered from the boost and intended for xWR and peripheral devices IO supply. The device is controlled by an SPI serial interface and by enable signal.The step-down DC/DC converters support programmable switching frequency of 17.6 MHz, 8.8 MHz or 4.4 MHz and have low noise across wide frequency range which enables LDO-free power solution with minimal or no additional passive filtering. LP8774x-Q1 device offers flexible external component selection to optimize the solution in terms of performance or cost. The features of the device target safety-relevant applications with system-safety requirements up to ASIL-C level.
Features
- Evaluation of LP877451A1RXVRQ1 device features and performance
- Onboard wide VIN preregulator to generate 3.3-V input to the PMIC from 12-V battery supply
- Onboard USB2ANY MCU to communicate with the Device GUI and evaluate device safety features like Q&A watchdog
Typical applications
- Short range and medium range radar, Ultra-short range radar, Long range radar
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | fres(MHz) | VOP(V) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-MAPI SMT Power Inductor, 1.5 µH, 8.6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | Inductance1.5 µH | Performance Rated Current8.6 A | Saturation Current @ 30%10.2 A | DC Resistance16 mΩ | Self Resonant Frequency48 MHz | Operating Voltage80 V | MountSMT |