LP8764-Q1

• AEC-Q100 Qualified with the Following Results:
  • Device temperature grade 1: –40°C to +125°C Ambient Operating Temperature Range
• Developed According to the Requirements of ISO26262 Supporting ASIL-D Systems (SEooC)
  • Designed for Function Safety Applications
  • Windowed Voltage and Over-Current Monitors
  • Integrated Q&A or Trigger Mode Watchdog Module
  • Level or PWM Error Signal Monitoring (ESM) Supporting Processors with Safety-MCU
  • Thermal Monitoring with High Temperature Warning and Thermal Shutdown
  • NVM Bit-Integrity Error Detection
• Input Voltage: 2.8 V to 5.5 V
• 4 High-Efficiency Multiphase Step-Down DC/DC Converters:
  • Output Voltage: 0.3 V to 3.34 V (0.3 V to 1.9 V for Multi-Phase Outputs)
  • Maximum output current: 5 A per phase, up to 20 A with 4-Phase Configuration
  • Programmable Output Voltage Slew-Rate
  • Switching frequency: 2.2 MHz or 4.4 MHz
• 10 configurable General Purpose I/O (GPIO)
• One SPI or Two I²C-compatible Interfaces that Support Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
• SPMI Interface for Multi-PMIC Synchronization
• Input Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)

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The LP8764-Q1 device is designed to meet the power management requirements of the latest processors and platforms in various safety-relevant automotive and industrial applications. The device has four step-down DC/DC converter cores, which are configurable for five different configurations: one 4-phase output, one 3-phase and one 1-phase outputs, one 2-phase and two 1-phase outputs, four 1-phase outputs, or two 2-phase outputs. Most of the device static settings can be changed by I²C-compatible serial interface or by a SPI serial interface.

The automatic PFM/PWM (AUTO mode) operation together with the automatic phase adding and phase shedding maximizes efficiency over a wide output-current range. The LP8764-Q1 device supports remote differential voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) which improves the accuracy of the output voltage. The switching clock can be forced to PWM mode and the phases are interleaved. The switching can be synchronized to an external clock and spread-spectrum mode can be enabled to minimize the disturbances.