LP8731-Q1数据手册TI中文资料规格书

描述 Description

The LP8731-Q1 is a multi-function, programmable Power Management Unit (PMU), optimized for low power FPGAs, microprocessors, and DSPs. This device integrates two highly efficient 1.2-A step-down DC-DC converters with dynamic voltage management (DVM), two 300-mA linear regulators, and a 400-kHz I2C-compatible interface to allow a host controller access to the internal control registers of the LP8731-Q1. The LP8731-Q1 device additionally features programmable power-on sequencing.

特性 Features

• Two LDOs for Powering Internal Processor Functions and I/Os
• High-Speed Serial Interface for Independent Control of Device Functions and Settings
• Precision Internal Reference
• Thermal Overload Protection
• Current Overload Protection
• Software Programmable Regulators
• External Power-On-Reset Function for Buck1 and Buck2 (Power Good with Delay Function)
• Undervoltage Lockout (UVLO)
• LP8731-Q1 is an Automotive-Grade Product: AECQ-100 Grade-1 Qualified
• Step-Down DC/DC Converter (2xBuck)
• Programmable VOUT from:
• Buck1 : 0.8875 V – 1.675 V at 1.2 A
• Buck2 : 0.8875 V – 1.675 V at 1.2 A

• Up to 96% Efficiency
• PWM Switching Frequency of 2.1 MHz
• ±2% Output Voltage Accuracy
• Automatic Soft Start

• Linear Regulators (2xLDO)
• Programmable VOUT of 0.8 V to 3.3 V
• ±3% Output Voltage Accuracy
• 300-mA Output Current
• 30-mV (Typical) Dropout