LP3906数据手册集成电路（IC）的电源管理-专用规格书PDF

描述 Description

The LP3906 is a multi-function, programmable Power Management Unit, optimized for low power FPGAs, Microprocessors and DSPs.This device integrates two highly efficient 1.5A Step-Down DC/DC converters with dynamic voltage management (DVM), two 300mA Linear Regulators and a 400kHz I2C compatible interface to allow a host controller access to the internal control registers of the LP3906. The LP3906 additionally features programmable power-on sequencing and is offered in a tiny 5 x 4 x 0.8mm WQFN-24 pin package.

特性 Features

• Compatible with Advanced Applications Processors and FPGAs
• 2 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
• 24-lead 5 × 4 × 0.8 mm WQFN Package
• Software Programmable Regulators
Key Specifications
• DC/DC Converter (Buck)
• 1.5A Output Current
• Programmable VOUT from:Buck1 : 0.8V–2.0VBuck2 : 1.0V–3.5V
• Up to 96% Efficiency
• 2 MHz PWM Switching Frequency
• ±3% Output Voltage Accuracy
• Automatic Soft Start

• Linear Regulators (LDO)
• Programmable VOUT of 1.0V–3.5V
• ±3% Output Voltage Accuracy
• 300 mA Output Currents
• 25 mW (Typ) Dropout