基于LTC3675设计的七路大功率PMIC管理技术

LTC3675主要特性：

Four Monolithic Synchronous Buck DC/DCs (1A/1A/500mA/500mA)

Buck DC/DCs Can Be Paralleled to Deliver Up to 2Current with a Single Inductor

Independent 1A Boost and 1A Buck-Boost DC/DCs

Dual String I2C Controlled 40V LED Driver

I2C Programmable Output Voltage, OperaTIng Mode, and Switch Node Slew Rate for All DC/DCs

I2C Read Back of DC/DC, LED Driver, Fault Status

I2C Programmable VIN and Die Temperature Warnings

Maskable Interrupts to Report DC/DC, VIN and Die Temperature Faults

Pushbutton ON/OFF/RESET

Always-On 25mA LDO

Low Quiescent Current: 16μA (All DC/DCs Off)

4mmx7mmx0.75mm 44-Lead QFN Package

LTC3675应用：

High Power (5W to 10W) Single Cell Li-Ion/Polymer ApplicaTIons

Portable Industrial ApplicaTIons, Handy Terminals, Portable Instruments

MulTIoutput Low Voltage Power Supplies

图1。LTC3675方框图

图2。LTC3675演示板外形图

图3。LTC3675应用电路图

图4。LTC3675降压应用电路图

图5。LTC3675降压稳压器和高压升压稳压组合应用电路图