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 2Current 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)
4mmx7mmx0.75mm 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
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