基于LTC3675設計的七路大功率PMIC管理技術
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應用:
High Power (5W to 10W) Single Cell Li-Ion/Polymer Applications
Portable Industrial Applications, Handy Terminals, Portable Instruments
Multioutput Low Voltage Power Supplies
圖1。LTC3675方框圖
圖2。LTC3675演示板外形圖
圖3。LTC3675應用電路圖
圖4。LTC3675降壓應用電路圖
圖5。LTC3675降壓穩(wěn)壓器和高壓升壓穩(wěn)壓組合應用電路圖
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