LTC3675 Datasheet | Linear Technology

Features n Four Monolithic Synchronous Buck DC/DCs (1A/1A/500m A/500m A) n Buck DC/DCs Can Be Paralleled to Deliver Up to 2× Current with a Single Inductor n Independent 1A Boost and 1A Buck-Boost DC/DCs n Dual String I2C Controlled 40V LED Driver n I2C Programmable Output Voltage, Operating Mode, and Switch Node Slew Rate for All DC/DCs n I2C Read Back of DC/DC, LED Driver, Fault Status n I2C Slave Address Options: LTC3675 = 0001001X, LTC3675-1 = 0110100X n Maskable Interrupts to Report DC/DC, VIN and Die Temperature Faults n Pushbutton ON/OFF/RESET n Always-On 25m A LDO n Low Quiescent Current: 16µA (All DC/DCs Off) n 4mm × 7mm × 0.75mm 44-Lead QFN Package Applications n High Power (5W to 10W) Single Cell Li-Ion/Polymer Applications n Portable Industrial Applications, Handy Terminals, Portable Instruments n Multioutput Low Voltage Power Supplies L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of Linear Technology Corporation and Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. LTC3675/LTC3675-1 7-Channel Configurable High Power PMIC Description The LTC®3675/LTC3675-1 are a digitally programmable high efficiency multioutput power supplies plus dual string LED driver ICs optimized for high power single cell Li-Ion/Polymer applications. The DC/DCs consist of four synchronous buck converters (1A/1A/500m A/500m A), one synchronous boost dc/dc (1A), and one buck-boost DC/ DC (1A) all powered from a 2.7V to 5.5V input. The 40V LED driver can regulate up to 25m A of current through two LED strings with up to 10 LEDs each. The LED driver may also be configured as a general purpose high voltage boost converter. DC/DC enables, output voltages, switch slew rates and operating modes may all be independently programmed over I2C or used in standalone mode via simple I/O and power-up defaults. The buck dc/dcs may be used independently or paralleled to achieve...