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Datasheet Linear Technology LTC3675-1

ManufacturerLinear Technology

7-Channel Configurable High Power PMIC


  • Download » Datasheet PDF, 594 Kb, Revision: C, File uploaded: Sep 22, 2017
    LTC3675/LTC3675-1 - 7-Channel Configurable High Power PMIC
    Docket ↓
    7-Channel Configurable
    High Power PMIC
    Features Description Four Monolithic Synchronous Buck DC/DCs
    n Buck DC/DCs Can Be Paralleled to Deliver Up to
    2Г— 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, V and Die
    Temperature Faults
    n Pushbutton ON/OFF/RESET
    n Always-On 25mA LDO
    n Low Quiescent Current: 16ВµA (All DC/DCs Off)
    n 4mm Г— 7mm Г— 0.75mm 44-Lead QFN Package The LTCВ®3675/LTC3675-1 are a digitally programmable
    high efficiency multioutput power supplies plus dual
    string LED driver ICs optimized for high power single cell ...



Package4x7 QFN-44
Package Outline Drawing
4x7 QFN-44
Package Outline Drawing
Package CodeUFFUFF
Package Index05-08-176205-08-1762
Pin Count4444


Boost Switch Current, A11
Buck Output Current, A0.5, 0.5, 1, 10.5, 0.5, 1, 1
Buck-Boost Output Current, A11
Demo BoardsDC1607ADC1607A
Export Controlnono
FeaturesBurst Mode, I2C Control, Adjustable Slew RateBurst Mode, I2C Control, Adjustable Slew Rate
LDO Output Current, A0.0250.025
Number of Outputs77
Operating Temperature Range, °C0 to 850 to 85
Vin Max, V5.55.5
Vin Min, V2.72.7

Eco Plan

Other Options



  • Download » Articles - LT Journal PDF, 599 Kb, File published: Oct 27, 2010
    4mm × 7mm IC Produces Seven Regulated Outputs and a Dual-String LED Driver
    Docket ↓
    4mm Г— 7mm IC Produces Seven Regulated Outputs
    and a Dual-String LED Driver
    Aspiyan Gazder The LTC3675 is a space-saving single-chip power solution for multirail applications
    that run from a single Li-ion cell. Its 4mm Г— 7mm QFN contains two 500mA buck
    regulators, two 1A buck regulators, a 1A boost regulator, a 1A buck-boost regulator,
    a boost LED driver capable of driving dual LED strings up to 25mA, and an alwayson 25mA LDO for powering a housekeeping microprocessor. All regulators can be
    controlled via I2C. Figure 1 shows an eight-rail solution run from a single Li-ion battery.
    SWITCHING REGULATOR FEATURES All of the voltage regulators in the LTC3675
    are internally compensated monolithic
    synchronous regulators. The buck regulators and the buck-boost regulator can be
    enabled via enable pins or I2C, whereas
    the boost regulator is enabled via I2C only.
    The feedback regulation voltage of
    the regulators can be programmed via
    I2C from 425mV to 800mV in 25mV steps.
    Each regulator offers two modes of light
    load operation. The buck regulators offer
    Burst Mode operation for the greatest efficiency and pulse skipping-mode for more
    predictable EMI. The boost and buck-boost
    regulators offer Burst Mode operation
    and PWM mode. Each regulator’s operating mode can be programmed via I2C.
    The regulators also feature
    I2C-programmable slew rate control ...

Moldel Line

Series: LTC3675-1 (2)

Manufacturer's Classification

  • Power Management > Switching Regulator > Digitally Programmable Regulators
  • Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers
  • Power Management > PMIC & Multifunction > Multitopology DC/DC

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