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Numéro de sérieLTC3586
CategoriePower Management => Power Distribution/Switches => USB Power Controllers/Switches
DescriptionHigh Efficiency USB Power Manager With Boost, Buck-Boost And Dual Bucks
The LTC®3586 is a highly integrated power management and battery charger IC for Li-Ion/Polymer battery applications.It includes a high efficiency current limited switching PowerPath manager with automatic load prioritization, battery charger, ideal diode, and four synchronous switching regulators (two bucks, one buck-boost, and one boost).Designed specifically for USB applications, the LTC3586’s switching power manager automatically limits input current to a maximum of either 100mA or 500mA for USB applications or 1A for adapter-powered applications.
SociétéLinear Technology Corporation
DatasheetTélécharger LTC3586 datasheet
 
 
  • Description courte
  • FEATURES

    Power Manager n High Efficiency Switching PowerPathTM Controller with Bat-TrackTM Adaptive Output Control and "Instant-On" Operation n Programmable USB or Wall Current Limit (100mA/500mA/1A) n Full Featured Li-Ion/Polymer Battery Charger n 1.5A Maximum Charge Current n Internal 180m Ideal Diode Plus External Ideal Diode Controller Powers Load in Battery Mode n <30A No-Load Quiescent Current when Powered from BAT DC/DCs n Dual High Efficiency Buck DC/DCs (400mA I OUT) n High Efficiency Buck-Boost DC/DC (1A I OUT) n High Efficiency Boost DC/DC (800mA I OUT) n All Regulators Operate Synchronously at 2.25MHz

    LTC3586 High Efficiency USB Power Manager with Boost, Buck-Boost and Dual Bucks DESCRIPTION

    The is a highly integrated power management and battery charger IC for Li-Ion/Polymer battery applications. It includes a high efficiency current limited switching PowerPath manager with automatic load prioritization, battery charger, ideal diode, and four synchronous switching regulators (two bucks, one buck-boost, and one boost). Designed specifically for USB applications, the LTC3586's switching power manager automatically limits input current to a maximum of either or 500mA for USB applications or 1A for adapter-powered applications. Unlike linear PowerPath controllers, the LTC3586's switching input stage transmits nearly all of the 2.5W available from the USB port to the system load with minimal power wasted as heat. This feature allows the LTC3586 to provide more power to the application and eases the constraint of thermal budgeting in small spaces. The two buck regulators can provide to 400mA each, the buck-boost can deliver 1A, and the boost delivers at least 800mA. The LTC3586 is available in a low-profile × 6mm QFN package.

    , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. PowerPath and Bat-Track are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6522118, 6404251.

    APPLICATIONS

    Digital Still Cameras HDD-Based MP3 Players, PDAs, GPS, PMPs Portable Audio/Video Other USB-Based Handheld Products

    High Efficiency PowerPath Manager, Dual Buck, Buck-Boost and Boost

    USB/WALL TO 5.5V USB COMPLIANT STEP-DOWN REGULATOR CURRENT CONTROL CHARGE T LTC3586 ALWAYS ON LDO 4 EN MODE 2 ILIM HIGH EFFICIENCY BOOST 4 FAULT 5V/800mA AUDIO/ MOTOR

    700 BATTERY CHARGE CURRENT 600 EXTRA CURRENT FOR FASTER CHARGING 500mA USB CURRENT LIMIT
    Li-Ion TO 3.6V/400mA MEMORY/ CORE P I/O SYSTEM RTC/LOW POWER LOGIC
    DUAL HIGH EFFICIENCY BUCKS HIGH EFFICIENCY BUCK-BOOST
    VBUS 5V 5X MODE BATTERY CHARGER PROGRAMMED FOR 1A BATTERY VOLTAGE (V) 4 4.2
    TOP VIEW FAULT VBUS VOUT EN4 BAT 31 GATE 30 CHRG 29 PROG SWAB3 SW

    VBUS (Transient) < 1ms, Duty Cycle VIN3, VIN4, VBUS (Static), BAT, NTC, CHRG, FAULT, EN3, EN4, MODE, 0.3V to MAX (VBUS, VOUT, BAT) 0.3V ICLPROG....................................................................3mA IFAULT, ISW1, ISW2............................................................600mA ISW, IBAT, ISW4, IVOUT3...................................2.5A Operating Temperature Range (Note to 85°C Junction Temperature (Note 3)............................. 125°C Storage Temperature to 125°C

    UFE PACKAGE s 6mm) PLASTIC QFN TJMAX = 34°C/W EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB

    LEAD FREE FINISH LTC3586EUFE#PBF TAPE AND REEL LTC3586EUFE#TRPBF PART MARKING 3586 PACKAGE DESCRIPTION × 6mm) Plastic QFN TEMPERATURE RANGE to 85°C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/

    SYMBOL VBUS IBUSLIM PARAMETER Input Supply Voltage Total Input Current PowerPath Switching Regulator

    The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are = 25°C. VBUS = 5V, BAT = 5V, RPROG = 1k, RCLPROG = 3.01k, unless otherwise noted.

    CONDITIONS MIN 4.35 1x Mode, VOUT = BAT 5x Mode, VOUT = BAT 10x Mode, VOUT = BAT Suspend Mode, VOUT = BAT 1x Mode, IVOUT 0mA 5x Mode, IVOUT 0mA 10x Mode, IVOUT = 0mA Suspend Mode, IVOUT = 0mA

    SYMBOL hCLPROG (Note 4) PARAMETER Ratio of Measured VBUS Current to CLPROG Program Current

    The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are = 25°C. VBUS = 5V, BAT = 5V, RPROG = 1k, RCLPROG = 3.01k, unless otherwise noted.

    CONDITIONS 1x Mode 5x Mode 10x Mode Suspend Mode MIN TYP BAT 1x, 5x Modes 10x Mode BAT < VTRKL 100 1022 BAT < VTRKL BAT Rising Threshold Voltage Relative to VFLOAT Timer Starts When BAT = VFLOAT BAT < VTRKL ICHRG = 5mA VCHRG = 5V MAX UNITS mA/mA mV V MHz mA mV mA/mA V mV Hour mA/mA mV A

    VOUT Current Available Before Loading 1x Mode, BAT = 3.3V BAT 5x Mode, BAT 3.3V 10x Mode, BAT = 3.3V Suspend Mode CLPROG Servo Voltage in Current Limit VBUS Undervoltage Lockout VBUS to BAT Differential Undervoltage Lockout VOUT Voltage 5x, 10x Modes Suspend Mode Rising Threshold Falling Threshold Rising Threshold Falling Threshold 5x, 10x Modes, 0V < BAT < 4.2V, IVOUT = 0mA, Battery Charger Off USB Suspend Mode, IVOUT = 250A

    RPMOS_POWERPATH PMOS On-Resistance RNMOS_POWERPATH NMOS On-Resistance IPEAK_POWERPATH Battery Charger VFLOAT ICHG IBAT VPROG VPROG_TRKL VC/10 hPROG ITRKL VTRKL VRECHRG tTERM tBADBAT hC/10 VCHRG ICHRG BAT Regulated Output Voltage Constant Current Mode Charge Current Battery Drain Current PROG Pin Servo Voltage PROG Pin Servo Voltage in Trickle Charge C/10 Threshold Voltage at PROG Ratio of IBAT to PROG Pin Current Trickle Charge Current Trickle Charge Threshold Voltage Trickle Charge Hysteresis Voltage Recharge Battery Threshold Voltage Safety Timer Termination Bad Battery Termination Time CHRG Pin Output Low Voltage CHRG Pin Leakage Current RPROG = 1k RPROG = 5k VBUS > VUVLO , IVOUT = 0A VBUS = 0V, IVOUT = 0A (Ideal Diode Mode)