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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LTC4098-1 데이터시트(PDF) 1 Page - Linear Technology |
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LTC4098-1 데이터시트(HTML) 1 Page - Linear Technology |
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1 / 32 page  LTC4098/LTC4098-1 1 40981fb USB Compatible Switching Power Managers/Li-Ion Chargers with Overvoltage Protection The LTC®4098/LTC4098-1 are high efficiency USB Power- Path controllers and full-featured Li-Ion/Polymer battery chargers. They seamlessly manage power distribution from multiple sources including USB, wall adapter, automotive, Firewire or other high voltage DC/DC converters, and a Li-Ion/Polymer battery. The LTC4098/LTC4098-1’s internal switching regulator automatically limits its input current for USB compatibility. For automotive and other high voltage applications, the LTC4098/LTC4098-1 interface with a Linear Technology external switching regulator to provide a high efficiency high voltage power path. Both the USB and the optional high voltage inputs feature Bat-Track optimized charging to provide maximum power to the application and ease thermal issues in high power density applications with input supplies from 5V to as high as 38V. An overvoltage circuit protects the LTC4098/LTC4098-1 from high voltage damage on the USB/wall adaptor inputs with an N-channel FET and a resistor. The LTC4098/LTC4098-1 are available in the ultra-thin (0.55mm) 20-lead 3mm × 4mm QFN surface mount package. n Media Players n GPS n PDAs n Smart Phones n Switching Regulator with Bat-TrackTM Adaptive Output Control Makes Optimal Use of Limited Power Available from USB Port to Charge Battery and Power Application n Overvoltage Protection Guards Against Damage n Bat-Track External Step-Down Switching Regulator Control Maximizes Efficiency from Automotive, Firewire and Other High Voltage Input Sources n 180m Ω Internal Ideal Diode Plus External Ideal Diode Controller Seamlessly Provide Low Loss PowerPathTM when Input Power is Limited or Unavailable n Preset 4.2V Charge Voltage with 0.5% Accuracy (4.1V for LTC4098-1) n 4.1V Float Voltage (LTC4098-1) Improves Battery Life and High Temperature Safety Margin n Instant-On Operation with Discharged Battery n 700mA Maximum Load Current from USB Port n 1.5A Maximum Charge Current with Thermal Limiting n Ultra-Thin (0.55mm) 20-Lead 3mm × 4mm QFN High Efficiency USB/Automotive Battery Charger with Overvoltage Protection VBUS 10μF 0.1μF 3.01k 1k 10μF 3.3μH 6.04k VC WALL INPUT AUTOMOTIVE, FIREWIRE, ETC. INPUT USB TO μC SYSTEM LOAD 40981 TA01a CLPROG PROG LTC4098/LTC4098-1 GND SW BATSENS OVGATE OVSENS D0-D2 BAT VOUT Li-Ion + LT3653 3 USB Switching Regulator Efficiency to System Load (PVOUT/PVBUS) IVOUT (A) 0.01 0 20 40 60 80 0.1 1 40981 TA01b 100 10 30 50 70 90 BAT = 4.2V BAT = 3.3V VBUS = 5V IBAT = 0mA 10x MODE TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Bat-Track and PowerPath are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. |
유사한 부품 번호 - LTC4098-1 |
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유사한 설명 - LTC4098-1 |
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