LTC4099 2 I C Controlled USB Power Manager/Charger with Overvoltage Protection Fae Tseru Dpircse Tnoi 2 n Switching Regulator with Bat-Track Adaptive Output The LTC 4099 is an I C controlled high efficiency USB Control Makes Optimal Use of Limited Input Power PowerPath controller and full-featured Li-Ion/Polymer 2 n I C Port for Optimal System Performance and battery charger. It seamlessly manages power distribution Status Information from multiple sources including USB, a wall adapter and n Input Overvoltage Protection a Li-Ion/Polymer battery. n Bat-Track Control of External Step-Down Switching The LTC4099 automatically limits its input current for Regulator Maximizes Efficiency from Automotive USB compatibility. For automotive and other high volt- and Other High Voltage Sources age applications, the LTC4099 interfaces with an external n Instant-On Operation with Low Battery switching regulator. Both the USB input and the auxiliary n Optional OvertemperatureBatter y Conditioner input controller feature Bat-Track optimized charging to ImprovesHigh T emperature BatterySafety Margin provide maximum power to the application and reduced n Ideal Diode Seamlessly Connects Battery When Input heat in high power density applications. Poweris Limited orUnavailable 2 n The I C port allows digital control of important application Full-Featured Li-Ion/PolymerBatter y Charger n parameters including input current limit, charge current 1.5A MaximumCharge Current with ThermalLimiting n and float voltage. Several status bits can also be read back SlewControl Reduces Switching EMI 2 n via I C. 20-Lead 3mm 4mm 0.75mm QFNPackage An overvoltage protection circuit guards the LTC4099 a acilpp Tsnoi from high voltage damage on the low voltage V pin.The BUS n MediaPlayers LTC4099 is available in a 20-Lead 3mm 4mm 0.75mm n PortableNavigation Devices QFN Package. n SmartPhones L,L T,L TC, LTM,Linear T echnologyand theLinear logo are registered trademarks of Linear Technology Corporation. PowerPath, Bat-Track and ThinSOT are trademarks of Linear n Industrial Handhelds Technology Corporation.All other trademarks are the property of their respective owners. Protectedby U.S. Patents, including6522118, 6570372, 6700364,6819094. Other patents n PortableMedical Instruments pending. T lacipy a acilpp Tnoi Reduced Power Dissipation vs Linear Battery Charger 2 I C Controlled High Efficiency Battery Charger/ 1.8 LINEAR BATTERY V = 5V USB Power Manager IN CHARGER OVERVOLTAGE I = 1A 1.6 CHARGE PROTECTION USB 3.3H 1.4 SYSTEM V SW BUS LOAD 1.2 10F V ADDITIONAL POWER OUT AVAILABLE FOR CHARGING 1.0 OVGATE BAT 10F LTC4099 6.2k 0.8 OVSENS BATSENS 0.6 NTCBIAS SWITCHING BATTERY 2 2 I C CLPROG PROG GND NTC TO CONTROLLER 100k CHARGER 0.4 0.2 + 0.1F 3.01k 1.02k 100k T Li-Ion 0 3.5 3.6 3.7 3.8 3.9 4.1 3.3 3.4 4 4099 TA01a BATTERY VOLTAGE (V) 4099 TA01b 4099fd POWER DISSIPATION (W)LTC4099 a ulosb T e Mixa Mu M r a Tsgni p ni noc Farugi Tnoi (Notes 1, 2, 3) TOP VIEW V ,W ALL(T ransient)t < 1ms, BUS DutyCycle < 1% ...................................... 0.3V to 7V V ,W ALL(Static), BA T,BA TSENS,IRQ , BUS 20 19 18 17 NTC, DV ............................................... 0.3V to 6V CC OVGATE 1 16 SCL SDA, SCL .......... 0.3V to Max (V , V , BAT) + 0.3V BUS OUT NTC 2 15 DV CC I .................................................................10mA OVSENS NTCBIAS 3 14 SW 21 I ....................................................................3mA CLPROG GND V 4 13 V C BUS I , I .........................................................2mA PROG NTCBIAS WALL V 5 12 OUT I ,I ,I ,I ..............................................2.25A BATSENS 6 11 BAT OUT SW BAT VBUS Maximum Junction Temperature........................... 125C 7 8 9 10 Operating TemperatureRange .................. 40Cto 85C StorageT emperature Range ...................65C to125C UDC PACKAGE I .........................................................................50mA IRQ 20-LEAD (3mm 4mm) PLASTIC QFNs I ......................................................................5mA ACPR T =125C, = 38C/W JMAX JA EXPOSED PAD (PIN 21)IS GND, MUST BE SOLDEREDTO PCB ro D re ni Fro Ma Tnoi LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4099EPDC PBF LTC4099EPDC TRPBF DQKT 40C to 85C (OBSOLETE) 20-Lead (3mm 4mm) Plastic UTQFN LTC4099EUDC PBF LTC4099EUDC TRPBF LFPY 40Cto 85C 20-Lead (3mm 4mm) Plastic QFN Consult LTC Marketing for parts specified with wider operating temperature ranges. For moreinformation on lead freepart marking, go to: