Analog Devices Inc./Maxim Integrated

The LTC4089-1 is a USB power manager plus high voltage Li-Ion battery charger. This device controls the total current used by the USB peripheral for operation and battery charging. Battery charge current is automatically reduced such that the sum of the load current and the charge current does not exceed the programmed input current limit. The LTC4089-1 also accommodates high voltage power supplies, such as 12V AC-DC wall adapters, FireWire, or automotive power.The LTC4089-1 provides a fixed 5V output from the high voltage input to charge single cell Li-Ion batteries. The charge current is programmable and an end-of-charge status output (CHRG) indicates full charge. Also featured is programmable total charge time, an NTC thermistor input used to monitor battery temperature while charging and automatic recharging of the battery.Part NumberFloat VoltageNTC Hot ThresholdBat-Track HV OutputLTC40894.2V29% VVNTCYesLTC4089-14.1V32.6% VVNTCNoLTC4089-33.95V32.6% VVNTCYesLTC4089-54.2V29% VVNTCNoApplicationsPortable USB Devices—GPS Receivers, Cameras, MP3 Players, PDAs

The LTC4089-3 is a USB power manager plus high voltage Li-Ion battery charger. This device controls the total current used by the USB peripheral for operation and battery charging. Battery charge current is automatically reduced such that the sum of the load current and the charge current does not exceed the programmed input current limit. The LTC4089-3 also accommodates high voltage power supplies, such as 12V AC/DC wall adapters, Firewire, or automotive power.The LTC4089-3 provides an adaptive output that tracks the battery voltage for high efficiency charging from the high voltage input. This 3.95V version of the the standard LTC4089 is intended for applications which have extended battery lifetime requirements or those that require high temperature (approximately >60°C) operation or storage. Under these conditions, a reduced float voltage will trade-off initial cell capacity for the benefit of increased capacity retention over the life of the battery. The charge current is programmable and an end-of-charge status output (CHRG) indicates full charge. Also featured are programmable total charge time, an NTC thermistor input used to monitor battery temperature while charging and automatic recharging of the battery.Part NumberFloat VoltageNTC Hot ThresholdBat-Track HV OutputLTC40894.2V29% VVNTCYesLTC4089-14.1V32.6% VVNTCNoLTC4089-33.95V32.6% VVNTCYesLTC4089-54.2V29% VVNTCNoApplicationsPortable USB Devices—GPS Receivers, Cameras,MP3 Players, PDAs

The LTC4090-3 is a USB power manager plus high voltage Li-Ion/Polymer battery charger. The device controls the total current used by the USB peripheral for operation and battery charging. Battery charge current is automatically reduced such that the sum of the load current and the charge current does not exceed the programmed input current limit. The LTC4090-3 also accommodates high voltage power supplies, such as 12V AC/DC wall adapters, Firewire, or automotive power.The LTC4090 provides a Bat-Track adaptive output that tracks the battery voltage for high efficiency charging from the high voltage input. This 3.95V version of the standard LTC4090 is intended for applications which have extended battery lifetime requirements or those that require high temperature (>60°C) operation or storage under these conditions. A reduced float voltage will trade off initial cell capacity for the benefit of increased capacity retention over the life of the battery. The charge current is programmable and an end-of-charge status output (CHRG) indicates full charge.Float Voltage (V)NTC Hot ThresholdBat-Track Adaptive HV OutputLTC40904.2V29% VVNTCYesLTC4090-33.95V32.6% VVNTCYesLTC4090-54.2V29% VVNTCNoApplicationsEmbedded Automotive AccessoriesPersonal Navigation DevicesOther USB-Based Handheld Products

The LTC4096/LTC4096X are standalone linear chargers that are capable of charging a single-cell Li-Ion or Li-Polymer battery from both wall adapter and USB inputs. The chargers can detect power at the inputs and automatically select the appropriate power source for charging.No external sense resistor or blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the battery charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The float voltage is fixed at 4.2V and the charge current is programmed with an external resistor. The LTC4096 terminates the charge cycle when the charge current drops below the user programmed termination threshold after the final float voltage is reached. The LTC4096 can be put into shutdown mode reducing the DCIN supply current to 20µA, the USBIN supply current to 10µA, and the battery drain current to less than 2µA even with power applied to both inputs.Other features include trickle charge (LTC4096 only), automatic recharge, undervoltage lockout, charge status output and power present output with 120mA drive capability.ApplicationsCellular TelephonesMP3 PlayersPortable Handheld Devices

The LTC4098-3.6 is a high efficiency USB PowerPath controller and full-featured LiFePO4battery charger. It seamlessly manages power distribution from multiple sources including USB, wall adapter, automotive, Firewire or other high voltage DC/DC converters, and a LiFePO4battery.The LTC4098-3.6 charge algorithm is optimized for LiFePO4by implementing a 1-hour float voltage termination timer and a 0°C to 60°C NTC-based charge qualification range. Furthermore, completely discharged batteries are charged at the full programmed charge current.The LTC4098-3.6’s switching regulator can automatically limit its input current for USB compatibility. For automotive and other high voltage applications, the LTC4098‑3.6 interfaces with an external switching regulator. Both the USB input and the auxiliary input controller feature Bat-Track optimized charging to provide maximum power to the application and reduced heat in high power density applications with input supplies from 5V to as high as 38V.An overvoltage protection circuit guards the LTC4098-3.6 from high voltage damage on the VBUS pin with just two external components.The LTC4098-3.6 is available in a 20-lead 3mm × 4mm × 0.75mm QFN surface mount package.Float VoltageLTC40984.2V (1-cell Li-Ion/Li-Polymer)LTC4098-14.1V (1-cell Li-Ion/Li-Polymer)LTC4098-3.63.6V (1-cell LiFePO4)ApplicationsHigh Peak Power Battery-Powered EquipmentBackup ApplicationsHigh Reliability Handhelds

The LTC4098-3.6 is a high efficiency USB PowerPath controller and full-featured LiFePO4battery charger. It seamlessly manages power distribution from multiple sources including USB, wall adapter, automotive, Firewire or other high voltage DC/DC converters, and a LiFePO4battery.The LTC4098-3.6 charge algorithm is optimized for LiFePO4by implementing a 1-hour float voltage termination timer and a 0°C to 60°C NTC-based charge qualification range. Furthermore, completely discharged batteries are charged at the full programmed charge current.The LTC4098-3.6’s switching regulator can automatically limit its input current for USB compatibility. For automotive and other high voltage applications, the LTC4098‑3.6 interfaces with an external switching regulator. Both the USB input and the auxiliary input controller feature Bat-Track optimized charging to provide maximum power to the application and reduced heat in high power density applications with input supplies from 5V to as high as 38V.An overvoltage protection circuit guards the LTC4098-3.6 from high voltage damage on the VBUS pin with just two external components.The LTC4098-3.6 is available in a 20-lead 3mm × 4mm × 0.75mm QFN surface mount package.Float VoltageLTC40984.2V (1-cell Li-Ion/Li-Polymer)LTC4098-14.1V (1-cell Li-Ion/Li-Polymer)LTC4098-3.63.6V (1-cell LiFePO4)ApplicationsHigh Peak Power Battery-Powered EquipmentBackup ApplicationsHigh Reliability Handhelds

The LTC4098/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 an 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 a 20-lead, 3mm × 4mm × 0.75mm QFN surface mount package.Float VoltageLTC40984.2V (1-cell Li-Ion/Li-Polymer)LTC4098-14.1V (1-cell Li-Ion/Li-Polymer)LTC4098-3.63.6V (1-cell LiFePO4)ApplicationsMedia PlayersGPSPDAsSmart Phones