LTC4089-1 - USB Power Manager with High Voltage Switching Charger
- Seamless Transition Between Power Sources: Li-Ion Battery, USB, and 6V to 36V External Supply
- High Efficiency 1.2A Charger from 6V to 36V Input
- Load Dependent Charging from USB Input Guarantees Current Compliance
- 215mΩ Internal Ideal Diode plus Optional External Ideal Diode Controller Provides Low Loss Power Path When External Supply/USB Not Present
- Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate without Risk of Overheating
- Selectable 100% or 20% Current Limit (e.g., 500mA/ 100mA) from USB Input
- Preset 4.1V Charge Voltage with 0.8% Accuracy
- C/10 Charge Current Detection Output
- NTC Thermistor Input for Temperature Qualified Charging
- Tiny (6mm x 3mm x 0.75mm) 22-Pin DFN Package
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 Number||Float Voltage||NTC Hot Threshold||Bat-Track HV Output|
PackagingFor complete and up to date package information and drawings, please refer to our packaging page
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
|Part Number||Package||Pins||Temp||Price (1-99)||Price (1k)*||RoHS Data|
|Buy Now • Request Samples|
Demo BoardsLinear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
Click here to view our complete list of demo boards
- Portable USB Devices—GPS Receivers, Cameras, MP3 Players, PDAs
People Who Viewed This Product Also Viewed
- LTC4089 - USB Power Manager with High Voltage Switching Charger
- LTC4000 - High Voltage High Current Controller for Battery Charging and Power Management
- LTC4088 - High Efficiency Battery Charger/USB Power Manager
- LTC3789 - High Efficiency, Synchronous, 4-Switch Buck-Boost Controller
- LTC3112 - 15V, 2.5A Synchronous Buck-Boost DC/DC Converter
- LT3796/LT3796-1 - 100V Constant-Current and Constant-Voltage Controller with Dual Current Sense
- LTM8062 - 32VIN, 2A uModule Power Tracking Battery Charger
- LTC4090/LTC4090-5 - USB Power Manager with 2A High Voltage Bat-Track Buck Regulator
- LTC4155 - Dual Input Power Manager/ 3.5A Li-Ion Battery Charger with I2C Control and USB OTG
- LTC4415 - Dual 4A Ideal Diodes with Adjustable Current Limit
Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.