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News
Highly Integrated 36V Buck Battery Charger Provides Seamless Backup Power
2017-07-18 | ReturnThe LTC4091 includes 60V absolute maximum input overvoltage protection, making the IC immune to high input voltage transients. The LTC4091’s battery charger provides two pinselectable charge voltages optimized for Li-Ion battery backup applications: the standard 4.2V, and a 4.1V option that trades off battery run time for increased charge/discharge cycle life. Other features include soft start and frequency foldback to control output current during start-up and overload, as well as trickle charge, automatic recharge, low battery precharge, charge timer termination, thermal regulation and a thermistor pin for temperature-qualified charging.
The LTC4091 is housed in a low profile (0.75mm) 22-pin 3mm x 6mm DFN package with a backside metal pad for excellent thermal performance. The device operates from –40°C to 125°C in both E and I grades. 1,000-piece pricing starts at $3.25 each for the E grade and devices are in stock. For more information, visit www.linear.com/product/LTC4091.
Summary of Features: LTC4091
• Seamless Transition Between Primary Power Source & Li-Ion Battery
• 2A High Voltage Step-Down Regulator with Adaptive Output Control
• Internal 75mΩ Ideal Diode Plus Optional External Ideal Diode Controller Provides Low Loss PowerPath™ When Primary Supply Not Present
• Wide Input Voltage Range: 6V to 36V (60V Abs Max)
• 4.45V Max Output Voltage
• Full Featured Li-Ion Battery Charger
• Pin-Selectable 4.1V & 4.2V Charge Voltage Options
• Thermally Enhanced, Low Profile (0.75mm) 3mm × 6mm 22-Pin DFN Package
Pricing shown is for budgetary use only and may differ due to local duties, taxes, fees and exchange rates.
Source:http://www.linear.com/