MAX8713

19-3498; Rev 0; 11/04 www.DataSheet4U.com KIT ATION EVALU E L B A AVAIL Simplified Multichemistry SMBus Battery Charger General Description Features ♦ Over 2A Charge Current ♦ Intel SMBus 2-Wire Serial Interface ♦ ±0.6% Charge Voltage Accuracy ♦ 11-Bit Charge Voltage Resolution ♦ 6-Bit Charge Current Resolution ♦ Adjustable Switching Frequency ♦ +8V to +28V Input Voltage Range ♦ Cycle-By-Cycle Current Limit ♦ Charges Any Battery Chemistry (Li+, NiCd, NiMH, Lead Acid, etc.) ♦ Small 24-Pin TQFN MAX8713 The MAX8713 multichemistry battery charger simplifies construction of smart chargers with a minimum number of external components. It uses the Intel System Management Bus (SMBus™) to control the charge voltage and charge current. High efficiency is achieved through the use of a constant off-time step-down topology with synchronous rectification. The MAX8713 charges one to four lithium-ion (Li+) cells in series and delivers over 2A charge current—scalable with the sense resistor. The MAX8713 drives n-channel MOSFETs for improved efficiency and reduced cost. A low-offset charge-current-sense amplifier provides highaccuracy charge current with small sense resistors. The MAX8713 is available in a space-saving 24-pin 4mm x 4mm thin QFN package and operates over the extended (-40°C to +85°C) temperature range. An evaluation kit is available to reduce design time. Applications Handset Car Kits Digital Cameras PDAs and Tablet Computers Notebook Computers Portable Equipment with Rech...