To support a wide array of applications, the LTC4121 constant-current/constant-voltage, 400-mA charger for Lithium-Ion, LiFePO4, and lead-acid batteries accepts a 4.4V to 40V input. Its programmable 3.5V to 18V battery charge voltage range with±1% accuracy makes the device suitable for a variety of battery chemistries. The fixed output float voltage version, LTC4121-4.2, supports 1S lithium-ion battery packs. Additionally, the synchronous architecture enables charging efficiency up to 94% as well as low dropout start-up and operation. Available in a 16-pin 3 mm x 3 mm x 0.75 mm QFN package with exposed pad, pricing starts at $2.60 each/1,000. For more information, visit http://www.linear.com/product/LTC4121
Linear Technology Corp.