Summit Microelectronics has added the SMB346 and SMB347 to its programmable lithium-ion battery charger IC family. The ICs deliver up to 2.5A charge and system current with dual I/O CurrentPath technology for operation with a dead or missing battery. Dual inputs accept both USB and AC/DC with automatic selection and support for battery charging standards such as USB 2.0 specification, USB on-the-go supplement, USB battery charging specification 1.2, IEEE1725 standard, and Chinese USB charging specification. The ICs have a 3MHz switch-mode DC/DC design with less external components and feature the company's TurboCharge, patent-pending technology to enable fast charging and low thermal dissipation, says the company. They are suitable for smartphones, tablets, digital still cameras, digital camcorders, wireless routers, portable media and MP3 players, portable GPS navigation, and portable game consoles and controllers. The ICs have an automatic power source detection, and integrated low-battery voltage detector. A set of programmable and safety features are also integrated to support the JEITA, IEEE1725 and JISC8714 standards. The ICs operate at input voltages of 3.7 to 6.2V and can withstand continuous input over-voltage of up to +20V. They are available in 2.46x2.96mm, 30ball, lead-free chip-scale packages and operate between -30 and +85°C.
