Programmable Battery Charger
08.04.2009
Summit Introduces Industry’s Smallest Programmable 500mA Battery Charger
Summit Microelectronics has introduced a new addition to its family of programmable battery charger integrated circuits (IC) for single-cell Li-Ion and Li-Polymer powered systems.
The SMB239 is the industry’s smallest charger IC and solution, enabling slimmer industrial designs for portable consumer electronics. The device’s battery charging parameters are fully programmable via the I2C interface and nonvolatile memory, allowing easy system design, without any hardware changes. Additionally, a class-leading set of safety features are incorporated, offering the highest system reliability and protection and eliminating the need for expensive, external safety components.
Applications
The SMB239 is ideal for a wide range of portable devices, including Bluetooth™ mono/stereo headsets and other accessories, mobile phones, digital cameras, portable music players, portable GPS navigation, and handheld medical equipment. The features, size and integration of the SMB239 make it especially suited for devices that include a USB interface because it allows a tiny, low-cost, industry-standard micro USB connector to be the primary data and power/charging interface. The SMB239 operates with an input range from +4.35V to +6.5V input and safely withstands continuous input over-voltage up to +10V (non-operating), while protecting downstream circuitry. Ensuring long battery life when not connected to a DC power source, the device’s reverse leakage current is less than 2microA.
The SMB239 is offered in a tiny 2.1mm x 1.3mm, 8-ball, lead-free chip-scale (CSP) package (0.5mm ball pitch) with an operating temperature range of –30C to +85C.
Design Software and Programmer for Prototype Development
To speed user product development, Summit offers customers the SMB239EV companion evaluation board and a graphical user interface (GUI) software so designers can quickly see the features and benefits and design a prototype battery charging solution with the SMB239. This is a complete development tool that lets designers easily manipulate the characteristics of their systems. The SMB239EV design kit includes menu-driven Microsoft Windows (R) GUI software to automate programming tasks and also includes all necessary hardware to interface to the USB port of a laptop or PC.
Once a user completes design and prototyping, the SMB239EV automatically generates a HEX data file that can be transmitted to Summit for review and approval. Summit then assigns a unique customer identification code to the HEX file and programs the customer’s production devices prior to final electrical test operations. This ensures that the device will operate properly in the end application.
SMB239 Fact Sheet | For samples contact
