STMicroelectronics

ALED7709x are automotive-grade (AEC-Q100 Grade1 qualified) LED drivers combining a boost/SEPIC controller and four low-side constant-current sinkers, designed to drive strings of high brightness LEDs. The switching converter section provides the supply rail for the LED strings, whose value is constantly optimized for maximum efficiency. The boost/SEPIC controller supports the external synchronization and spread spectrum. ALED7709x can work simultaneously or exclusively in standalone mode (SAM), controlled only by PWMI signal, and in bus driven mode (BDM) through an I2C serial interface. The brightness of the four LED strings can be controlled either in global or local mode. In global mode, the ALED7709x supports a mixed PWM and analog dimming to improve the brightness range capability. Only the BDM provides full access to ALED7709x advanced features. PWM dimming frequency can be programmed changing the setting of the internal 16-bit counter, while an internal oscillator avoids the use of an external clock source. The ALED7709A is dedicated to BDM while ALED7709B is more suitable for SAM. ALED7709x implement basic protections (overvoltage, overcurrent, and thermal shutdown) as well as "Open and Short" LED fault detection, with optional channel auto-disconnect in case of fault. The devices support an optional P-channel MOSFET in series to the input. It protects the system, LED strings and channels in case of some faulty conditions, output short-to-ground or excessive input voltage transients and it also reduces the power consumption when in standby.

The ALTAIR05T-800 is a high-voltage all-primary sensing switcher intended to operate directly from the rectified mains with minimum external parts. It combines a low voltage, high performance PWM controller chip and an 800 V avalanche rugged power section in the same package.

The ANT7-T-25DV64KC antenna reference board is a ready to use PCB featuring an ST25DV64KC connected to a 14 mm x 14 mm, 13.56 MHz etched RF double layer antenna on one side, and to an I²C bus on the other side. This evaluation board allows system designers to evaluate the ST25DV64KC performance and capabilities, and to get started with their design. To demonstrate the energy harvesting function, the ANT7-T-25DV64KC can be used in conjunction with any ST25R NFC reader evaluation board. The board design and the Gerber files can be downloaded from www.st.com. If externally powered, supply must be safety extra-low voltage (SELV), according to EN60950-1 (< 5 V, < 15 W). The power supply is classified ES1 (electrical energy source class 1), PS1 (electrical power source class 1), according to EN62368-1.

The ANT7-T-ST25DV04K board is the reference programmable device required for NFC reader certification, according to Book 25 of Zhaga Consortium. The antenna reference board is a ready-to-use PCB, featuring an ST25DV04K dual interface EEPROM connected to a 14 mm x 14 mm, 13.56 MHz etched RF double layer antenna on one side, and to an I2C bus on the other side. This demonstration board allows system designers to evaluate the ST25DV04K performance and capabilities, and to get started with their design. To demonstrate the energy harvesting function, the ANT7-T-ST25DV04K can be used together with the ST DEMO-CR95HF-A board. The board design and the Gerber files can be downloaded from www.st.com. If externally powered, supply must be safety extra-low voltage (SELV) according to EN60950-1 (< 5 V, < 15 W). The power supply must be classified ES1 (electrical energy source class 1), PS1 (electrical power source class 1) according to EN62368-1.