The TPS61042 is a high frequency boost converter with constant current output that drives white LEDs or similar. The LED current is set with the external sense resistor (RS) and is directly regulated by the feedback pin (FB) that regulates the voltage across the sense resistor RS to 252 mV (typ). To control LED brightness, the LED current can be pulsed by applying a PWM (pulse width modulated) signal with a frequency range of 100 Hz to 50 kHz to the control pin (CTRL). To allow higher flexibility, the device can be configured where the brightness can be controlled by an analog signal as well, as described in the application information section. To avoid possible leakage currents through the LEDs during shutdown, the control pin (CTRL) disables the device and disconnects the LEDs from ground. For maximum safety during operation, the output has integrated overvoltage protection that prevents damage to the device in case of a high impedance output (e.g. faulty LED).
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The TPS61042EVM-226 is an evaluation tool for the TPS61042 inductive boost converter in 3x3mm2 QFN that can supply voltages up to 28V from input voltages in the range of 1.8V to 6V. The EVM is configured to supply a 20-mA bias current to 4 on-board white LEDs. The EVM can also be used to evaluate (...)
This reference design will demonstrate several Ethernet- and LCD-enabled applications such as remote sensor monitoring, Ethernet configuration via web-based and LCD dashboards and aware applications that interface with weather websites.
Este diseño implementa una cámara de red con un panel de visualización QVGA y un servidor web integrado para supervisión remota. Con una memoria de 250 KB para el servidor web, el microcontrolador TM4C129x dispone de memoria suficiente para otras personalizaciones.
This reference design demonstrates how to implement and interface SDRAM Memory to the performance microcontroller TM4C129XNCZAD. The implementation is made possible by using the EPI Interface of the Microcontroller to interface a 256Mbit SDRAM at 60MHz which allows developers to implement (...)
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| VSON (DRB) | 8 | Ultra Librarian |
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