The LM3535 device is a highly integrated LED driver capable of driving 8 LEDs in parallel for large display applications. Independent LED control allows selection of a subset of the 6 main display LEDs for partial-illumination applications. In addition to the main bank of 6, the LM3535 is capable of driving an additional 2 independently controlled LEDs to support Indicator applications.
The LED driver current sinks are split into three independently controlled groups. The primary group can be configured to drive up to six LEDs for use in the main phone display. Groups B and C are provided for driving secondary displays, keypads and indicator LEDs. All of the LED current sources can be independently turned on and off providing flexibility to address different application requirements.
The LM3535 provides multi-zone ambient light sensing allowing autonomous backlight intensity control in the event of changing ambient light conditions. A PWM input is also provided to give the user the means to adjust the backlight intensity dynamically based upon the content of the display.
The LM3535 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or in pass mode. The proper gain for maintaining current regulation is chosen, based on LED forward voltage, so that efficiency is maximized over the input voltage range.
The LM3535 is available in a tiny 20-pin, 0.4-mm pitch, thin DSBGA package.
| Documentación principal | Tipo | Título | Opciones de formato | Descargar la versión más reciente en inglés | Fecha |
|---|---|---|---|---|---|
| * | Hoja de datos | LM3535 Multi-Display LED Driver With Ambient Light Sensing and Dynamic Backlight Control Compatibility datasheet (Rev. B) | PDF | HTML | 7/03/2018 | |
| Informe | Common LED Functions and LED Driver Design Considerations | 21/09/2020 | |||
| Guía de selección | Power Management Guide 2018 (Rev. R) | 25/06/2018 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| DSBGA (YFQ) | 20 | Ultra Librarian |
El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.
Si tiene alguna pregunta sobre calidad, encapsulados o pedido de productos de TI, consulte el servicio de asistencia de TI.