LM3535TME - 8-Output LED Backlight Driver | Texas Instruments
N.º de pieza: LM3535TME ✓ ActivoLM3535TME Descripción general
An LED backlight driver is a specialized power-management and display-control IC that converts an available supply into regulated LED current. In the product hierarchy, an LED driver sits within LED Drivers, Power Management, and integrated circuits. Multi-display implementations must reproduce the desired panel brightness across multiple strings while providing a dimming mechanism and, when available, ambient-light response. The LM3535TME addresses these functions with eight parallel outputs and a switched-capacitor charge-pump topology.
The verified feature set identifies eight constant-current LED outputs, PWM dimming, a 25 mA output-current rating, and a 20-DSBGA package. Driving eight LEDs in parallel makes the device relevant to compact LCD backlight systems where each output can correspond to a display LED group. PWM dimming provides a direct control method for adjusting brightness, while ambient-light sensing compatibility enables dynamic backlight-control strategies rather than fixed illumination.
The charge-pump architecture is central to this part's operation. A switched-capacitor charge pump transfers energy through switched capacitors and can support LED backlighting where an inductive converter would add components. The verified data identifies the topology but does not provide a verified switching frequency, voltage range, output-voltage range, efficiency, or accuracy, so those values must be confirmed from the manufacturer datasheet before design release.
Typical applications include multi-display LCD backlighting, portable electronics, automotive-style instrument clusters, and other systems requiring eight LED outputs with programmable brightness. Dynamic backlight operation is particularly relevant where an external light sensor and control policy can reduce illumination in dark environments and increase it under bright ambient conditions.
PCB design should preserve the compact 20-DSBGA footprint and provide clean routing between the driver, LEDs, ambient-light interface, and control signals. Verify the official pinout and recommended external components before layout because the supplied verified data identifies the package but does not expose individual ball assignments.
This page combines verified source data with transparent data-gap markers, application guidance, purchasing context, and replacement research. It does not invent missing electrical limits or pad a substitute list with parts that have not been verified as pin-to-pin and package compatible.
Alternativas directas para LM3535TME — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
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Solicitar alternativasLM3535TME Valores máximos y características eléctricas
| Product Type | LED driver IC |
| Número de salidas | 8 outputs |
| Output Current | 25 mA |
| Current Regulation | Constant-current |
| Dimming Method | PWM dimming |
| Converter Topology | Switched-capacitor charge pump |
| Supported LED Configuration | 8 LEDs in parallel |
| Ambient Light Sensing | Supported |
| Backlight Control | Dynamic backlight control compatible |
| Encapsulado | 20-DSBGA, 2.04 mm x 1.78 mm |
| Estado RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | unknown |
Guía de configuración de pines de LM3535TME 20-dsbga, 2.04 mm x 1.78 mm
Configuración de pines para LM3535TME (encapsulado 20-dsbga, 2.04 mm x 1.78 mm). Este dispositivo de potencia presenta terminales de puerta, drenador y fuente. Para encapsulados no polarizados, consulte la hoja de datos del fabricante para conocer la orientación exacta del pin 1 y los detalles del footprint. Las aplicaciones habituales incluyen el diseño de fuentes de alimentación, el accionamiento de motores y la conmutación de cargas.
No hay datos detallados de patillaje disponibles para LM3535TME.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
LM3535TME es adecuado para 6 aplicacións: Multi-Display LCD Backlighting, Portable Electronic Display, Automotive Instrument Display, Tablet Backlight Control, Industrial HMI Panel, Smart Display Backlight.
Multi-Display LCD Backlighting
The LM3535TME fits compact multi-display LCD backlight systems that require eight constant-current LED outputs. Its verified 25 mA output rating and support for eight parallel LEDs provide a direct architectural match for panel illumination. Place the device close to the LED routing and use the PWM input to adjust brightness without changing the basic output configuration. The compact 20-DSBGA, measuring 2.04 mm by 1.78 mm, helps conserve board area, although designers must verify the official ball map and external component requirements before layout.
Recomendado
Portable Electronic Display
The LM3535TME is applicable to portable-device displays where compactness, controlled LED current, and adjustable brightness are important. Eight parallel outputs can support a display illumination arrangement, while PWM dimming allows the system controller to respond to user settings or ambient illumination. Its charge-pump topology is relevant to space-constrained portable power designs. Before adoption, verify the input range, efficiency, battery-voltage tolerance, and thermal behavior because those figures were not present in the supplied verified data.
Recomendado
Automotive Instrument Display
The LM3535TME's eight constant-current LED outputs and PWM dimming make it a candidate for multi-zone instrument-cluster or infotainment display lighting. Dynamic backlight-control compatibility can help a vehicle controller reduce or increase panel illumination according to ambient conditions. This is only a functional candidate: the verified data does not establish AEC-Q100 qualification, automotive temperature limits, load-dump tolerance, or lifetime. Those requirements must be confirmed before using the part in a safety-related automotive design.
Recomendado
Tablet Backlight Control
The LM3535TME can be evaluated for tablet or small-panel backlights where eight parallel LED groups and PWM brightness adjustment align with the system architecture. Its small 20-DSBGA footprint supports dense portable hardware, and ambient light sensing compatibility is useful for automatic screen illumination. The primary design trade-off is that the verified source does not provide efficiency, supply range, or thermal data, which are critical in battery-powered products. Prototype testing should therefore precede commitment to a high-volume portable design.
Recomendado
Industrial HMI Panel
An industrial human-machine interface can use the LM3535TME when its display employs eight LED backlight outputs and benefits from adjustable brightness. PWM dimming supports manual operator controls or automatic ambient-response logic, while the charge-pump topology consolidates LED drive functions into a small IC. For industrial deployment, verify operating-temperature limits, output-current tolerance, ripple behavior, and lifecycle documentation; none of those electrical limits were confirmed in the supplied data. Do not assume industrial suitability from the application description alone.
Recomendado
Smart Display Backlight
The LM3535TME is relevant to smart displays that vary brightness according to ambient light or user preference. The verified feature set combines eight constant-current outputs, PWM dimming, ambient light sensing, and dynamic backlight-control compatibility, allowing a controller to implement responsive panel illumination. The integration reduces the number of dedicated driver functions in the display subsystem. Firmware should define PWM behavior and sensor thresholds, while the hardware designer must verify exact logic pins and timing from the official datasheet before connecting the sensor and display LEDs.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para LM3535TME — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Notas de diseño
The verified LM3535TME package is a compact 20-DSBGA measuring 2.04 mm by 1.78 mm. Before routing, obtain the official ball map and land pattern because the supplied sources do not provide individual ball assignments. Reserve short, direct routes between the charge-pump support network, LED outputs, ambient-light interface, and control pins. Verify exposed-ball or thermal requirements from the package drawing rather than inferring them from package dimensions.
Use constant-current LED channels only with the external component values and operating limits specified by the manufacturer. The verified output-current reference is 25 mA, but the source set does not identify per-channel tolerance, compliance-voltage limits, channel-to-channel matching, or the permissible LED forward-voltage range. Validate those values across the complete battery, vehicle, or industrial supply range before committing to the LED strings.
A switched-capacitor charge pump can introduce periodic ripple and coupling into nearby circuitry. Keep LED and charge-pump current loops compact, follow the manufacturer's recommended capacitor connections, and observe sensitive display or sensing traces. The supplied evidence does not provide switching frequency, efficiency, or ripple limits, so EMC and image-quality risk must be evaluated with oscilloscope measurements on the final PCB rather than assumed from topology alone.
Información de cumplimiento
The supplied verified sources do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
