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LM2796

ACTIVO

Controlador LED blanco de doble pantalla con aumento de capacitor conmutado 3/2 x

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LM2796

ACTIVO
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Detalles del producto

Number of channels 7 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 2.7 Vout (max) (V) 5.5 Type Capacitive Switching frequency (max) (kHz) 675 Duty cycle (max) (%) 100 LED current per channel (mA) 20 Peak efficiency (%) 80 Topology Boost Features Direct PWM Dimming Operating temperature range (°C) -30 to 85 Rating Catalog
Number of channels 7 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 2.7 Vout (max) (V) 5.5 Type Capacitive Switching frequency (max) (kHz) 675 Duty cycle (max) (%) 100 LED current per channel (mA) 20 Peak efficiency (%) 80 Topology Boost Features Direct PWM Dimming Operating temperature range (°C) -30 to 85 Rating Catalog
DSBGA (YZR) 18 5.5845 mm² 2.482 x 2.25
  • Drives up to 7 LEDs with up to 20mA Each
  • LEDs Controlled in 2 Distinct Groups, for Backlighting 2 Displays (Main LCD and Sub-LCD)
  • Excellent Current and Brightness Matching
  • High-Efficiency 3/2x Charge Pump
  • Extended Li-Ion Input: 2.7V to 5.5V
  • PWM Brightness Control: 100Hz - 1kHz
  • 18-bump Thin DSBGA Package: (2.1mm x 2.4mm x 0.6mm)

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  • Drives up to 7 LEDs with up to 20mA Each
  • LEDs Controlled in 2 Distinct Groups, for Backlighting 2 Displays (Main LCD and Sub-LCD)
  • Excellent Current and Brightness Matching
  • High-Efficiency 3/2x Charge Pump
  • Extended Li-Ion Input: 2.7V to 5.5V
  • PWM Brightness Control: 100Hz - 1kHz
  • 18-bump Thin DSBGA Package: (2.1mm x 2.4mm x 0.6mm)

All trademarks are the property of their respective owners.

The LM2796 is a charge-pump based white-LED driver that is ideal for mobile phone display backlighting. It can drive up to 7 LEDs in parallel with up to 20mA through each LED. Regulated internal current sources deliver excellent current and brightness matching in all LEDs. The LED-driver current sources are split into two independently controlled groups. The primary group (4 LEDs) can be used to backlight the main phone display. The second group (3 LEDs) can be used to backlight a secondary display or to provide other lighting features (keypad LEDs, for example). Brightness of the two groups can be adjusted independently with pulse-width modulated (PWM) digital signals.

The LM2796 works off an extended Li-Ion input voltage range (2.7V to 5.5V). Voltage boost is achieved with a high-efficiency 3/2×-gain charge pump.

The LM2796 is available in TI’s chip-scale 18-bump DSBGA package.

The LM2796 is a charge-pump based white-LED driver that is ideal for mobile phone display backlighting. It can drive up to 7 LEDs in parallel with up to 20mA through each LED. Regulated internal current sources deliver excellent current and brightness matching in all LEDs. The LED-driver current sources are split into two independently controlled groups. The primary group (4 LEDs) can be used to backlight the main phone display. The second group (3 LEDs) can be used to backlight a secondary display or to provide other lighting features (keypad LEDs, for example). Brightness of the two groups can be adjusted independently with pulse-width modulated (PWM) digital signals.

The LM2796 works off an extended Li-Ion input voltage range (2.7V to 5.5V). Voltage boost is achieved with a high-efficiency 3/2×-gain charge pump.

The LM2796 is available in TI’s chip-scale 18-bump DSBGA package.
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LM2794 ACTIVO Alimentación LED de capacitor conmutado regulado por corriente con control de brillo analógico y PWM This product is a dual-display white LED driver with 3/2x switched capacitor boost drives up to 6 LEDs. LM2794 drives up to 4 LEDs.

Documentación técnica

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* Data sheet LM2796 Dual-Display White LED Driver with 3/2x Switched Capacitor Boost datasheet (Rev. A) 02 may 2013
White paper Common LED Functions and LED Driver Design Considerations 21 sep 2020
EVM User's guide AN-1321 LM2796 Evaluation Board (Rev. A) 30 abr 2013

Diseño y desarrollo

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.

Placa de evaluación

LM2796TLEV — Controlador LED blanco de doble pantalla con aumento de capacitor conmutado 3/2 x

The LM2796 is a charge-pump based white-LED driver that is ideal for mobile phone display backlighting.

Guía del usuario: PDF
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  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
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