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LM2796

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具有 3/2x 开关电容器升压的双显示白光 LED 驱动器

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LM2796

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产品详情

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)

All trademarks are the property of their respective owners.

  • 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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类型 标题 下载最新的英语版本 日期
* 数据表 LM2796 Dual-Display White LED Driver with 3/2x Switched Capacitor Boost 数据表 (Rev. A) 2013年 5月 2日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020年 9月 21日
EVM 用户指南 AN-1321 LM2796 Evaluation Board (Rev. A) 2013年 4月 30日

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评估板

LM2796TLEV — 具有 3 2x 开关电容器升压的双显示白光 LED 驱动器

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

用户指南: PDF
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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