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LM2796

現行

具 3/2x 切換式電容器升壓的雙顯示白色 LED 驅動器

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產品規格表

LM2796

現行
產品規格表 立即訂購

產品詳細資料

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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LM2794 現行 具類比和 PWM 亮度控制的電流穩壓切換式電容器 LED 電源 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.

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類型 標題 日期
* Data sheet LM2796 Dual-Display White LED Driver with 3/2x Switched Capacitor Boost datasheet (Rev. A) 2013年 5月 2日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
EVM User's guide AN-1321 LM2796 Evaluation Board (Rev. A) 2013年 4月 30日

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開發板

LM2796TLEV — 具有 3 2x 開關電容器升壓的雙顯示白色 LED 驅動器

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

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DSBGA (YZR) 18 Ultra Librarian
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