High-Efficiency LED Backlight Driver for Tablets

文件：1.24063 Mbytes 頁數：63 Pages

TI

德州儀器

High-Efficiency LED Backlight Driver for Tablets

文件：1.13769 Mbytes 頁數：52 Pages

TI

德州儀器

6 通道高效 LED 背光驅動器

LP8556 器件是具有異步升壓轉換器和可由 PWM 信號或 I2C 主器件控制的六路高精度電流阱的白色 LED 驅動器。\n\n升壓轉換器采用自適應輸出電壓控制，可為 LED 驅動器在 7V 至 43V 之間設置最佳電壓。這一特性可將輸出電壓調整為滿足所有條件的最低級別，從而最大限度地減少功耗。轉換器可以在三個開關頻率下工作：312kHz、625kHz 和 1250kHz，開關頻率可以使用外部電阻器進行設置或通過 EPROM 進行預配置?？删幊剔D換率控制和擴展頻譜方案最大限度地減小了開關噪聲并提高了 EMI 性能。\n\nPWM 調光分辨率高達 15 位，可用于設定 LED 灌流。專有自適應 ? 高效直流/直流升壓轉換器，具有集成式 0.19? 功率 MOSFET 和三個開關頻率選項：312kHz、625kHz 和 1250kHz\n? 2.7V 至 36V 升壓開關輸入電壓范圍支持多節(jié)鋰離子電池（2.7V 至 20V VDD 輸入范圍）\n? 7V 至 43V 升壓開關輸出電壓范圍可支持低至 3 個、高至 12 個每通道串聯 WLED\n? 可配置通道數（1 至 6 個）\n? 每通道高達 50mA\n? PWM 和/或 I2C 亮度控制\n? 相移 PWM 模式降低了可聞噪聲\n? 自適應調光，可獲得更高的 LED 驅動光學效率\n? 可編程邊沿速率控制和擴頻方案可最大限度減少;

TI

德州儀器

絲印：L8556E0；Package：WQFN(RTW)；LP8556 High-Efficiency LED Backlight Driver For Tablets

1 Features 1? High-efficiency DC/DC boost converter with integrated 0.19-Ω power MOSFET and three switching frequency options: 312 kHz, 625 kHz, and 1250 kHz ? 2.7-V to 36-V Boost switch input voltage range supports multi-cell Li-Ion batteries (2.7-V to 20-V VDD input range) ? 7-V to 43-V

文件：1.2633 Mbytes 頁數：67 Pages

TI

德州儀器

絲?。?a target="_blank" title="Marking" href="/l8556e0/marking.html">L8556E0；Package：WQFN(RTW)；LP8556 High-Efficiency LED Backlight Driver For Tablets

1 Features 1? High-efficiency DC/DC boost converter with integrated 0.19-Ω power MOSFET and three switching frequency options: 312 kHz, 625 kHz, and 1250 kHz ? 2.7-V to 36-V Boost switch input voltage range supports multi-cell Li-Ion batteries (2.7-V to 20-V VDD input range) ? 7-V to 43-V

文件：1.2633 Mbytes 頁數：67 Pages

TI

德州儀器

絲印：L8556E0；Package：WQFN(RTW)；LP8556 High-Efficiency LED Backlight Driver For Tablets

1 Features 1? High-efficiency DC/DC boost converter with integrated 0.19-Ω power MOSFET and three switching frequency options: 312 kHz, 625 kHz, and 1250 kHz ? 2.7-V to 36-V Boost switch input voltage range supports multi-cell Li-Ion batteries (2.7-V to 20-V VDD input range) ? 7-V to 43-V

文件：1.2633 Mbytes 頁數：67 Pages

TI

德州儀器

絲?。?a target="_blank" title="Marking" href="/l8556e8/marking.html">L8556E8；Package：WQFN(RTW)；LP8556 High-Efficiency LED Backlight Driver For Tablets

1 Features 1? High-efficiency DC/DC boost converter with integrated 0.19-Ω power MOSFET and three switching frequency options: 312 kHz, 625 kHz, and 1250 kHz ? 2.7-V to 36-V Boost switch input voltage range supports multi-cell Li-Ion batteries (2.7-V to 20-V VDD input range) ? 7-V to 43-V

文件：1.2633 Mbytes 頁數：67 Pages

TI

德州儀器

絲?。?a target="_blank" title="Marking" href="/l8556e8/marking.html">L8556E8；Package：WQFN(RTW)；LP8556 High-Efficiency LED Backlight Driver For Tablets

1 Features 1? High-efficiency DC/DC boost converter with integrated 0.19-Ω power MOSFET and three switching frequency options: 312 kHz, 625 kHz, and 1250 kHz ? 2.7-V to 36-V Boost switch input voltage range supports multi-cell Li-Ion batteries (2.7-V to 20-V VDD input range) ? 7-V to 43-V

文件：1.2633 Mbytes 頁數：67 Pages

TI

德州儀器

絲印：L8556E8；Package：WQFN(RTW)；LP8556 High-Efficiency LED Backlight Driver For Tablets

1 Features 1? High-efficiency DC/DC boost converter with integrated 0.19-Ω power MOSFET and three switching frequency options: 312 kHz, 625 kHz, and 1250 kHz ? 2.7-V to 36-V Boost switch input voltage range supports multi-cell Li-Ion batteries (2.7-V to 20-V VDD input range) ? 7-V to 43-V

文件：1.2633 Mbytes 頁數：67 Pages

TI

德州儀器

絲?。?a target="_blank" title="Marking" href="/l8556e9/marking.html">L8556E9；Package：WQFN(RTW)；LP8556 High-Efficiency LED Backlight Driver For Tablets

1 Features 1? High-efficiency DC/DC boost converter with integrated 0.19-Ω power MOSFET and three switching frequency options: 312 kHz, 625 kHz, and 1250 kHz ? 2.7-V to 36-V Boost switch input voltage range supports multi-cell Li-Ion batteries (2.7-V to 20-V VDD input range) ? 7-V to 43-V

文件：1.2633 Mbytes 頁數：67 Pages

TI

德州儀器