25-pin (YZR) package image

LP8550TLX/NOPB 現行

適用筆記本電腦的高效 LED 背光驅動器

現行 custom-reels 客製 可提供客製捲盤

定價

數量 價格
+

額外包裝數量 | 包裝類型選項 這些產品完全相同,但包裝類型不同

LP8550TLE/NOPB 現行 custom-reels 客製 可提供客製捲盤
包裝數量 | 運送業者 250 | SMALL T&R
庫存
數量 | 價格 1ku | +

品質資訊

等級 Catalog
RoHS
REACH
引腳鍍層 / 焊球材質 SNAGCU
MSL 等級 / 迴焊峰值 Level-1-260C-UNLIM
品質、可靠性
及包裝資訊

內含資訊:

  • RoHS
  • REACH
  • 產品標記
  • 引腳鍍層 / 焊球材質
  • MSL 等級 / 迴焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中的可靠性監測
檢視或下載
其他製造資訊

內含資訊:

  • 晶圓廠位置
  • 組裝地點
檢視

出口分類

*僅供參考

  • 美國 ECCN:EAR99

封裝資訊

封裝 | 針腳 DSBGA (YZR) | 25
操作溫度範圍 (°C) -30 to 85
包裝數量 | 運送業者 3,000 | LARGE T&R

LP8550 的特色

  • High-Voltage DC/DC Boost Converter with Integrated FET
    with Four Switching Frequency Options: 156/312/625/1250 kHz
  • 2.7-V to 22-V Input Voltage Range to Support 1x to 5x Cell Li-Ion
    Batteries
  • Programmable PWM Resolution
    • 8 to 13 True Bits (Steady State)
    • Additional 1 to 3 Bits Using Dithering During Brightness
      Changes
  • I2C and PWM Brightness Control
  • Automatic PWM & Current Dimming for Improved Efficiency
  • PWM output frequency and LED Current set through Resistors
  • Optional Synchronization to Display VSYNC Signal
  • Six LED Outputs with LED Fault (Short/Open) Detection
  • Low Input Voltage, Overtemperature, Overcurrent Detection,
    and Shutdown
  • Minimum Number of External Components

LP8550 的說明

The LP8550 is a white-LED driver with integrated boost converter. It has six adjustable current sinks which can be controlled by PWM input or with I2C-compatible serial interface. The boost converter has adaptive output voltage control based on the LED driver voltages. This feature minimizes the power consumption by adjusting the voltage to lowest sufficient level in all conditions.

LED outputs have 8-bit current resolution and up to 13-bit PWM resolution with additional 1- to 3-bit dithering to achieve smooth and precise brightness control. Proprietary Phase Shift PWM control is used for LED outputs to reduce peak current from the boost converter, thus making the boost capacitors smaller. The Phase Shifting scheme also eliminates audible noise.

Automatic PWM dimming at lower brightness values and current dimming at higher brightness values can be used to improve the optical efficiency. Internal EEPROM is used for storing the configuration data. This makes it possible to have minimum external component count and make the solution very small.

The LP8550 has safety features which make it possible to detect LED outputs with open or short fault — low input voltage and boost overcurrent conditions are monitored, and chip is turned off in case of these events. Thermal de-rating function prevents overheating of the device by reducing backlight brightness when set temperature has been reached.

定價

數量 價格
+

額外包裝數量 | 包裝類型選項 這些產品完全相同,但包裝類型不同

LP8550TLE/NOPB 現行 custom-reels 客製 可提供客製捲盤
包裝數量 | 運送業者 250 | SMALL T&R
庫存
數量 | 價格 1ku | +

包裝類型選項

您可依零件數量選擇不同包裝類型選項,包含完整捲盤、客製化捲盤、剪切捲帶、承載管或盤。

客製化捲盤是從一個捲盤上剪切下來的連續剪切捲帶,以維持批次和日期代碼可追溯性,依要求剪切至確切數量。依照業界標準,銅墊片會在剪切捲帶兩側連接 18 英吋前後導帶,以直接送至自動組裝機器。針對客製化捲盤訂單,TI 將酌收捲帶封裝費用。

剪切捲帶是從捲盤剪切下來的一段捲帶。TI 可能使用多條剪切捲帶或承載盒,以滿足訂單要求數量。

TI 常以盒裝或管裝、盤裝方式運送承載管裝置,視現有庫存而定。所有捲帶、管或樣本盒之封裝,皆符合公司內部靜電放電與防潮保護包裝要求。

進一步了解

可提供批次和日期代碼選擇

在購物車中加入數量,並開始結帳流程以檢視可用選項,從現有庫存中選擇批次或日期代碼。

進一步了解