首頁 電源管理 LCD 及 OLED 顯示器電源和驅動器
首頁
電源管理
LCD 及 OLED 顯示器電源和驅動器

TPS65145

現行

4 通道 LCD 偏壓，具完全整合正充電泵、3.3V LDO 控制器、0.96A 最小升壓 Ilim 和故障偵測

立即訂購
產品規格表

TPS65145

現行
產品規格表 立即訂購

產品詳細資料

Display type LCD unipolar IC integration LCD bias Vin (min) (V) 2.7 Vin (max) (V) 5.5 Applications 13 to 21 inches, 7 to 13 inches Source driver voltage (min) (V) 5 Source driver voltage (max) (V) 15 Level shifter/scan driver (Ch) 0 V_POS (max) (V) 30 V_NEG (max) (V) -2 Topology Boost Rating Catalog Operating temperature range (°C) -40 to 85
Display type LCD unipolar IC integration LCD bias Vin (min) (V) 2.7 Vin (max) (V) 5.5 Applications 13 to 21 inches, 7 to 13 inches Source driver voltage (min) (V) 5 Source driver voltage (max) (V) 15 Level shifter/scan driver (Ch) 0 V_POS (max) (V) 30 V_NEG (max) (V) -2 Topology Boost Rating Catalog Operating temperature range (°C) -40 to 85
HTSSOP (PWP) 24 49.92 mm² 7.8 x 6.4 VQFN (RGE) 24 16 mm² 4 x 4
  • 2.7-V to 5.8-V Input Voltage Range
  • 1.6-MHz Fixed Switching Frequency
  • 3 Independent Adjustable Outputs
  • Main Output up to 15 V With <1% Typical Output
    Voltage Accuracy
  • Virtual Synchronous Converter Technology
  • Negative Regulated Charge Pump Driver VO2
  • Positive Charge Pump Converter VO3
  • Auxiliary 3.3-V Linear Regulator Controller
  • Internal Soft Start
  • Internal Power-On Sequencing
  • Fault Detection of All Outputs (TPS65140 and
    TPS65145)
  • No Fault Detection (TPS65141)
  • Thermal Shutdown
  • System Power Good
  • Available in 24-Pin HTSSOP and 24-Pin VQFN
    PowerPAD™ Packages
  • 2.7-V to 5.8-V Input Voltage Range
  • 1.6-MHz Fixed Switching Frequency
  • 3 Independent Adjustable Outputs
  • Main Output up to 15 V With <1% Typical Output
    Voltage Accuracy
  • Virtual Synchronous Converter Technology
  • Negative Regulated Charge Pump Driver VO2
  • Positive Charge Pump Converter VO3
  • Auxiliary 3.3-V Linear Regulator Controller
  • Internal Soft Start
  • Internal Power-On Sequencing
  • Fault Detection of All Outputs (TPS65140 and
    TPS65145)
  • No Fault Detection (TPS65141)
  • Thermal Shutdown
  • System Power Good
  • Available in 24-Pin HTSSOP and 24-Pin VQFN
    PowerPAD™ Packages

The TPS6514x series offers a compact and small power supply solution to provide all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only.

The main output VO1 is a 1.6-MHz fixed frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65140 and TPS65141 has a typical switch current limit of 2.3 A and the TPS65145 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler or tripler provides the positive LCD gate drive voltage. An externally adjustable negative charge pump provides the negative gate drive voltage. Due to the high 1.6-MHz switching frequency of the charge pumps, inexpensive and small 220-nF capacitors can be used.

Additionally, the TPS6514x series has a system power good output to indicate when all supply rails are acceptable. For LCD panels powered by 5 V the device has a linear regulator controller using an external transistor to provide a regulated 3.3-V output for the digital circuits. For maximum safety, the TPS65140 and TPS65145 goes into shutdown as soon as one of the outputs is out of regulation. The device can be enabled again by toggling the input or the enable (EN) pin to GND. The TPS65141 does not enter shutdown when one of its outputs is below its power good threshold.

The TPS6514x series offers a compact and small power supply solution to provide all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only.

The main output VO1 is a 1.6-MHz fixed frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65140 and TPS65141 has a typical switch current limit of 2.3 A and the TPS65145 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler or tripler provides the positive LCD gate drive voltage. An externally adjustable negative charge pump provides the negative gate drive voltage. Due to the high 1.6-MHz switching frequency of the charge pumps, inexpensive and small 220-nF capacitors can be used.

Additionally, the TPS6514x series has a system power good output to indicate when all supply rails are acceptable. For LCD panels powered by 5 V the device has a linear regulator controller using an external transistor to provide a regulated 3.3-V output for the digital circuits. For maximum safety, the TPS65140 and TPS65145 goes into shutdown as soon as one of the outputs is out of regulation. The device can be enabled again by toggling the input or the enable (EN) pin to GND. The TPS65141 does not enter shutdown when one of its outputs is below its power good threshold.
filter 尋找其它 LCD 及 OLED 顯示器電源和驅動器
下載

您可能會感興趣的類似產品

open-in-new 比較替代產品
功能與所比較的裝置相似
TPS65150 現行 具整合式 VCOM 緩衝器的通用小型 LCD 偏壓電源 This product has the same features, adds a Vcom, and has no LDO.

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 1
類型 標題 日期
* Data sheet TPS6514x Triple Output LCD Supply With Linear Regulator and Power Good datasheet (Rev. F) PDF | HTML 2016年 6月 29日

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​