LM2755

現行

具 I2C 相容介面接口並採用 Micro SMD 的充電泵 LED 控制器

alarm通知

立即訂購

產品規格表

document-pdfAcrobat LM2755 Charge Pump LED Controller with I2C Compatible Interface in DSBGA Package datasheet (Rev. D) (英文)

現在提供此產品的更新版本

open-in-new

比較替代產品

功能與所比較的裝置相似

LP5810

現行

具備 I2C 和自動動畫控制的 4 通道 RGBW LED 驅動器 Synchronous boost, lower IQ and smaller size

產品詳細資料

Number of channels

3

LED current per channel (mA)

25

LED configuration

Parallel

Program memory

No

Topology

Charge pump, Current Sink

Programmable ramp control

Yes

Vin (min) (V)

2.7

Vin (max) (V)

5.5

Iout (max) (A)

0.09

Features

Constant current, Current control, I2C control, Programmable lighting engines

Iq (typ) (mA)

1

Shutdown current (ISD) (typ) (µA)

5

Operating temperature range (°C)

-30 to 85

Rating

Catalog

Number of channels

3

LED current per channel (mA)

25

LED configuration

Parallel

Program memory

No

Topology

Charge pump, Current Sink

Programmable ramp control

Yes

Vin (min) (V)

2.7

Vin (max) (V)

5.5

Iout (max) (A)

0.09

Features

Constant current, Current control, I2C control, Programmable lighting engines

Iq (typ) (mA)

1

Shutdown current (ISD) (typ) (µA)

5

Operating temperature range (°C)

-30 to 85

Rating

Catalog

DSBGA (YFQ)

18

3.57408 mm² 1.9856 x 1.8

90% Peak Efficiency
Total solution size < 13mm²
No Inductor Required: Only 4 Inexpensive Ceramic Caps
3 Independently Controlled Constant Current Outputs
Programmable Trapezoidal Dimming Waveform on Each Output
Programmable Timing Control Via Internal Registers and External Clock Synchronization Input
32 Exponential Dimming Steps with 800:1 Dimming Ratio
Programmable Brightness Control via I²C-Compatible Interface
Hardware Enable Pin
Wide Input Voltage Range: 2.7V to 5.5V
Tiny 18-bump Thin DSBGA : 1.8mm x 1.6mm x 0.6mm

All trademarks are the property of their respective owners.

90% Peak Efficiency
Total solution size < 13mm²
No Inductor Required: Only 4 Inexpensive Ceramic Caps
3 Independently Controlled Constant Current Outputs
Programmable Trapezoidal Dimming Waveform on Each Output
Programmable Timing Control Via Internal Registers and External Clock Synchronization Input
32 Exponential Dimming Steps with 800:1 Dimming Ratio
Programmable Brightness Control via I²C-Compatible Interface
Hardware Enable Pin
Wide Input Voltage Range: 2.7V to 5.5V
Tiny 18-bump Thin DSBGA : 1.8mm x 1.6mm x 0.6mm

All trademarks are the property of their respective owners.

The LM2755 is a charge-pump-based, constant current LED driver capable of driving 3 LEDs with a total output current up to 90mA. The diode current waveforms of each LED can be trapezoidal with timing and level parameters (rise time, fall time, high level, low level, delay, high time, low time) programmed via an I²C-compatible interface. The 32 brightness levels found on the LM2755 are exponentially spaced (as opposed to linearly spaced) to better match the response of the human eye to changing brightness levels.

The device requires only four small and low-cost ceramic capacitors. The LM2755 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or in a gain of 1. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage requirements.

The pre-regulation scheme used by the LM2755 is optimized to ensure low conducted noise on the input. An internal soft-start circuitry eliminates high inrush current at start-up. The LM2755 consumes 3µA (typ.) of supply current in shut-down.

The LM2755 is available in Texas Instruments' tiny 18-bump thin DSBGA package.

The LM2755 is a charge-pump-based, constant current LED driver capable of driving 3 LEDs with a total output current up to 90mA. The diode current waveforms of each LED can be trapezoidal with timing and level parameters (rise time, fall time, high level, low level, delay, high time, low time) programmed via an I²C-compatible interface. The 32 brightness levels found on the LM2755 are exponentially spaced (as opposed to linearly spaced) to better match the response of the human eye to changing brightness levels.

The device requires only four small and low-cost ceramic capacitors. The LM2755 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or in a gain of 1. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage requirements.

The pre-regulation scheme used by the LM2755 is optimized to ensure low conducted noise on the input. An internal soft-start circuitry eliminates high inrush current at start-up. The LM2755 consumes 3µA (typ.) of supply current in shut-down.

The LM2755 is available in Texas Instruments' tiny 18-bump thin DSBGA package.

filter

尋找其它 RGB LED 驅動器

下載觀看有字幕稿的影片影片

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 5

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)

要求

封裝	針腳	CAD 符號、佔位空間與 3D 模型
DSBGA (YFQ)	18	Ultra Librarian

適用 TI 的評估品項標準條款與條件。

	類型	標題	日期
*	Data sheet	LM2755 Charge Pump LED Controller with I2C Compatible Interface in DSBGA Package datasheet (Rev. D)	2013年 3月 7日
	White paper	Common LED Functions and LED Driver Design Considerations	2020年 9月 21日
	Application note	How to Select a RGB LED Driver	2019年 8月 8日
	Application note	Designing Energy-Efficient Handheld Illum Solutions (Rev. A)	2013年 4月 30日
	Application note	LM2755 Charge Pump LED Controller with I2C Compatible Interface in SMD (Rev. A)	2013年 4月 30日

LM2755

具 I2C 相容介面接口並採用 Micro SMD 的充電泵 LED 控制器

現在提供此產品的更新版本

功能與所比較的裝置相似

LM2755

產品詳細資料

技術文件

設計與開發

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

訂購與品質

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

影片系列

影片