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LM2755TM/NOPB PDF预览

LM2755TM/NOPB

更新时间： 2024-11-14 11:11:47
品牌 Logo 应用领域
德州仪器 - TI 驱动控制器泵接口集成电路
页数 文件大小 规格书
22页 607K
描述
采用微型 SMD 封装、具有 I2C 兼容接口的电荷泵 LED 控制器 | YFQ | 18 | -30 to 85

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中文翻译

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LM2755TM/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：VFBGA, BGA18,4X5,16/14
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：1.35数据输入模式：SERIAL
输入特性：STANDARD接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：R-PBGA-B18JESD-609代码：e1
长度：1.8015 mm湿度敏感等级：1
复用显示功能：NO功能数量：1
区段数：3端子数量：18
最高工作温度：85 °C最低工作温度：-30 °C
输出特性：CONSTANT-CURRENT封装主体材料：PLASTIC/EPOXY
封装代码：VFBGA封装等效代码：BGA18,4X5,16/14
封装形状：RECTANGULAR封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度（摄氏度）：260电源：3.6 V
认证状态：Not Qualified座面最大高度：0.675 mm
子类别：Display Drivers最大供电电压：5.5 V
最小供电电压：3 V标称供电电压：3.6 V
表面贴装：YES温度等级：OTHER
端子面层：Tin/Silver/Copper (Sn/Ag/Cu)端子形式：BALL
端子节距：0.35 mm端子位置：BOTTOM
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：1.611 mm

LM2755TM/NOPB 数据手册

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LM2755  
www.ti.com  
SNVS433D –OCTOBER 2007–REVISED APRIL 2013  
LM2755 Charge Pump LED Controller with I2C-Compatible Interface in DSBGA Package  
Check for Samples: LM2755  
1
FEATURES  
DESCRIPTION  
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.  
2
•
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  
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.  
•
•
32 Exponential Dimming Steps with 800:1  
Dimming Ratio  
Programmable Brightness Control via I2C-  
Compatible Interface  
•
•
•
Hardware Enable Pin  
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.  
Wide Input Voltage Range: 2.7V to 5.5V  
Tiny 18-bump Thin DSBGA : 1.8mm x 1.6mm x  
0.6mm  
APPLICATIONS  
The LM2755 is available in Texas Instruments' tiny  
18-bump thin DSBGA package.  
•
•
•
•
Indicator LEDs  
Keypad LED Backlight  
Display LED Backlight  
Fun-light LEDs  
TYPICAL APPLICATION CIRCUIT  
0.47 mF  
0.47 mF  
3.1 mm  
C2  
C
OUT  
C1- C1+ C2- C2+  
V
P
OUT  
IN  
C1  
1 mF  
1 mF  
C
IN  
ADR  
VIO  
SCL  
SDIO  
SYNC  
LM2755  
SCL  
R
SET  
SDIO  
D1  
D2  
D3  
HWEN  
VIO  
Dx Pins  
SYNC  
HWEN  
I
SET  
GND ADDR  
Capacitors:  
TDK C1005X5R1A105M and C1005X5R1A474M ,  
or 1 mF and 0.47 mF single capacitor equivalent  
12.5 kW  
Figure 1. Typical Application Circuit  
Figure 2. Minimum Solution Size  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007–2013, Texas Instruments Incorporated  
1234567...22

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LM2755TM/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM2755TMX/NOPB TI

类似代替

 采用微型 SMD 封装、具有 I2C 兼容接口的电荷泵 LED 控制器 | YFQ | 1

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LM2755TMX NSC

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 		Charge Pump LED Controller with I2C Compatible Interface in Micro SMD
LM2755TMX/NOPB TI

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 		采用微型 SMD 封装、具有 I2C 兼容接口的电荷泵 LED 控制器 | YFQ | 1
LM2756 NSC

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LM2756 TI

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LM2756_0712 NSC

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 		Multi-Display Inductorless LED Driver with 32 Exponential Dimming Steps in micro SMD
LM2756TM NSC

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 		Multi-Display Inductorless LED Driver with 32
LM2756TM/NOPB TI

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 		具有 32 指数调光步进、采用微型 SMD 封装的多显示无电感器 LED 驱动器 | YF
LM2756TMX NSC

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 		Multi-Display Inductorless LED Driver with 32
LM2756TMX/NOPB TI

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 		具有 32 指数调光步进、采用微型 SMD 封装的多显示无电感器 LED 驱动器 | YF
LM2757 NSC

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 		Switched Capacitor Boost Regulator with High Impedance Output in Shutdown

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