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LM2794TL/NOPB PDF预览

LM2794TL/NOPB

更新时间: 2024-09-26 11:12:35
品牌 Logo 应用领域
德州仪器 - TI 开关电容器
页数 文件大小 规格书
23页 723K
描述
具有模拟和 PWM 亮度控制功能的电流调节开关电容器 LED 电源 | YPA | 14 | -30 to 85

LM2794TL/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,
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:1 week
风险等级:1.01模拟集成电路 - 其他类型:SWITCHED CAPACITOR REGULATOR
最大输入电压:5.5 V最小输入电压:2.7 V
JESD-30 代码:R-XBGA-B14JESD-609代码:e1
湿度敏感等级:1功能数量:1
最高工作温度:85 °C最低工作温度:-30 °C
最大输出电压:5.5 V最小输出电压:2.7 V
封装主体材料:UNSPECIFIED封装代码:VFBGA
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表面贴装:YES
切换器配置:BOOST最大切换频率:675 kHz
温度等级:OTHER端子面层:Tin/Silver/Copper (Sn/Ag/Cu)
端子形式:BALL端子位置:BOTTOM
处于峰值回流温度下的最长时间:NOT SPECIFIED

LM2794TL/NOPB 数据手册

 浏览型号LM2794TL/NOPB的Datasheet PDF文件第2页浏览型号LM2794TL/NOPB的Datasheet PDF文件第3页浏览型号LM2794TL/NOPB的Datasheet PDF文件第4页浏览型号LM2794TL/NOPB的Datasheet PDF文件第5页浏览型号LM2794TL/NOPB的Datasheet PDF文件第6页浏览型号LM2794TL/NOPB的Datasheet PDF文件第7页 
LM2794, LM2795  
www.ti.com  
SNVS168L JANUARY 2002REVISED MAY 2013  
LM2794 /LM2795 Current Regulated Switched Capacitor LED Supply with Analog and  
PWM Brightness Control  
Check for Samples: LM2794, LM2795  
1
FEATURES  
APPLICATIONS  
2
Regulated Current Sources with ±0.5%  
Matching between any Two Outputs  
White LED Display Backlights  
White LED Keypad Backlights  
High Efficiency 3/2 Boost Function  
Drives One, Two, Three or four White LEDs  
2.7V to 5.5V Input Voltage  
1-Cell Li-Ion Battery-Operated Equipment  
Including PDAs, Hand-Held PCs, Cellular  
Phones  
Up to 80mA Output Current  
DESCRIPTION  
Analog Brightness Control  
The LM2794/95 is a fractional CMOS charge-pump  
that provides four regulated current sources. It  
accepts an input voltage range from 2.7V to 5.5V and  
maintains a constant current determined by an  
external sense resistor.  
Active-Low or High Shutdown Input ('94/95)  
Very Small Solution Size and no Inductor  
2.3µA (typ.) Shutdown Current  
325kHz Switching Frequency (min.)  
The LM2794/5 delivers up to 80mA of load current to  
accommodate four White LEDs. The switching  
frequency is 325kHz. (min.) to keep the conducted  
noise spectrum away from sensitive frequencies  
within portable RF devices.  
Constant Frequency Generates Predictable  
Noise Spectrum  
Thin DSBGA Package: 2.08mm X 2.403mm X  
0.600mm High  
Basic Application Circuit  
POUT  
VIN  
CIN  
CHOLD  
1mF  
1mF  
C1+  
D1  
C1  
C2  
1mF  
1mF  
D2  
D3  
C1-  
C2+  
LED1  
LM2794/95  
LED2  
LED3  
D4  
C2-  
SD  
LED4  
ISET  
BRGT  
GND  
RSET  
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 © 2002–2013, Texas Instruments Incorporated  

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