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LM3500TL-21/NOPB PDF预览

LM3500TL-21/NOPB

更新时间： 2024-02-23 02:50:51
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动接口集成电路
页数 文件大小 规格书
20页 724K
描述
IC LED DISPLAY DRIVER, BGA8, MICRO, SMD-8, Display Driver

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LM3500TL-21/NOPB 技术参数

是否Rohs认证： 符合生命周期：Transferred
包装说明：VFBGA,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：7.54接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：S-XBGA-B8JESD-609代码：e1
长度：1.92 mm湿度敏感等级：1
复用显示功能：NO功能数量：1
区段数：1端子数量：8
最高工作温度：85 °C最低工作温度：-10 °C
封装主体材料：UNSPECIFIED封装代码：VFBGA
封装形状：SQUARE封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：0.675 mm最大供电电压：7 V
最小供电电压：2.7 V标称供电电压：3 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：0.5 mm端子位置：BOTTOM
处于峰值回流温度下的最长时间：40宽度：1.92 mm
Base Number Matches：1

LM3500TL-21/NOPB 数据手册

 浏览型号LM3500TL-21/NOPB的Datasheet PDF文件第2页浏览型号LM3500TL-21/NOPB的Datasheet PDF文件第3页浏览型号LM3500TL-21/NOPB的Datasheet PDF文件第4页浏览型号LM3500TL-21/NOPB的Datasheet PDF文件第5页浏览型号LM3500TL-21/NOPB的Datasheet PDF文件第6页浏览型号LM3500TL-21/NOPB的Datasheet PDF文件第7页 
February 2005  
LM3500  
Synchronous Step-up DC/DC Converter for White LED  
Applications  
General Description  
Features  
The LM3500 is a fixed-frequency step-up DC/DC converter  
that is ideal for driving white LEDs for display backlighting and  
other lighting functions. With fully intergrated synchronous  
switching (no external schottky diode required) and a low  
feedback voltage (500mV), power efficiency of the LM3500  
circuit has been optimized for lighting applications in wireless  
phones and other portable products (single cell Li-Ion or 3-  
cell NiMH battery supplies). The LM3500 operates with a fixed  
1MHz switching frequency. When used with ceramic input  
and output capacitors, the LM3500 provides a small, low-  
noise, low-cost solution.  
Synchronous rectification, high efficiency and no external  
schottky diode required  
Uses small surface mount components  
■
■
■
Can drive 2-5 white LEDs in series  
(may function with more low-VF LEDs)  
2.7V to 7V input range  
■
■
Internal output over-voltage protection (OVP) circuitry,  
with no external zener diode required  
LM3500-16: 15.5V OVP; LM3500-21: 20.5V OVP.  
True shutdown isolation  
■
■
■
Input undervoltage lockout  
Two LM3500 options are available with different output volt-  
age capabilities. The LM3500-21 has a maximum output  
voltage of 21V and is typically suited for driving 4 or 5 white  
LEDs in series. The LM3500-16 has a maximum output volt-  
age of 16V and is typically suited for driving 3 or 4 white LEDs  
in series (maximum number of series LEDs dependent on  
LED forward voltage). If the primary white LED network  
should be disconnected, the LM3500 uses internal protection  
circuitry on the output to prevent a destructive over-voltage  
event.  
Requires only small ceramic capacitors at the input and  
output  
Thermal Shutdown  
■
■
■
0.1µA shutdown current  
Small 8-bump thin micro SMD package  
Applications  
LCD Bias Supplies  
■
■
■
■
A single external resistor is used to set the maximum LED  
current in LED-drive applications. The LED current can easily  
be adjusted using a pulse width modulated (PWM) signal on  
the shutdown pin. In shutdown, the LM3500 completely dis-  
connects the input from output, creating total isolation and  
preventing any leakage currents from trickling into the LEDs.  
White LED Backlighting  
Handheld Devices  
Digital Cameras  
Portable Applications  
■
Typical Application Circuit  
20065701  
© 2007 National Semiconductor Corporation  
200657  
www.national.com  
1234567...20

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与LM3500TL-21/NOPB相关器件

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LM3500TLX-16 NSC Synchronous Step-up DC/DC Converter for White LED

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LM3500TLX-16/NOPB TI Synchronous Step-up DC/DC Converter for White LED Applications 8-DSBGA -40 to 85

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LM3500TLX-21 NSC Synchronous Step-up DC/DC Converter for White LED

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LM3500TLX-21/NOPB TI Synchronous Step-up DC/DC Converter for White LED Applications 8-DSBGA -40 to 85

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LM3500TLX-21/NOPB NSC IC LED DISPLAY DRIVER, BGA8, MICRO, SMD-8, Display Driver

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