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LM3550SP/NOPB PDF预览

LM3550SP/NOPB

更新时间： 2024-09-30 11:08:07
品牌 Logo 应用领域
德州仪器 - TI 摄像机驱动闪光灯接口集成电路驱动器
页数 文件大小 规格书
29页 1959K
描述
具有自动 Vf 和 ESR 检测功能的 LED 闪光灯驱动器，适用于移动摄像机系统 | NHU | 20 | -30 to 85

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LM3550SP/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：QCCN, LCC20,.09X.13,16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：8 weeks
风险等级：1.65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-PQCC-N20JESD-609代码：e3
长度：3 mm湿度敏感等级：3
复用显示功能：NO功能数量：1
区段数：4端子数量：20
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：QCCN封装等效代码：LCC20,.09X.13,16
封装形状：RECTANGULAR封装形式：CHIP CARRIER
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：0.6 mm
子类别：Display Drivers最大压摆率：0.24 mA
最大供电电压：5.5 V最小供电电压：2.7 V
标称供电电压：3.6 V表面贴装：YES
温度等级：OTHER端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.4 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：2.5 mmBase Number Matches：1

LM3550SP/NOPB 数据手册

 浏览型号LM3550SP/NOPB的Datasheet PDF文件第2页浏览型号LM3550SP/NOPB的Datasheet PDF文件第3页浏览型号LM3550SP/NOPB的Datasheet PDF文件第4页浏览型号LM3550SP/NOPB的Datasheet PDF文件第5页浏览型号LM3550SP/NOPB的Datasheet PDF文件第6页浏览型号LM3550SP/NOPB的Datasheet PDF文件第7页 
February 29, 2012  
LM3550  
5A Flash LED Driver with Automatic VLED and ESR  
Detection for Mobile Camera Systems  
General Description  
Features  
LM3550 is a low-noise, switched-capacitor DC/DC converter  
designed to operate as a current-limited and adjustable (up  
to 5.3V) super-capacitor charger. LM3550 features user-se-  
lectable super-capacitor charge-termination voltages and an  
optimal charge-termination mode that maximizes flash-ener-  
gy efficiency by accounting for flash element losses. Addi-  
tionally, the device provides one adjustable constant current  
output (up to 200 mA) and one NFET controller ideal for driv-  
ing one or more high-current LEDs either in a high-power flash  
mode or a low-power torch mode.  
Up to 5A Flash Current  
■
■
4 Selectable Super-Capacitor Charge Voltage Levels  
(4.5V, 5.0V, 5.3V, Optimized)  
Flash Optimized Charge Mode for Optimal Efficiency  
■
−33% Faster Charge Time Using Optimal Mode  
−49% Less Power Dissipated in Current Source using  
Optimal Charge Mode  
Fast Super-Capacitor Charger with 500 mA Input Current  
Limit  
■
Adjustable Torch Current (60 mA to 200 mA)  
■
■
The LM3550 can be configured to utilize a proprietary super-  
capacitor charging scheme (Optimal Charge Mode), allowing  
faster charging times (0 to Target Voltage) and lower current-  
source power dissipation. Optimal Charge Mode adapts to  
changes in the flash LEDs forward voltage as well as the su-  
per-capacitor's ESR ensuring that the super-capacitor is  
charged to the ideal voltage required to sustain constant cur-  
rent-flash operation.  
Ambient Light or LED Thermal Sensing with Current  
Scaleback  
End-of-Charge Output (EOC)  
■
■
■
■
Dedicated Indicator LED Current Source  
No Inductor Required  
Manual Flash Enable via Strobe Pin Input  
Programmable Flash Pulse Duration, and Torch and Flash  
Currents via I2C-compatible Interface  
■
The LED current and Flash pulse duration of the LM3550 can  
be programmed via an I2C-compatible interface. The  
STROBE pin allows the Flash to be toggled via a flash-enable  
signal from a camera module. The EOC pin sinks current  
when the output voltage reaches 95% of the final value.  
True Shutdown (LED Disconnect)  
■
■
■
■
Flash Time-Out Protection  
LED Temperature Protection or Ambient Light Sensing Pin  
The ALD/TEMP input pin allows either a light sensor to adjust  
the flash-current level based on the ambient light conditions,  
or it allows for over-temperature detection and protection of  
the LED during high-power operation or high ambient-tem-  
perature conditions by connecting an NTC thermistor tem-  
perature monitoring circuit to the pin.  
Low Profile 20-Pin LLP Package (3.0 mm × 2.5 mm × 0.8  
mm)  
Applications  
Camera Phones  
■
■
■
Digital Still Camera  
Voltage Rail Management  
Typical Application Circuit  
30059459  
Solution Size  
30059401  
© 2012 Texas Instruments Incorporated  
300594 SNVS569A  
www.ti.com  
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LM3550SP/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM3550SPX/NOPB TI

完全替代

 具有自动 Vf 和 ESR 检测功能的 LED 闪光灯驱动器，适用于移动摄像机系统 | N

与LM3550SP/NOPB相关器件

型号 品牌 获取价格 描述 数据表
LM3550SPX TI

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 		5A Flash LED Driver with Automatic VLED and ESR Detection for Mobile Camera Systems
LM3550SPX/NOPB TI

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 		具有自动 Vf 和 ESR 检测功能的 LED 闪光灯驱动器，适用于移动摄像机系统 | N
LM3551 NSC

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 		1A White LED Driver with Flash Timeout Protection
LM3551 TI

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 		1A White LED Driver with Flash Timeout Protection
LM3551_06 NSC

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 		1A White LED Driver with Flash Timeout Protection
LM3551SD NSC

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 		1A White LED Driver with Flash Timeout Protection
LM3551SD TI

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 		LED DISPLAY DRIVER, QCC14, 4 X 4 MM, LLP-24
LM3551SD/NOPB TI

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 		1A White LED Driver with Flash Timeout Protection 14-WSON -40 to 85
LM3551SDX NSC

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 		1A White LED Driver with Flash Timeout Protection
LM3551SDX/NOPB TI

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 		1A White LED Driver with Flash Timeout Protection 14-WSON -40 to 85

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