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LM8850URE/NOPB

更新时间： 2024-01-25 12:48:04
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页数 文件大小 规格书
20页 1102K
描述
High-Performance, Step-Up DC-DC Converter for High-Power Applications in Mobile Devices

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LM8850URE/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：1.65其他特性：ALSO OPERATES IN PFM CONTROL TECHNIQUE, ALSO OPERATES IN ADJUSTABLE MODE FROM 3.6 TO 5.7V
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：5.5 V
最小输入电压：2.3 V标称输入电压：3.6 V
JESD-30 代码：R-PBGA-B9JESD-609代码：e1
长度：1.6045 mm湿度敏感等级：1
功能数量：1端子数量：9
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：1.65 A最大输出电压：5.7 V
最小输出电压：3.6 V封装主体材料：PLASTIC/EPOXY
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
座面最大高度：0.395 mm表面贴装：YES
切换器配置：BOOST最大切换频率：2750 kHz
温度等级：INDUSTRIAL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：NOT SPECIFIED
宽度：1.564 mm

LM8850URE/NOPB 数据手册

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LM8850  
www.ti.com  
SNVS647C –AUGUST 2010–REVISED MAY 2013  
LM8850 High-Performance, Step-Up DC-DC Converter for High-Power Applications in  
Mobile Devices  
Check for Samples: LM8850  
1
FEATURES  
APPLICATIONS  
2
•
6µA typ. Quiescent Current  
•
•
•
•
•
Flash LED  
Mobile Phones  
WiMAX  
•
•
VOUT = 3.6V to 5.7V (max VO = 5.7V)  
Operates from a Single Lithium Ion Cell (2.3V  
to 5.5V)  
USB  
•
•
•
•
•
•
•
•
•
8 User-selectable Output Voltages via I2C  
High-speed 3.4 MHz I2C-compatible Interface  
Up to 1.0A Maximum Load Current Capability  
4 Levels of Current Limiting  
Audio Amplifier  
DESCRIPTION  
LM8850 is a step-up DC-DC converter optimized for  
use with a supercapacitor to protect a battery from  
power surges and enable new high power  
applications in mobile device architectures. The  
device creates an ideal rail from 3.6V to 5.7V  
boosting from a single Li-Ion cell with an input voltage  
range of 2.3V to 5.5V; Target VOUT must be at least  
10% higher than VIN.  
An I2C interface controlling multiple output voltage  
settings, input current limits, and load currents up to  
1A provides superior user flexibility. The LM8850  
operates in Auto mode, where the converter is in  
PFM mode at light loads and switches to PWM mode  
at heavy loads. Hysteretic PFM extends the battery  
life by reduction of the quiescent current to 6µA (typ.)  
during light load and standby conditions.  
Synchronous operation provides true shutdown  
isolation and improves its efficiency at medium-to-full  
load conditions.  
Auto-mode Operation and Forced PWM  
2.5 MHz Switching Drequency (typ.)  
±2.5% DC Output Voltage Precision  
1.0 µH Inductor (2520 Case Size)  
4.7 µF Input and Output Capacitors (0603 case  
size)  
•
•
•
•
PGOOD Signal  
True Shutdown Isolation  
Output Over-voltage Protection  
Internal Active Voltage Balancing for  
Supercapacitors  
•
DSBGA 9-bump Package  
–
(1.58 mm x 1.62 mm x 0.35 mm)(0.5 mm  
pitch)  
Typical Application Circuit  
3.6V  
VIN  
1 mH  
4.7 mF  
VOUT  
BAL  
5V  
SW  
4.7 mF  
LM8850  
PG  
0.05F to 1.0F  
SDA  
SCLK  
GND  
EN  
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 © 2010–2013, Texas Instruments Incorporated  
1234567...20

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LM8850URE/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM8850URX/NOPB TI

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