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SMB139

更新时间： 2024-01-28 21:23:11
品牌 Logo 应用领域
SUMMIT 电池
页数 文件大小 规格书
27页 393K
描述
Programmable Linear Battery Charger in 1.3 x 2.1 uCSP

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SMB139 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：FBGA, BGA15,3X5,16Reach Compliance Code：compliant
风险等级：5.84JESD-30 代码：R-PBGA-B15
端子数量：15最高工作温度：85 °C
最低工作温度：-30 °C封装主体材料：PLASTIC/EPOXY
封装代码：FBGA封装等效代码：BGA15,3X5,16
封装形状：RECTANGULAR封装形式：GRID ARRAY, FINE PITCH
电源：5 V认证状态：Not Qualified
子类别：Power Management Circuits标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：OTHER
端子形式：BALL端子节距：0.4 mm
端子位置：BOTTOMBase Number Matches：1

SMB139 数据手册

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SMB139  
Programmable Linear Battery Charger in 1.3 x 2.1 uCSPTM  
FEATURES & APPLICATIONS  
INTRODUCTION  
The SMB139 is a programmable single-cell lithium-ion/lithium-polymer  
battery charger for a variety of portable applications. The device  
provides a simple way to charge low-capacity Li-Ion or Li-Polymer  
batteries via a USB port or an AC port. Unlike conventional devices,  
the SMB139’s very small package and high level of configurability  
simplify design in a wide range of handheld equipment.  
• World’s smallest linear charger  
• Linear charging for reduced board space  
o
o
Up to 210mA charge current *  
Stable with small ceramic capacitors  
• 4.35 to 6.5V input voltage range  
• Small 1.3 x 2.1 uCSPTM package (0.4mm pitch)  
• High-accuracy output voltage regulation: 1%  
• Low reverse leakage current  
Charge control includes qualification, trickle-charge, pre-charge,  
constant current/constant voltage, and termination/safety settings that  
are fully programmable via a serial I2C/SMBus making the device truly  
a flexible solution. Pre-charge, fast charge and termination current  
levels can be set via I2C commands. The Enable (EN) pin is used for  
suspending or re-staring the charging process.  
• Digital programming of all major parameters via I2C  
interface and lockable non-volatile memory  
o
o
o
o
o
o
Battery voltage set point  
Pre-charge, fast charge, termination current  
Fast charge voltage threshold  
Temperature limits  
The SMB139 offers a wide variety of features that protect the battery  
pack as well as the charger and input circuitry: over-current,  
under/over-voltage and thermal protection. Ultra-precise, 1% accurate,  
float voltage control improves battery capacity utilization. Status can  
be monitored via the serial port for charge state and fault conditions.  
In addition, one LED driver output can be used to signal charge status.  
Charge safety timers  
Automatic restart threshold  
• Fault/Status indicator  
• Wide range of protection features  
o
o
Thermal regulation  
As  
a
protection mechanism, when the junction temperature  
Input/output over-voltage lockout  
approaches approximately 110°C, the SMB139 will start to reduce  
charge current to ensure device and system reliability, while charging  
the battery cell as fast as possible.  
Applications  
• Bluetooth & Stereo Headsets  
• Noise Cancellation Headphones  
• MP3 Players  
The SMB139 is available in a space-saving 1.3mm x 2.1mm uCSPTM  
package with lead-free balls and is rated over the –30°C to +85°C  
temperature range.  
• Wrist PDA/Watches  
• Toys  
• Handheld Equipment  
SIMPLIFIED APPLICATIONS DRAWING  
4.35V to 6.5V  
10V Tolerance  
IN  
SMB139  
2.2µF  
TRICKLE  
VDDCAP  
1µF  
SENSE  
OUT  
Up to 210mA  
Charge Current  
Optional  
Battery  
OVLO  
SDA  
BATT  
I2C Communication  
(Optional)  
2.2µF  
SCL  
EN  
CHGSET  
1-cell  
Li+ Battery  
THERM  
STAT  
GND  
RLIM  
RED  
LED  
Figure 1 – Applications block diagram featuring the SMB139 programmable linear battery charger.  
* Contact factory for higher current version  
© SUMMIT Microelectronics, Inc. 2005 h• t7tp57:/N/w. Mwarwy A.sveunume m• SiutnmnyivcalreoC.Aco94m08/5 • Phone 408 523-1000 • FAX 408 523-1266  
2121 3.016/19/2008  
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