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BQ24770

更新时间： 2024-02-07 05:05:10
品牌 Logo 应用领域
德州仪器 - TI 电池
页数 文件大小 规格书
11页 794K
描述
bq2477x NVDC Battery Charge Controller With System Power Monitor and Processor Hot Indicator

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中文翻译

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BQ24770 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：QFN
包装说明：HVQCCN,针数：28
Reach Compliance Code：compliantFactory Lead Time：6 weeks
风险等级：1.64可调阈值：YES
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：S-PQCC-N28
JESD-609代码：e4长度：4 mm
湿度敏感等级：2信道数量：1
功能数量：1端子数量：28
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
座面最大高度：0.75 mm最大供电电流 (Isup)：5 mA
最大供电电压 (Vsup)：24 V最小供电电压 (Vsup)：4.5 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：NO LEAD
端子节距：0.4 mm端子位置：QUAD
宽度：4 mmBase Number Matches：1

BQ24770 数据手册

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Sample &  
Buy  
Support &  
Community  
Product  
Folder  
Tools &  
Software  
Technical  
Documents  
bq24770, bq24773  
SLUSCB0 –MAY 2015  
bq2477x NVDC Battery Charge Controller With System Power Monitor  
and Processor Hot Indicator  
1 Features  
2 Applications  
1
•
Host-controlled NVDC-1 1S-4S Battery Charge  
Controller with 4.5-24 V Input Range  
•
•
•
Ultrabook, Notebook, Detachable, and Tablet PC  
Handheld Terminal  
–
–
Support SMBus (bq24770) and I2C (bq24773)  
Industrial, Medical, Portable Equipment  
System Instant-on Operation with no Battery or  
Deeply Discharged Battery  
3 Description  
The bq2477x is high-efficiency, synchronous, NVDC-  
1 battery charge controllers, offering low component  
count for space-constraint, multi-chemistry battery  
charging applications.  
–
Supplement Mode with Synchronous BATFET  
Control when Adaptor is fully loaded  
•
•
Ultra Fast Input Current DPM at 100 μs  
Ultra Low Quiescent Current of 600 µA and High  
PFM Light Load Efficiency >80% at 20 mA Load  
to Meet Energy Star and ErP Lot6.  
The power path management allows the system to be  
regulated at battery voltage but does not drop below  
system minimum voltage (programmable). With this  
feature, the system keeps operating even when the  
battery is completely discharged or removed. The  
power path management allows the battery to provide  
supplement current to the system to keep the input  
supply from being overloaded.  
•
High Accuracy Power / Current Monitor for CPU  
Throttling  
–
–
–
Comprehensive PROCHOT Profile  
Input and Battery Current Monitor (IADP/IBAT)  
System Power Monitor (PMON)  
The bq2477x provides drivers and power path  
management for N-channel ACFET and reverse  
blocking FET. The devices provides driver to control  
NVDC operation of external P-channel battery FET. It  
also drives high-side and low-side MOSFETs of the  
switching regulator.  
•
Programmable Input Current Limit, Charge  
Voltage, Charge Current and Minimum System  
Voltage Regulation  
–
–
–
±0.5% Charge Voltage (16 mV/step)  
±2% Input/charge Current (64 mA/step)  
The bq2477x monitors adapter current (IADP),  
battery charge/discharge current (IBAT) and system  
power (PMON). The flexibly programmed PROCHOT  
output goes directly to CPU for throttle back when  
needed.  
±2% 40x Input / 16x Discharge / 20x Charge  
Current Monitor  
•
•
Support Battery LEARN Function  
High Integration  
–
–
–
–
–
NMOS ACFET and RBFET Driver  
PMOS battery FET Gate Driver  
Internal Loop Compensation  
Independent Comparator  
Device Information(1)  
PART NUMBER  
bq24770  
PACKAGE  
BODY SIZE (NOM)  
WQFN (28-Pin)  
4.00mm x 4.00mm2  
bq24773  
Automatic Trickle Charge to Wake up Gas  
Gauge  
(1) For all available packages, see the orderable addendum at  
the end of the datasheet.  
•
600kHz to 1.2MHz Programmable Switching  
Frequency  
4 Simplified Schematic  
Light Load Efficiency (VIN = 19.5 V)  
RAC  
Adapter  
4.5-24V  
Enhanced Safety:  
OCP, OVP, FET Short  
100  
95  
90  
85  
80  
75  
70  
65  
60  
N-FET Driver  
SYS  
Adapter Detection  
Bq24770  
P-FET Driver  
SMBus Controls V and I  
with high accuracy  
NVDC Charge  
Controller  
R
SR  
SMBus  
HOST  
IADP, IDCHG,  
PMON, PROCHOT  
VSYS = 9.0V  
VSYS = 13.5V  
55  
50  
0
0.02  
0.04  
0.06  
0.08  
0.1  
0.12  
0.14  
D003  
System Load Current (A)  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
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中文翻译

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