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RT9466GQW

产品描述IC BATT CHRGR LI-ION WQFN-24L
产品类别半导体    电源管理   
文件大小430KB,共50页
制造商Richtek Technology Corporation
官网地址https://www.richtek.com/
标准
下载文档 详细参数 全文预览

RT9466GQW概述

IC BATT CHRGR LI-ION WQFN-24L

RT9466GQW规格参数

参数名称属性值
电池化学锂离子/聚合物
电池数1
电流 - 充电恒流 - 可编程
故障保护超温,过压
充电电流 - 最大值5A
电池组电压4.2V
电压 - 供电(最高)14V
接口I²C
工作温度-40°C ~ 85°C(TA)
封装/外壳24-WFQFN 裸露焊盘
供应商器件封装24-WQFN(4x4)

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®
RT9466
5A Single Cell Li-Ion Switching Battery Charger with Power
Path Management and USB-OTG Boost Mode
General Description
The RT9466 is a switch-mode single cell Li-Ion/Li-Polymer
battery charger for portable applications. It integrates a
synchronous PWM controller, power MOSFETs, input
current sensing and regulation, high-accuracy voltage
regulation, and charge termination. The charge current is
regulated through integrated sensing resistors. The
RT9466 also features USB On-The-Go (OTG) support.
The RT9466 optimizes for charging task by using a control
algorithm to vary the charge rate for different modes,
including pre-charge mode, fast charge mode (constant
voltage and constant current). The key charge parameters
are programmable through an I
2
C interface. The RT9466
will resume the charge cycle whenever the battery voltage
falls below an internal recharge threshold, and can
automatically enter sleep mode if the input power supply
is removed.
Other features include under-voltage protection, over
voltage protection, thermal regulation and reverse leakage
protection.
The RT9466 is available in a WQFN-24L 4x4 package.
Features
High Efficiency 5A, 1.5MHz Switching Charger with
Output Inductor DFE252012F, TOKO
Charging Efficiency 90.25% at ICHG = 2A
½
Charging Efficiency 88.86% at ICHG = 3A
½
Charging Efficiency 84.2% at ICHG = 5A
Synchronous 1.5MHz/0.75MHz Fixed-Frequency
PWM Controller with Up to 95% Duty Cycle
Power Path Management by BATFET Control
Support High Voltage Input (9V/12V)
Support High Voltage Input Adapter (Pump Express
1.0/2.0)
Support IR Compensation Function from Charger
Output to Cell Terminal
Optimize Input Sourcing Capability to Prevent
Overload
2
½
AICR Current Limit Setting via I C
½
ILIM Pin for Current Limit Setting
½
Average Input Current Limit Measurement
Shipping Mode for Battery Leakage Reduction
½
Wake Up System, Exit Shipping Mode, and Reset
System by QON Pin
Automatic Charging
Average Input Current Regulation (AICR) :
0.1A to 3.25A in 50mA Steps
Charge Current Regulation Accuracy :
±
7%
Charge Voltage Regulation Accuracy :
±
1% (0 to
85°C)
°
Protection for Overall System Considerations
½
Thermal Regulation for Current Reduction and
Over-Temperature Protection
½
Input Over-Voltage Protection
½
Input Bad Adapter Protection
½
Battery Over-Voltage Protection
Support ADC Conversion for
½
VBUS, VBAT, VSYS, REGN, TS_BAT, IBUS, IBAT,
TEMP_JC
INT Output for Communication with Host Through
I
2
C (Watch Dog/Polling Function)
½
Applications
Cellular Telephones
Personal Information Appliances
Tablet PC, Power Bank
Portable Instruments
Ordering Information
RT9466
Package Type
QW : WQFN-24L 4x4 (W-Type)
(Exposed Pad-Option 2)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
½
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
½
Suitable for use in SnPb or Pb-free soldering processes.
is a registered trademark of Richtek Technology Corporation.
Copyright
©
2017 Richtek Technology Corporation. All rights reserved.
DS9466-02 February 2017
www.richtek.com
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