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RT9472

更新时间: 2024-09-18 17:00:47
品牌 Logo 应用领域
立锜 - RICHTEK 电池
页数 文件大小 规格书
47页 2807K
描述
3A Single Cell Switching Battery Charger

RT9472 数据手册

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RT9472/D  
3A Single Cell Switching Battery Charger  
General Description  
Features  
High Efficiency, 1.5MHz, Synchronous Switch-  
The RT9472/D is a highly-integrated 3A switch mode  
battery charge management and system power path  
management device for single cell Li-Ion and Li-polymer  
battery. The low impedance power path optimizes  
switch-mode operation efficiency, reduces battery  
charging time and extends battery life during  
discharging phase. The I2C serial interface with  
charging and system settings makes the device a truly  
flexible solution.  
Mode Buck Charger  
92% Charge Efficiency at 2A with 5V Input and  
3.8V Battery  
Support 3.9V to 13.5V Input Voltage Range  
Average Input Current Regulation (AICR)  
Minimum Input Voltage Regulation (MIVR)  
Minimum Input Voltage Regulation Track  
(MIVR Track)  
Charge Current Regulation (CCR)  
Charge Voltage Regulation (CVR)  
Charge Voltage Regulation Track (CVR Track)  
Junction Thermal Regulation (JTR)  
Supports USB On-The-Go (OTG)  
92% Boost Efficiency at 1A with 3.8V Battery  
and 5.15V Output  
Ordering Information  
RT9472/D  
Pin 1 Orientation***  
(2) : Quadrant 2, Follow EIA-481-D  
Package Type  
QW : WQFN-24L 4x4 (W-Type)  
(Exposed Pad-Option 2)  
OTG Current Limit Regulation (OCLR)  
OTG Voltage Limit Regulation (OVLR)  
Protection  
Lead Plating System  
G : Green (Halogen Free and Pb Free)  
Function Support  
Default : Pin2 : PSEL, Pin3 : PG  
D : Pin2 : D+, Pin3 : D-  
Over-Temperature Protection (OTP)  
VBUS Over-Voltage Protection (VBUS OVP)  
Battery Over-Voltage Protection (VBAT OVP)  
System Over-Voltage Protection (VSYS OVP)  
System Under-Voltage Protection (VSYS UVP)  
System Over-Load Protection (VSYS OLP)  
Cycle-by-Cycle Over-Current Protection (OCP)  
OTG Low Battery Protection (OTG LBP)  
Note :  
***Empty means Pin1 orientation is Quadrant 1  
Richtek products are :  
RoHS compliant and compatible with the current  
requirements of IPC/JEDEC J-STD-020.  
Suitable for use in SnPb or Pb-free soldering processes.  
Applications  
Smart Phone/Tablet PC  
Personal Information Appliances  
Portable Device and Accessory  
Simplified Application Circuit  
RT9472/D  
VAC  
BTST  
SW  
USB  
VBUS  
CBTST  
L
System  
CSYS  
CBUS  
PMID  
SYS  
BAT  
CBAT  
QON  
REGN  
2
I C BUS  
Host  
TS  
Host control  
Battery  
Pack  
Copyright © 2020 Richtek Technology Corporation. All rights reserved.  
is a registered trademark of Richtek Technology Corporation.  
DS9472/D-00 July 2020  
www.richtek.com  
1

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