Datasheet > RT9481

RT9481

更新时间： 2024-11-07 20:05:51

品牌	Logo	应用领域
立锜 - RICHTEK		电池
页数	文件大小	规格书
43页	1988K
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中文翻译

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技术参数
数据手册

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RT9481 技术参数

Status：	Active	Vin (min) (V)：	4.3
Vin (max) (V)：	5.65	Battery Charge Voltage (max) (V)：	4.6
Battery Charge Current (max) (A)：	2.7	Input Source：	AC Adapter;USB
Features：	Cycle-by-Cycle Current Limit;OCP;OVP;SCP;UVP	Package Type：	WQFN4x4-24

RT9481 数据手册

RT9481

Easy to Use Power Bank Solution (EZPBS^TM) Integrated Chip

with Switch Charger, ADC, and Load Switch

General Description

Features

System

The RT9481 is a high integration and easy to use

power solution for Li-ion power bank and other

powered handheld applications. We call it EZPBS^TM

(Easy to Use Power Bank Solution). This single chip

includes a Switching Charger with Boost function,

Analog to Digital Converter (ADC), USBOUT Load

Switch, Adapter Detection with BC1.2, DCP controller

and LDO.

 High Accuracy Voltage/Current Regulation

 1% Charge Voltage Regulation

 0.1A Charge Current Regulation

 3% Boost USBOUT Voltage Regulation

 Thermal Shutdown Protection

 Reverse Leakage Protection to Prevent Battery

Drainage.

 Built-In USBOUT DCP Controller

 Built-In USBOUT Attach/Detach Detection

 Built-In USBOUT Light Load Detection

 Built-In Load Switch with Current Regulation

Thermal Regulation and Output Short Current

Protection

Applications

 Power Bank

Ordering Information

RT9481

 Built-In Adapter Detection with BC1.2

 Built-In Accurate ADC to Measure VBAT, VBUS,

TS, IBAT , USBOUT and IUSBOUT

 Built-In LDO

Package Type

QW : WQFN-24L 4x4 (W-Type)

(Exposed Pad-Option 2)

Lead Plating System

G : Green (Halogen Free and Pb Free)

 Interrupt Output for Event Notification

 I²C Interface with 400kHz

Note :

Richtek products are :

Charge Mode

 RoHS compliant and compatible with the current

requirements of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

 Charge Voltage Regulation : 3.65V to 4.6V

 Charge Current Regulation : 0.7A to 2.7A

 Minimum Input Voltage Regulation (MIVR) :

4.2V to 4.8V

Pin Configurations

 Average Input Current Regulation (AICR) : 0.1A

to 2A

(TOP VIEW)

 Charge Termination Current : 0.15A to 0.6A

 Pre-charge Threshold : 2.3V to 3.8V

 Pre-charge Current : 0.2A to 0.5A

 Thermal Regulation

24 23 22 21 20 19

USBOUT

VHMID

VBUS

SCL

SDA

INT

 VMID Under Voltage Protection

 VBUS Over Voltage Protection

 Battery Over Voltage Protection

 Bad Adapter Detection

AGND

VDDA

VDD28V

VBUS

D-

9 10 11 12

Boost Mode

 Boost Output Current Up to 3A

 Boost Output Voltage : 3.65V to 5.2V

 Battery Under Voltage Protection : 2.5V to 3.2V

 VMID Over Voltage Protection

WQFN-24L 4x4

is a registered trademark of Richtek Technology Corporation.

DS9481-04 August 2016

www.richtek.com

12 3 4 5 6 7...43

中文翻译

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与RT9481相关器件

型号	品牌	获取价格	描述	数据表
RT9485	RICHTEK	获取价格	暂无描述
RT9490	RICHTEK	获取价格	5A 2-4 Cell Buck-Boost Switching Battery Charger
RT9492	RICHTEK	获取价格	5A 1-4 Cell Buck-Boost Switching Battery Charger
RT94BR08GYT	AMPHENOL	获取价格	Combination Line Connector, 8 Contact(s), Male, Solder Terminal, Receptacle
RT94BR08RDT	AMPHENOL	获取价格	Combination Line Connector, 8 Contact(s), Male, Solder Terminal, Receptacle
RT94BR08WHT	AMPHENOL	获取价格	Combination Line Connector, 8 Contact(s), Male, Solder Terminal, Receptacle
RT94BR08YET	AMPHENOL	获取价格	Combination Line Connector, 8 Contact(s), Male, Solder Terminal, Receptacle
RT94BR16BLT	AMPHENOL	获取价格	Combination Line Connector, 16 Contact(s), Male, Solder Terminal, Receptacle
RT94BR16BNT	AMPHENOL	获取价格	Combination Line Connector, 16 Contact(s), Male, Solder Terminal, Receptacle
RT94BR16GNT	AMPHENOL	获取价格	Combination Line Connector, 16 Contact(s), Male, Solder Terminal, Receptacle

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