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FAN54012UCX(1)

更新时间： 2022-04-18 19:27:57
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD /
页数 文件大小 规格书
36页 1235K
描述
FAN54010 / FAN54011 / FAN54012 / FAN54013 / FAN54014

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July 2012  
FAN54010 / FAN54011 / FAN54012 / FAN54013 / FAN54014  
USB-Compliant Single-Cell Li-Ion Switching Charger with  
USB-OTG Boost Regulator  
Features  
Description  
The FAN54010 family (FAN5401X) combines  
a highly  
.
Fully Integrated, High-Efficiency Charger for Single-Cell  
Li-Ion and Li-Polymer Battery Packs  
integrated switch-mode charger, to minimize single-cell Lithium-  
ion (Li-ion) charging time from a USB power source, and a  
boost regulator to power a USB peripheral from the battery.  
.
.
Faster Charging than Linear  
Charge Voltage Accuracy:  
0.5% at 25°C  
1% from 0 to 125°C  
The charging parameters and operating modes are  
programmable through an I2C Interface that operates up to  
3.4 Mbps. The charger and boost regulator circuits switch at  
3MHz to minimize the size of external passive components.  
.
.
.
.
.
.
5% Input Current Regulation Accuracy  
5% Charge Current Regulation Accuracy  
20 V Absolute Maximum Input Voltage  
6 V Maximum Input Operating Voltage  
1.45 A Maximum Charge Rate  
The FAN5401X provides battery charging in three phases:  
conditioning, constant current, and constant voltage.  
To ensure USB compliance and minimize charging time, the  
input current is limited to the value set through the I2C host.  
Charge termination is determined by a programmable  
minimum current level. A safety timer with reset control  
provides a safety backup for the I2C host.  
Programmable through High-Speed I2C Interface  
(3.4 Mb/s) with Fast Mode Plus Compatibility  
–
–
–
–
Input Current  
The integrated circuit (IC) automatically restarts the charge  
cycle when the battery falls below an internal threshold. If the  
input source is removed, the IC enters a high-impedance  
mode with leakage from the battery to the input prevented.  
Charge status is reported back to the host through the I2C  
port. Charge current is reduced when the die temperature  
reaches 120°C.  
Fast-Charge / Termination Current  
Charger Voltage  
Termination Enable  
.
3 MHz Synchronous Buck PWM Controller with Wide  
Duty Cycle Range  
.
.
.
.
Small Footprint 1H External Inductor  
The FAN5401X can operate as a boost regulator on  
command from the system. The boost regulator includes a  
soft-start that limits inrush current from the battery.  
Safety Timer with Reset Control  
1.8 V Regulated Output from VBUS for Auxiliary Circuits  
The FAN5401X is available in a 1.96 x 1.87 mm, 20-bump,  
0.4 mm pitch, WLCSP package.  
Weak Input Sources Accommodated by Reducing  
Charging Current to Maintain Minimum VBUS Voltage  
.
.
Low Reverse Leakage to Prevent Battery Drain to VBUS  
5 V, 500 mA Boost Mode for USB OTG for 3.0 V to  
4.5 V Battery Input  
Applications  
.
.
.
Cell Phones, Smart Phones, PDAs  
Tablet, Portable Media Players  
Gaming Device, Digital Cameras  
Figure 1. Typical Application  
All trademarks are the property of their respective owners.  
© 2011 Fairchild Semiconductor Corporation  
FAN5401X Family • Rev. 1.0.4  
www.fairchildsemi.com  
1234567...36

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