FAN5400

更新时间： 2024-11-14 10:28:11

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		电池开关
页数	文件大小	规格书
5页	553K
描述
USB-Compliant Single-Cell Li-Ion Switching Charger

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中文翻译

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FAN5400 数据手册

November 2010

FAN5400 Family

USB-Compliant Single-Cell Li-Ion Switching Charger with

USB-OTG Boost Regulator

Features

Description

The FAN5400 family (FAN540X) combines a highly 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.

Fully Integrated, High-Efficiency Charger for Single-Cell

Li-Ion and Li-Polymer Battery Packs

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

3.4Mbps. 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

20V Absolute Maximum Input Voltage

6V Maximum Input Operating Voltage

1.25A Maximum Charge Rate

The FAN540X 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

(3.4Mb/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

3MHz Synchronous Buck PWM Controller with Wide

Duty Cycle Range

The FAN540X 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.

Small Footprint 1μH External Inductor

Safety Timer with Reset Control

The FAN540X is available in a 1.96 x 1.87mm, 20-bump,

0.4mm pitch WLCSP package.

1.8V Regulated Output from VBUS for Auxiliary Circuits

Weak Input Sources Accommodated by Reducing

Charging Current to Maintain Minimum VBUS Voltage

1μH

VBUS

1μF

Low Reverse Leakage to Prevent Battery Drain to VBUS

R_SENSE

C_BUS

0.1μF

C_OUT

5V, 300mA Boost Mode for USB OTG for 2.5 to 4.5V

Battery Input

PGND

CSIN

68mΩ

PMID

4.7μF

Battery

C_MID

FAN540X

VBAT

SDA

SCL

Applications

C_BAT

10μF

SYSTEM

LOAD

Cell Phones, Smart Phones, PDAs

DISABLE

VREG

C_REG

OTG/USB#

STAT

Tablet, Portable Media Players

Gaming Device, Digital Cameras

1μF

Figure 1. Typical Application (FAN5403-05 Pinout)

All trademarks are the property of their respective owners.

FAN5400 Family • Rev. 1.0.2

www.fairchildsemi.com

12 3 4 5

中文翻译

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与FAN5400相关器件

型号	品牌	获取价格	描述	数据表
FAN5400_11	FAIRCHILD	获取价格	FAN5400 / FAN5401 / FAN5402 / FAN5403 / FAN5404 / FAN5405 USB-Compliant Single-Cell Li-Ion
FAN54005UCX	ONSEMI	获取价格	电池充电控制器，开关，200mA - 1.45 A，带 USB-OTG 升压稳压器
FAN5400UCX	FAIRCHILD	获取价格	USB-Compliant Single-Cell Li-Ion Switching Charger
FAN5401	FAIRCHILD	获取价格	USB-Compliant Single-Cell Li-Ion Switching Charger
FAN54010	FAIRCHILD	获取价格	USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
FAN54010UCX	FAIRCHILD	获取价格	USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
FAN54010UCX(1)	FAIRCHILD	获取价格	FAN54010 / FAN54011 / FAN54012 / FAN54013 / FAN54014
FAN54011	FAIRCHILD	获取价格	USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
FAN54011UCX	FAIRCHILD	获取价格	USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
FAN54011UCX(1)	FAIRCHILD	获取价格	FAN54010 / FAN54011 / FAN54012 / FAN54013 / FAN54014

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