Datasheet > FAN3989

FAN3989

更新时间： 2022-12-28 03:42:01

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		开关
页数	文件大小	规格书
10页	1081K
描述
USB/Charger Detection Device with Load Switch

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FAN3989 数据手册

November 2008

FAN3989

USB/Charger Detection Device with Load Switch

Features

Description

The FAN3989 is a USB-connection-monitoring device

used to determine if a standard USB device is

connected or a battery changing device is connected.

Charger/USB Detection Device with Load Switch

Charger/USB Device Detection Flag

Over/Under-Voltage Detection Flag

Load Switch Output, Up to 1.5A Charge Current

V_BUSSupply: 2.7V to 20V

The FAN3989 sets the FLAG1 pin to logic HIGH or

LOW as an indicator to the system controller that a

standard USB device or a charger is connected to the

USB port. The FAN3989 also monitors the V_BUSfor

over- or under-voltage conditions. The FLAG2 pin is set

LOW if V_BUSis less than 3.3V or greater than 6.0V. The

internal LS CTRL (load switch control) pin is set HIGH if

V_BUSis less than 3.3V or greater than 6.0V, turning off

the PMOS switch.

C_ONof 1.5pF

Package: 8 MLP

Applications

The FAN3989 is packaged in a very small 8-lead MLP

package suitable for small board space applications,

like mobile phones.

Mobile Phones

Handheld Devices

Ordering Information

Operating

Temperature Range

Packing

Method

Part Number

Package

Quantity

Eco Status

8-Lead Molded Leadless

Package (MLP)

FAN3989MLP8X

-40°C to +85°C

Green

Reel

3000

For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

V_OUT

LS CTRL

V_BUS

Comparator

FLAG 2

FLAG 1

Logic

OVP

UVP

Std USB/

Charger

Detect

D-

D+

GND

Figure 1.

Block Diagram

www.fairchildsemi.com

FAN3989

Rev. 1.0.3

12 3 4 5 6 7...10

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