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Fairchild Semiconductor Electronic Components Datasheet

FAN3989 Datasheet

USB/Charger Detection Device

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November 2008
FAN3989
USB/Charger Detection Device with Load Switch
Features
ƒ Charger/USB Detection Device with Load Switch
ƒ Charger/USB Device Detection Flag
ƒ Over/Under-Voltage Detection Flag
ƒ Load Switch Output, Up to 1.5A Charge Current
ƒ VBUS Supply: 2.7V to 20V
ƒ CON of 1.5pF
ƒ Package: 8 MLP
Applications
ƒ Mobile Phones
ƒ Handheld Devices
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.
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 VBUS for
over- or under-voltage conditions. The FLAG2 pin is set
LOW if VBUS is less than 3.3V or greater than 6.0V. The
internal LS CTRL (load switch control) pin is set HIGH if
VBUS is less than 3.3V or greater than 6.0V, turning off
the PMOS switch.
The FAN3989 is packaged in a very small 8-lead MLP
package suitable for small board space applications,
like mobile phones.
Ordering Information
Part Number
Operating
Temperature Range
FAN3989MLP8X
www.DataSheet4U.com
-40°C to +85°C
Eco Status
Green
Package
8-Lead Molded Leadless
Package (MLP)
Packing
Method
Quantity
Reel
3000
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
VOUT
LS CTRL
VBUS
D-
D+
GND
© 2007 Fairchild Semiconductor Corporation
FAN3989 Rev. 1.0.3
Comparato r
OVP
UVP
Std USB/
Charger
Detect
Logic
Logic
Figure 1. Block Diagram
FLAG 2
FLAG 1
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

FAN3989 Datasheet

USB/Charger Detection Device

No Preview Available !

Pin Configuration
D+ 1 8 D-
GND 2 7 FLAG2
FLAG2 3 6 VBUS
LS CTRL 4 5 VOUT
Figure 2. Pin Configuration (Top View)
Pin Definitions
Pin# Name
1 D+
2 GND
3 Flag2
4 LSctrl
www.DataSheet54U.com Vout
6 VBUS
7 Flag1
8 D-
Type
Input
Input
Output
Output
Output
Input
Output
Input
Description
USB data input
Device ground
Over/under-voltage flag output
PMOS switch control – pull-up connection to VBUS
Voltage out
Power input from charger, USB device, or handheld battery
Charger/standard USB device detect flag
USB data input
Truth Table
Connection
State
STD USB Device
VBUS
0V
USB Charger
5V
VBUS GT 6V
VBUS LT 3.3V
PC Data/Charger
GT 6V
LT 3.3V
5V
D-
R to GND
Short to D+
Short to D+
Short to D+
Open
D+ FLAG1 FLAG2 LS CTRL Description
R to GND
Short to D-
Short to D-
Short to D-
Open
LOW
HIGH
HIGH
HIGH
LOW
LOW
HIGH
LOW
LOW
HIGH
HIGH
LOW
HIGH
HIGH
LOW
Load switch open
Normal state,
load switch closed
Load switch open
Load switch open
Load switch closed
© 2007 Fairchild Semiconductor Corporation
FAN3989 • 1.0.3
2
www.fairchildsemi.com


Part Number FAN3989
Description USB/Charger Detection Device
Maker Fairchild Semiconductor
Total Page 10 Pages
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