FAN3988 Datasheet, PDF (2/9 Pages) Fairchild Semiconductor – USB/Charger and Over-Voltage Detection Device

Pin Configuration
Figure 2. Pin Configuration (Top View)
Pin Definitions
Pin#
1
2
3
4
5
6
Name
Vbus
D-
D+
Gnd
Flag2
Flag1
Type
Input
Input
Input
Input
Output
Output
Description
Power input from charger, USB device, or handheld battery
USB data input
USB data input
Device ground
Over/under-voltage flag output
Charger/standard USB device detect flag
Truth Table
Connection State
STD USB Device⁽¹⁾
STD USB Device
STD USB Device
USB Charger
V_BUS GT 6V
V_BUS LT 3.3V
PC Data/Charger
Note:
1. See Figure 7.
V_BUS
0V
0V
5V
5V
GT 6V
LT 3.3V
5V
D-
Open
R to Gnd
R to Gnd
Short to D+
Short to D+
Short to D+
Open
D+
Open
R to Gnd
R to Gnd
Short to D-
Short to D-
Short to D-
Open
FLAG1
LOW
LOW
LOW
HIGH
HIGH
HIGH
LOW
FLAG2
LOW
LOW
HIGH
HIGH
LOW
LOW
HIGH
© 2007 Fairchild Semiconductor Corporation
FAN3988 • Rev. 1.0.10
2
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