BQ24392-Q1_15 Datasheet, PDF (7/22 Pages) Texas Instruments – BQ24392-Q1 Dual SPST USB 2.0 High Speed Switch With USB Battery Charging Specification Revision 1.2 Detection

www.ti.com
7 Detailed Description
BQ24392-Q1
SLIS160B – AUGUST 2014 – REVISED JANUARY 2015
7.1 Overview
The BQ24932-Q1 is a USB 2.0 high-speed isolation switch with charger detection capabilities for use with micro
and mini-USB ports. Upon plugin of a Battery Charging Specification 1.2 (BCv1.2) compliant, Apple™,
TomTom™, or other USB charger into a micro or mini-USB connector, the device will automatically detect the
charger and operate the USB 2.0 high-speed isolation switch.
The BQ24932-Q1 device is powered through VBUS when a charger is attached to the micro or mini-USB port
and has a 28-V tolerance to avoid the need for external protection.
7.2 Functional Block Diagram
BQ24392
USB
HOST
DM_HOST
DP_HOST
Switch
MMaattrriixx
Supply
Detect
VBUS
DM_CON
DP_CON
ID_CON
GND
Micro
USB
SYSTEM
&
CHARGER
GOOD_BAT
SW_OPEN
CHG_AL_N
CHG_DET
Logic
DP/DM
Comparator
Copyright © 2014–2015, Texas Instruments Incorporated
Submit Documentation Feedback
7