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USB3750 Datasheet(PDF) 16 Page - Microchip Technology

Part # USB3750
Description  USB 2.0 Protection IC with Battery
PDF  31 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB3750 Datasheet(HTML) 16 Page - Microchip Technology

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USB375x
DS00001824A-page 16
 2011 - 2014 Microchip Technology Inc.
FIGURE 4-5:
CHARGER DETECTION FLOW CHART (USB3751-1)
Start Chrg Detection
ChrgDetComplete = 0
Drive DP
VDAT_SRC for
TVDPSRC_ON
VDAT
Detect?
DCP
Detected
Exit Chrg Detection
ChrgDetComplete = 1
=1
Any UVLO or OVLO Exit Chrg Detection
SE1 Low
Current
Charger
Enable
100mA after
TVLO_RELEASE
Wait
TVDPSRC_HICRNT
SE1?
=1
Release and
wait TCD_SE1
=0
CDP
Detected
SE1 High
Current
Charger
RxHiCurr?
=1
=0
SDP
Detected
UVLO < VBUS < OVLO
Start TVLO_RELEASE
Enable IDP_SRC
and RPD_DM
Enable OVP
Switch
=0
Disable
100mA
current limit
Clear Charger
Detection
Register
Wait for DP
Low or
TDCD_TOUT
Disable
IDP_SRC
and RPD_DM
=1
VDAT
Detect?
Drive DM
VDAT_SRC for
TVDPSRC_ON
=0
=1



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