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RT9451 датащи(PDF) 35 Page - Richtek Technology Corporation

номер детали RT9451
подробное описание детали  Switch-Mode Single Cell Li-ion Battery Charger with USB OTG
PDF  37 Pages
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производитель  RICHTEK [Richtek Technology Corporation]
домашняя страница  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9451 датащи(HTML) 35 Page - Richtek Technology Corporation

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RT9451
35
DS9451-00
September 2013
www.richtek.com
©
Copyright
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Figure 9. Operation Flow Chart
Any State
OTG_EN = 1?
OTG Pin from High to Low
@ OTG_PL = 0? or
OTG Pin from Low to High
@ OTG_PL = 1?
OTG Mode
OTG Pin=High @ OTG_PL = 0? or
OTG Pin=Low @ OTG_PL = 1?
VIN > VPOR_IN?
Power On
Load I
2
C with Default
Settings
VBATS > VSHORT?
Charge with ISHORT
Fast-Charge with Low-
CHRG
ICHRG < IEOC?
Termination is
Enabled?
Keep in CV Mode
Charge Done
------------------------
INT of Charge
Termination
Re-Charge is
Enabled?
VBATS < VRECH?
INT of Re-Charge
32 Min Timer
Expired?
32 Min Timer
Expired?
INT of TFault
Fault in Buck Mode
(1) OVP
(2) CHRVPI
(3) TFault
(4) CVOVP
OTG Mode
CH_EN[1:0] = [0,1]?
Fault?
---------------------------------
VINOVP, VOCP, VBATUVP,
VBATOVP, T32s Fault
Set to Hi-Z Mode
--------------------------
CH_EN[1:0] = [0,0]
No
No
No
No
No
No
No
No
No
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No



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