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RT9451 Datasheet(PDF) 34 Page - Richtek Technology Corporation

Part # RT9451
Description  Switch-Mode Single Cell Li-ion Battery Charger with USB OTG
PDF  37 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9451 Datasheet(HTML) 34 Page - Richtek Technology Corporation

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RT9451
34
DS9451-00
September 2013
www.richtek.com
©
Copyright
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
2.9V < VBATS <
4.75V ?
Reset OPA_MODE bit
Boost Configure 2
VMID = 5.05V
Yes
2.5V < VBATS <
4.75V ?
Yes
VIN < 6V ?
No
OTG pin is
Active ?
Yes
Boost Configure 1
No
Charge Configure
(I
2
C is Programmable)
No
OPA = 1 & HZ = 0 ?
OTG Pin is Enabled ?
(By I
2C)
No
Yes
2.9V < VBATS <
4.75V ?
VMID = 5.05V
Yes
2.5V < VBATS <
4.75V ?
Yes
VIN < 6V ?
No
No
Overload <
32ms
Yes
Yes
Yes
Yes
No
Overload <
32ms
Any I
2
C ?
< 32s
Yes
Reset 32s
Yes
No
< 32s
Yes
Any I
2
C ?
Reset 32s
Yes
No
Clean I
2
C
No
No
No
No
No
No
Yes
Figure 8. OTG Mode



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