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SMB135E-470V View Datasheet(PDF) - Summit Microelectronics

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Description
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SMB135E-470V Datasheet PDF : 34 Pages
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SMB135
APPLICATIONS INFORMATION (CONTINUED)
POR
Vin >
Standby Mode
(Pause Charge)
NO
Vbat+130mV ?
(Always
Monitored)
HUB
Divide I(charge)
settings by 5
YES
Vbat>2.0V?
T(hi)>T>T(lo)?
NO
(Always
Monitored)
YES
YES
Default
100mA USB Mode
Wait for USB
Controller
USB TYPE
Host/Hub
Vbat <Vprechg?
HOST
NO
NO
3mA trickle charge
(timers off)
YES
Precharge Mode
Reset t(precharge)
NO
Normal Charge Mode
Reset t(charge)
NO
Regulate Current to
I(precharge)
(<Imax-in)
Vbat <Vprechg?
YES
NO
YES
NO
Vbat < Vfloat?
Regulate Voltage to
Vfloat
I(charge) <
I(terrm)?
NO
YES
Regulate Current to
I(charge)
(See Current
Boosting)
YES
NO
t(charge) expired?
YES
t(charge) expired?
NO
Vbat <Vprechg?
t(precharge)
expired?
YES
YES
Battery Fault
Terminate Charge
Standby Mode
NO
Terminate Charge
Standby Mode
Vbat < Vfloat-
100mV?
YES
Figure 8 – Functional flow chart.
Summit Microelectronics, Inc
2106 3.1 11/4/2008
17
 

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