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SC805 Datasheet(PDF) 13 Page - Semtech Corporation

Part # SC805
Description  Miniature Integrated High Current Lithium-Ion Battery Charger
PDF  15 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC805 Datasheet(HTML) 13 Page - Semtech Corporation

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 2005 Semtech Corp.
www.semtech.com
SC805
POWER MANAGEMENT
State Diagram
Shutdown Mode
Vout/Iout off
CHRGB High Z
Soft Start CC Mode
Start Pre-Charge
OVP> Vin > UVLO
Iout=1500/Rprog
Iout=150/Rterm
Under Voltage will force the
SC805 into Shutdown Mode
from any state.
Over Voltage will disable
the output, suspend the
timer, and blink CHRGB
Monitor Mode
Vout=off
Float Charge Mode
Vout = CV
Yes
Soft Start Vout
Yes
En=Hi
Timer
Enabled?
Start Timer
Vout>2.8V
Time>Tmax/4
Iout<Iterm
Vout=CV
Start CV Mode
CHRGB Low
CHRGB High
Timer
Enabled?
Time>Tmax
Vout< CV-100mV
Pre-Charge
Timeout Fault
CHRGB blinks at 1Hz
Cleared by
Vbat>2.8V or
Re-cycle EN or VCC
NTC out of Range Fault
CHRGB blinks at 1Hz
Timer is frozen
Charge resumes when NTC
Temperature is valid
0oC > NTC Temp >50oC
CC=Constant Current
CV=Constant Voltage
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Time=0
Iout<Iterm
CHRGB High
Yes
Time>Tmax
Yes



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