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SC802 bảng dữ liệu(PDF) 11 Page - Semtech Corporation

tên linh kiện SC802
Giải thích chi tiết về linh kiện  Fully Integrated Lithium-Ion Battery Charger System with Timer
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nhà sản xuất  SEMTECH [Semtech Corporation]
Trang chủ  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC802 bảng dữ liệu(HTML) 11 Page - Semtech Corporation

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© 2005 Semtech Corp.
www.semtech.com
SC802/SC802A
POWER MANAGEMENT
PRELIMINARY
State Diagram
Shutdown Mode
Vout/Iout off
CHRGB High Z
CPB Low
Soft Start CC Mode
Start Pre-Charge
Yes
OVP> Vin > UVLO
Iout=1500/Rprog
SC802:Iout=246/Rterm
SC802A:Iout=145/Rterm
Over Voltage, Under
Voltage, or Over
Temperature will force
the SC802 into
Shutdown Mode from
any state.
Monitor Mode
Vout=off
Float Charge Mode
Vout = CV
Yes
Soft Start Vout
Yes
En=Hi
BIPB=Low
Timer
Enabled?
Start Timer
Vout>2.8V
Time>Tmax/4
Iout<Iterm
Vout=CV
Start CV Mode
CHRGB Low
CHRGB High Z
Vout< CV-100mV
Pre-Charge
Timeout Fault
CHRGB blinks at 0.5Hz
Cleared by
Vbat>2.8V or
Re-cycle EN or VCC
NTC out of Range Fault
CHRGB blinks at 0.5Hz
Timer is frozen
Charge resumes when NTC
Temperature is valid
0C > NTC Temp >50C
CC=Constant Current
CV=Constant Voltage
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Start LDO Mode
Iout<Iterm
CHRGB High Z
Float Charge Mode
Vout = CV
Time>Tmax
Timer
Enabled?
Time>Tmax
Vout< CV-100mV
Yes
Yes
Yes
Shutdown Mode
Vout/Iout off
CHRGB High Z
CPB Low
Soft Start CC Mode
Start Pre-Charge
Yes
OVP> Vin > UVLO
Iout=1500/Rprog
SC802:Iout=246/Rterm
SC802A:Iout=145/Rterm
Over Voltage, Under
Voltage, or Over
Temperature will force
the SC802 into
Shutdown Mode from
any state.
Monitor Mode
Vout=off
Float Charge Mode
Vout = CV
Yes
Soft Start Vout
Yes
En=Hi
BIPB=Low
Timer
Enabled?
Start Timer
Vout>2.8V
Time>Tmax/4
Iout<Iterm
Vout=CV
Start CV Mode
CHRGB Low
CHRGB High Z
Vout< CV-100mV
Pre-Charge
Timeout Fault
CHRGB blinks at 0.5Hz
Cleared by
Vbat>2.8V or
Re-cycle EN or VCC
NTC out of Range Fault
CHRGB blinks at 0.5Hz
Timer is frozen
Charge resumes when NTC
Temperature is valid
0C > NTC Temp >50C
CC=Constant Current
CV=Constant Voltage
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Start LDO Mode
Iout<Iterm
CHRGB High Z
Float Charge Mode
Vout = CV
Time>Tmax
Timer
Enabled?
Time>Tmax
Vout< CV-100mV
Yes
Yes
Yes



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