參數(shù)資料
型號: SC805AMLTRT
廠商: Semtech Corporation
英文描述: Miniature Integrated High Current Lithium-Ion Battery Charger
中文描述: 微型集成高電流鋰離子電池充電器
文件頁數(shù): 15/17頁
文件大小: 566K
代理商: SC805AMLTRT
2007 Semtech Corp.
www.semtech.com
SC805A
5
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
SC805A 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
Start Timer
Soft Start Vout
Yes
En=Hi
Timer
Enabled
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
0
o
C > NTC Temp >50
o
C
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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