參數(shù)資料
型號(hào): SC805EVB
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(yè)數(shù): 5/15頁(yè)
文件大小: 294K
代理商: SC805EVB
13
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
Time=0
Iout<Iterm
CHRGB High
Yes
Time>Tmax
Yes
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