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零件编号
产品描述 (功能)
DS2715Z 查看數據表(PDF) - Dallas Semiconductor -> Maxim Integrated
零件编号
产品描述 (功能)
生产厂家
DS2715Z
NiMH Battery Pack Charge Controller
Dallas Semiconductor -> Maxim Integrated
DS2715Z Datasheet PDF : 12 Pages
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Figure 2. STATE DIAGRAM
DS2715: NiMH Cell Pack Charge Controller
DS2715 State Diagram
V
DD
< V
UVLO
-V
UVLO-HYS
(asynchronously from
Discharge
Latch Set
anywhere)
Reset
Standby power
Check Rt, set mode
V
DD
> V
UVLO
Presence
TEST
Vch = Hi-Z
Vch = Hi-Z
Latch
Reset
LEDx = Hi-Z
Vbatt>1.65
LED Hi-Z= No Battery
4 Sec
Delay
t < PCTimeout
PreCHG
Vbatt > 1.65V
Discharge
Mode
Pwr=Low
AND
Vbatt < 1V
Vref = 0.033V
LED1 = Charging
30 min PCtimeout
Vbatt < 1.55V
AND
0C < T < 45C
OR
T < 0C
OR
T > 45C
LEDs = OFF
Vch = LOW
Discharge
Latch
Still Set?
t < Fast Timeout
Vbatt>1V
AND
T < PCTimeout
AND
T < 50C
t > PCTimeout
OR
T > 50
FAULT
Vch = Hi-Z
LED2 = Fault
Flash until Vbatt>1.65
Fast
CHARGE
Vref = 0.121V
LED1 = Charging
Overtemp, Overvoltage Detect
Vbatt > 1.65
Discharge latch set
dT/dt OR
t > Fast Timeout
t < Topoff Timeout
Topoff
CHARGE
Vref= 0033V
LED1 = Charging
T > 50
OR
t > Topoff Timeout
T > 50
DONE
Vbatt > 1.65
or
Vbatt < 1.0
Vch = Hi-Z
LED2 = DONE
Discharge latch set
Vbatt > 1.65
Discharge latch set
6 of 12
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