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Número de pieza
componentes Descripción
RT9505 Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT9505
Linear Single Cell Li-Ion Battery Charger IC
Richtek Technology
RT9505 Datasheet PDF : 11 Pages
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RT9505
RT9505 Flow Chart
Start-Up
ACIN
Power Up
V
EN
> 1.4V ?
NO
V
ACIN
> 6.5V or
V
ACIN
< 4.4V?
NO
V
ACIN
< V
BATT
?
NO
1ms Delay
Table
Precharge Phase
Fast Charge Phase
Standby/Fault
Recharge Phase
YES
YES
YES
DISABLE MODE
P-MOSFET OFF
I
BATT
= 0
OVP/UVP MODE
P-MOSFET OFF
I
BATT
= 0
SLEEP MODE
P-MOSFET OFF
I
BATT
= 0
V
TS
> 2.5V
or
V
TS
< 0.5V?
NO
V
BATT
> 2.8V?
NO
YES
YES
I
BATT
= 0.1 Charge
Current
/CHG_S Pull Down
TEMP
FAULT/CHG_S
HIGH
IMPEDANCE
I
BATT
= Charge
Current
/CHG_S Pull Down
YES
NO
V
BATT ~
4.2V,
I
BATT
< 0.1 I
CHG
?
YES
STANDBY
PFET OFF
V
BATT
= 4.2V,
I
BATT
= 0
RECHARGE
YES
V
BATT
> 4.1 V?
NO
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4
DS9505-02 April 2011
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