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RT9503 데이터시트(PDF) 4 Page - Richtek Technology Corporation

부품명 RT9503
상세설명  Fully Integrated Linear Single Cell Li-Ion Battery Charger with Power Path
PDF  15 Pages
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제조업체  RICHTEK [Richtek Technology Corporation]
홈페이지  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9503 데이터시트(HTML) 4 Page - Richtek Technology Corporation

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RT9503
4
DS9503-03 April 2011
www.richtek.com
Table
Start-Up
Precharge Phase
Fast Charge Phase
Standby/Fault
Recharge Phase
RT9503 Flow Chart
ACIN/USB
Power Up
V/CE > 1.4V ?
NO
NO
VACIN < 4.3V
and
VUSB < 3.9V?
DISABLE
MODE
PFET OFF
IBATT = 0
YES
UVP MODE
PFET OFF
IBATT = 0
YES
VACIN < VBATT
and
VUSB < VBATT?
SLEEP MODE
PFET OFF
IBATT = 0
YES
VBATT > 2.8V?
NO
IBATT = 0.1 Charge
Current
/CHG_S Strong Pull
Down
NO
?TCHARGE UP?
1ms Delay
&
Start Timer
VBATT > 2.8V?
NO
IBATT = Charge
Current
/CHG_S Strong
Pull Down
YES
YES
YES
NO
VTS > 2.5V
or
VTS < 0.5V?
TIME
FAULT
IBATT < 0.1 ICHG?
YES
TCHARGE UP?
NO
NO
YES
STANDBY
PFET OFF
IBATT = 0
YES
TEMP
FAULT
YES
/CHG_S HIGH
IMPEDANCE
VBATT > 4.1 V?
YES
VBATT > 4.1 V?
NO
RECHAR
GE
YES
NO
OVP
MODE
NO



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