RT9515 查看數據表（PDF） - Richtek Technology
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RT9515 Datasheet PDF : 11 Pages
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RT9515
Operation State Diagram for Charger function (RT9515)
UVLO <VIN < OVP
& EN = Low
& VIN > BATT
NO
Power Off State
PFET = OFF
Any State
if VIN < UVLO or
VIN > OVP or
EN = High or
VIN < BATT
VTS > 2.5V or
VTS < 0.5V
YES
BATT < 4.1V
NO
YES
BATT > 2.8V YES
Fast-CHG State
ICHG_F = 500mA
@RSET = 1.5kΩ
NO
Pre-CHG State
IPCHG
= 0.1 x ICHG_F
ICHG < 0.1 x
NO
ICHG_F
YES
Charge Done State
ICHG = 0A
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DS9515-01 April 2011
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