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RT9470 Datasheet(PDF) 40 Page - Richtek Technology Corporation

Part # RT9470
Description  3A Single Cell Switching Battery Charger
PDF  50 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9470 Datasheet(HTML) 40 Page - Richtek Technology Corporation

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RT9470/D
Copyright © 2023 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
DS9470/D-02
October 2023
40
⚫
Charging Status Indicator (STAT Pin)
The device indicates IC_STAT on STAT pin. The
STAT pin is an open drain that can be used to drive
LED. The STAT pin function can be disable by
setting the STAT_EN = 0.
Table 7. STAT Pin State
IC_STAT
STAT Indicator
Trickle, Pre, Fast charge, IEOC-charge (EOC and TE = 0)
Low
Charge done, Back-Ground charge
High
HZ/SLEEP, VBUS ready for charge, OTG
High
Charge fault
Blinking at 1Hz
⚫
Interrupt to Host (INT Pin)
The device reports IRQ to host by the INT pin, which
is an open drain output.
The INT pin generates a pulse low with 256
s when
IRQ event occurs. All IRQ events are masked for
default setting.
When a fault occurs, the device pulses an INT to the
host and keeps IRQ event in register 0x20 to 0x23
until the host reads the IRQ registers. Before the host
reads IRQ registers to clean IRQ events, the device
would not send any INT pulse again unless any new
event occurs.
Table 8. STATUS, FLAG and MASK Register Map
Name
STAT
IRQ
MASK
VBUS_GD
Y
Y
Y
CHG_RDY
Y
Y
Y
IEOC
Y
Y
Y
BK_CHG
Y
Y
Y
CHG_DONE
Y
Y
Y
RECHG
N
Y
Y
DETACH
N
Y
Y
BC12_DONE
Y
Y
Y
MIVR
Y
Y
Y
AICR
Y
Y
Y
CHG_THREG
Y
Y
Y
CHG_BUSUV
Y
Y
Y
CHG_TOUT
Y
Y
Y
CHG_SYSOV
Y
Y
Y
CHG_BATOV
Y
Y
Y
JEITA_HOT
Y
Y
Y
JEITA_WARM
Y
Y
Y
JEITA_COOL
Y
Y
Y
JEITA_COLD
Y
Y
Y



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