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RT5021 数据表(PDF) 54 Page - Richtek Technology Corporation

部件名 RT5021
功能描述  Channels DC/DC PMU with Li-ion Battery Charger
PDF  67 Pages
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制造商  RICHTEK [Richtek Technology Corporation]
网页  http://www.richtek.com
标志 RICHTEK - Richtek Technology Corporation

RT5021 数据表(HTML) 54 Page - Richtek Technology Corporation

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RT5021
54
DS5021-01 April 2013
www.richtek.com
Copyright
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
©
Address
Name
Register Address
Bit7
(MSB)
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
(LSB)
Meaning
JEITA
VSETH
VSETC
ISETH
ISETC
CHGSTEN
INT
DPM
Default
0
0
0
0
0
1
0
0
A9
0x09
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
BAT charge current and regulation voltage control scheme.
JEITA = 0, it means the charger operation is automatic (JEITA rule).
JEITA, VSETH,
VSETC, ISETH, ISETC
JEITA = 1, User can set the VSETH/VSETC to decide the BAT regulate voltage
and set ISETH/ISETC to decide the BAT charge current level. The control
scheme is listed as below.
Used to control CHG pin status.
0 : See FLSH set.
CHGSTEN
1 : Base on charging status.
CHGSTEN = 0 (A9.bit2 = 0)
Charging Status
CHGSTEN = 1
(A9.bit2 = 1)
FLST = 1
(A5.bit7 = 1)
FLST = 0
(A5.bit7 = 0)
No Charging/
Charging Finish
High impedance
(No flashing)
Pre-Charge/
Fast Charge
0.5Hz (2s)
Abnormal (Fault timer
timeout, in thermal
regulation, battery too
cold or too hot
4Hz (0.25s)
High
Impedance
Low
Control the output of INT open drain port. The bit value is inverted of INT output.
When interrupt events happen, INT port goes low and this bit A9. INT would be
triggered to 1. Micro-processor must write this bit to be 0 for making INT go high.
0 : INT = High
INT
1 : INT = Low
The DPM bit is the charger VIN DPM status bit. It means the charger DPM (VIN
falls and regulates at 4.35V) is activated or not.
0 : VIN DPM not activated.
1 : VIN DPM activated (working).
DPM
Note : when PMU turns on, it would check the bit DPM and compare to the value
0. If it is different, INT would be asserted. After PMU is on, once DPM bit toggles,
INT also asserts again.



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