BQ24160 Datasheet, PDF (28/44 Pages) Texas Instruments – 2.5A, Dual-Input, Single Cell Switchmode Li-Ion Battery Charger with Power Path

bq24160, bq24161
bq24163, bq24168
SLUSAO0A – NOVEMBER 2011 – REVISED MARCH 2012
REGISTER DESCRIPTION
Status/Control Register (READ/WRITE)
Memory location: 00, Reset state: 0xxx 0xxx
BIT
B7 (MSB)
B6
B5
B4
B3
B2
B1
B0 (LSB)
NAME
TMR_RST
STAT_2
STAT_1
STAT_0
SUPPLY_SEL
FAULT_2
FAULT_1
FAULT_0
Read/Write FUNCTION
Read/Write Write: TMR_RST function, write “1” to reset the watchdog timer (auto clear)
Read: Always 0
(bq24160/1/3 only)
Read only
Read only
Read only
000- No Valid Source Detected
001- IN Ready (shows preferred source when both connected)
010- USB Ready (shows preferred source when both connected)
011- Charging from IN
100- Charging from USB
101- Charge Done
110- NA
111- Fault
Read/Write 0-IN has precedence when both supplies are connected
1-USB has precedence when both supplies are connected (default 0)
Read only
Read only
Read only
000-Normal
001- Thermal Shutdown
010- Battery Temperature Fault
011- Watchdog Timer Expired (bq24160/1/3 only)
100- Safety Timer Expired (bq24160/1/3 only)
101- IN Supply Fault
110- USB Supply Fault
111- Battery Fault
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SUPPLY_SEL Bit (Supply Precedence Selector)
The SUPPLY_SEL bit selects which supply has precedence when both supplies are present. In cases
where both supplies are connected, they must remain isolated from each other which means only one
is allowed to charge the battery. Write a “1” to SUPPLY_SEL to select the USB input to have
precedence. Write a “0” to select the IN input.
Battery/ Supply Status Register (READ/WRITE)
Memory location: 01, Reset state: xxxx 0xxx
BIT
B7 (MSB)
B6
B5
B4
B3
B2
B1
B0 (LSB)
NAME
INSTAT1
INSTAT0
USBSTAT1
USBSTAT0
OTG_LOCK
BATSTAT1
BATSTAT0
EN_NOBATOP
Read/Write
Read Only
Read Only
Read Only
Read Only
Read/Write
Read Only
Read Only
Read/ Write
FUNCTION
00-Normal
01-Supply OVP
10-Weak Source Connected (No Charging)
11- V_IN<V_UVLO
00-Normal
01-Supply OVP
01-Weak Source Connected (No Charging)
11- V_USB<V_UVLO
0 – No OTG supply present. Use USB input as normal.
1 – OTG supply present. Lockout USB input for charging.
(default 0)
00-Battery Present and Normal
01-Battery OVP
10-Battery Not Present
11- NA
0-Normal Operation
1-Enables No Battery Operation when termination is disabled (default 0)
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