AAT3601_08 Datasheet, PDF (32/37 Pages) Advanced Analogic Technologies – Total Power Solution for Portable Applications

PRODUCT DATASHEET
AAT3601178
Total Power Solution for Portable Applications
Notes concerning the operation of the CHG₂, CHG₁ and
CHG₀ bits or ISET code.
• Once the part is turned on using the EN_SYS pin (and
there is a BAT and/or CHGIN supply), and data is sent
through I²C, the I²C codes in the registers will always be
preserved until the part is shut down using the EN_PE
(going high) or if the BAT and CHGIN are removed.
• If the part is turned on by connecting CHGIN (and not
through EN_SYS), then when the CHGIN is discon-
nected, the part will shut down and all I²C registers
will be cleared.
If USE_USB = L,
• The charge current is set by the ISET code in Register
0x00, bits 2,3,4. (code 000 will equal 100%)
• If the part has been turned on by EN_SYS and CHGIN
is disconnected then reconnected, it will still contain
the code it had before (if it was 60% then it will
remain 60%).
• If the part has NOT been turned on by EN_SYS and
CHGIN is disconnected then reconnected, it will be
reset to 100% (since the whole part was shutdown).
If USE_USB = H,
• ISET Code 000 in Register 0x00, bits 2,3,4 = 100mA.
The other codes stay the same as if USE_USB = H.
• _{If the part has been turned on by EN_SYS and CHGIN}
is disconnected then reconnected, the ISET code will be
forced to 000 and the current will be set to 100mA.
• The next time any I²C register is programmed (even if
it is not for the ISET code), the ISET code will revert
back to what it was before. For example, if the ISET
code is set to 010 and USE_USB = H and the part was
turned on with EN_SYS, then when CHGIN is discon-
nected then reconnected, the charger will be set to
100mA. Then if any other command is sent, the ISET
code will remain 010.
Term₁
0
0
1
1
Term₀
0
1
0
1
Termination Current (as % of
Constant Current Charge)
5% (default)
10%
15%
20%
Table 5: Term Bit Setting for
the Termination Current Level.
RCHG₁
0
0
1
1
RCHG₀
0
1
0
1
Recharge Threshold
4.00V (default)
4.05V
4.10V
4.15V
Table 6: RCHG Bit Setting for
the Battery Charger Recharge Voltage Level.
Timer
0
1
Charger Watchdog Timer
ON (default)
OFF (and reset to zero)
Table 7: Timer Bit Setting for
the Charger Watchdog Timer.
LDO1₁
0
0
1
1
LDO2₁
0
0
1
1
LDO3₁
0
0
1
1
LDO4₁
0
0
1
1
LDO5₁
0
0
1
1
LDO1₀
0
1
0
1
LDO2₀
0
1
0
1
LDO3₀
0
1
0
1
LDO4₀
0
1
0
1
LDO5₀
0
1
0
1
LDO1 Output Voltage
3.40V (default)
2.88V
3.50V
3.09V
LDO2 Output Voltage
3.40V (default)
2.78V
3.09V
1.85V
LDO3 Output Voltage
1.24V (default)
1.29V
1.34V
2.88V
LDO4 Output Voltage
1.85V (default)
1.65V
1.24V
1.91V
LDO5 Output Voltage
1.85V (default)
1.75V
1.55V
1.91V
Table 8: LDO Bit Setting for
LDO Output Voltage Level.
SYS Bit
0
1
SYSOUT Power Source
If USE_USB=H, SYSOUT powered from BAT
If USE_USB=L, SYSOUT powered from CHGIN
SYSOUT always powered from BAT
Table 9: SYS Bit Setting for SYSOUT Power Path.
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