AAT3603 Datasheet, PDF (31/35 Pages) Advanced Analogic Technologies – Total Power Solution for Portable Applications

PRODUCT DATASHEET
AAT3603178
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_KEY 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_HOLD (going low) or if the BAT and CHGIN supply
are removed.
• If the part is turned on by connecting supply CHGIN
(and not through EN_KEY), then when the CHGIN is
removed, the part will shut down and all I²C registers
will be cleared.
• ISET Code 000 in Register 0x00, bits 2,3,4 = 100mA.
• If the part has been turned on by EN_KEY 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 I²_{C 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 the part was turned on with
EN_KEY, then when CHGIN is disconnected 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 4: 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 5: RCHG Bit Setting for the Battery Charger Recharge Voltage Level.
Timer
0
1
Charger Watchdog Timer
ON (default)
OFF (and reset to zero)
Table 6: Timer Bit Setting for the Charger Watchdog Timer.
3603.2008.06.1.0
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