AAT3603 datasheet(31/35 Pages) ANALOGICTECH

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AAT3603178

Total Power Solution for Portable Applications

PRODUCT DATASHEET

3603.2008.06.1.0

www .analogictech.com

AAT3603178

Total Power Solution for Portable Applications

PRODUCT DATASHEET

3603.2008.06.1.0

www .analogictech.com

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 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 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

Term0

Termination Current (as % of Constant Current Charge)

5% (default)

10%

15%

20%

Table 4: Term Bit Setting for the Termination Current Level.

RCHG1

RCHG0

Recharge Threshold

4.00V (default)

4.05V

4.10V

4.15V

Table 5: RCHG Bit Setting for the Battery Charger Recharge Voltage Level.

Timer

Charger Watchdog Timer

ON (default)

OFF (and reset to zero)

Table 6: Timer Bit Setting for the Charger Watchdog Timer.

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