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LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. Technical Brief
3.3.2. Charging
SM-POWER provides together with an external p-channel FET Siliconix Si3455 an external
AC-adapter a complete charge control function for charging of Li-Ion or Li-Ion-Polymer batteries.
Either a 1-cell Li-Ion or Li-Ion-Polymer battery with 4.1, 4.2 or 4.4 Volts may be used.
4.2V~3.73V 3.72V~3.59V 3.58V~3.49V 3.48V~3.35V
Figure 5. Battery Block Indication
1. Charging method : CC-CV
2. Charger detect voltage : 4.0 V
3. Charging time : 2h 40m
4. Charging current : 440 mA
5. CV voltage : 4.2 V
6. Cutoff current : 44 mA
7. Full charge indication current (icon stop current) : 44 mA
8. Recharge voltage : 4.16 V
9. Low battery alarm
a. Idle : 3.48 V ~ 3.35 V
b. Dedicated : 3.48 V ~ 3.35 V
10. Low battery alarm interval
a. Idle : 3 min
b. Dedicated : 1 min
11. Switch-off voltage : 3.35 V
12. Charging temperature adc range
a. ~ -5
℃
: low charging voltage operation (3.6 V ~ 3.9 V) .
b. -5
℃
~ 50
℃
: standard charging (up to 4.2 V)
c.
50
℃
~ : low charging voltage operation (3.6V ~ 3.9V)
Содержание AR140B
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