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參數(shù)資料
| 型號： | AAT3682 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | Lithium-Ion/Polymer Linear Battery Charger |
| 中文描述： | 鋰離子線性電池充電器 |
| 文件頁數(shù)： | 12/18頁 |
| 文件大?。?/td> | 233K |
| 代理商： | AAT3682 |
AAT3682
Lithium-Ion/Polymer Linear Battery Charger
12
3682.2005.02.1.1
High-Speed Data Reporting
An optional system microcontroller interface can be
enabled by pulling the T2X pin up to 4.5V to 5.5V
during power-up sequence. The T2X pin should be
pulled high with the use of a 100k
resistor. If the
input supply to V
IN
will not exceed 5.5V, then the
T2X pin may be tied directly to V
IN
through a
100K
resistor. Since this is a TTL level circuit, it
may not be pulled higher than 5.5V without risk of
damage to the device.
When the high-speed data report feature is
enabled, the STAT output periods are sped up to
40μs, making the total status word 160μs in length.
See Figure 4 below.
An additional feature is the Output Status for the
Battery Not Detected state. When the AAT3682
senses there is no battery connected to the BAT
pin, the STAT pin cycles for two periods, then
remains off for two periods. When in High-Speed
Data Reporting, the AAT3682 will only trickle
charge at the 2X trickle charge level. This is
because the T2X pin is pulled high to enable the
high-speed data reporting. A status display LED
may not be connected to the STAT pin when the
high-speed data reporting is being utilized. If both
display modes are required, the display LED must
be switched out of the circuit before the T2X pin is
pulled high. Failing to do so could cause problems
with the high-speed switching control circuits inter-
nal to the AAT3682.
Charge Complete LED Status Mode
A simplified LED status can be obtained by config-
uring the AAT3682 for high-speed data recording
mode (T2X tied to V
CC
) and installing a 0.047μF
capacitor from the STAT pin to the V
SS
pin (see
Figure 5). In this configuration, the LED will be illu-
minated for all modes except the Sleep/Charge
Complete mode. In addition, the T2X input must be
tied to V
CC
through a 100k
resistor. In this mode,
the trickle charge current will be 1.8X the normal
trickle charge level. To reset the trickle charge cur-
rent to the 1X level, the T
S
input must be temporar-
ily toggled low. Removing C3 forces the LED status
to gradually dim out as the battery becomes fully
charged (see Figure 5).
Figure 4: Microcontroller Interface Logic Output.
Sleep / Charge Complete
Temp., OC, OV Fault
Battery Conditioning
Constant Current Mode
Constant Voltage Mode
HI / HI / HI / HI
LO / LO / HI / HI
LO / LO / LO / LO
LO / HI / HI / HI
LO / LO / LO / HI
Charge Status
Output Status
STAT Level
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相關(guān)代理商/技術(shù)參數(shù) |
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| AAT3683IOQ-4.2-2-DB1 | 制造商:Skyworks Solutions Inc 功能描述:AAT3683 Series 1 A Linear Li-Ion Battery Charger Evaluation Board |
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| AAT3683IVN-4.2-4-T1 | 制造商:Skyworks Solutions Inc 功能描述:POWER MANAGEMENT IC |
| AAT3684IOQ-4.2-1-T1 | 制造商:Skyworks Solutions Inc 功能描述:AAT3684 Series 6.5V 500mA Lithium-Ion / Polymer Battery Charger -STDFN2.2x2.2-10 |
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