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參數(shù)資料
| 型號： | AAT2550 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | Total Power Solution for Portable Applications |
| 中文描述： | 總功率便攜式應(yīng)用解決方案 |
| 文件頁數(shù)： | 21/35頁 |
| 文件大?。?/td> | 914K |
| 代理商： | AAT2550 |
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Data Timing
The system microcontroller should assert an active
low data request pulse for minimum duration of
200ns; this is specified by the S
QPULSE
. Upon sens-
ing the rising edge of the end of the data request
pulse, the AAT2550 status data control will reply the
data word back to the system microcontroller after a
delay defined by the data report time specification
T
DATA(RPT)
. The period of the following group of data
pulses will be defined by the T
DATA
specification.
AAT2550
Total Power Solution for Portable Applications
2550.2006.07.1.0
21
Timing Diagram
SQ
S
QPULSE
Data
System Reset
System Start
CK
T
SYNC
T
LAT
N=1
N=2
N=3
T
OFF
T
DATA(RPT)
= T
SYNC
+ T
LAT
< 2.5 P
DATA
T
OFF
DATA
P
DATA
Capacitor Selection
Input Capacitor
In general, it is good design practice to place a
decoupling capacitor between the ADP pin and
ground. An input capacitor in the range of 1μF to
22μF is recommended. If the source supply is
unregulated, it may be necessary to increase the
capacitance to keep the input voltage above the
under-voltage lockout threshold during device
enable and when battery charging is initiated.
If the AAT2550 adapter input is to be used in a sys-
tem with an external power supply source, such as
a typical AC-to-DC wall adapter, then a C
IN
capaci-
tor in the range of 10μF should be used. A larger
input capacitor in this application will minimize
switching or power bounce effects when the power
supply is "hot plugged."
Output Capacitor
The AAT2550 only requires a 1μF ceramic capac-
itor on the BAT pin to maintain circuit stability. This
value should be increased to 10μF or more if the
battery connection is made any distance from the
charger output. If the AAT2550 is to be used in
applications where the battery can be removed
from the charger, such as in the case of desktop
charging cradles, an output capacitor greater than
10μF may be required to prevent the device from
cycling on and off when no battery is present.
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| AAT2554IRN-CAQ-T1 | Total Power Solution for Portable Applications |
| AAT2554IRN-CAT-T1 | Total Power Solution for Portable Applications |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT2550_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications |
| AAT2550ISK-CAA-T1 | 制造商:Skyworks Solutions Inc 功能描述:Voltage Regulators - Switching Regulators 2 step-down conv + battery charger 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT2552 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications |
| AAT2552_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications |
| AAT2552IRN-CAE-T1 | 功能描述:電荷泵 Total Pwr Solution for Portable App RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
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