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參數(shù)資料
| 型號(hào)： | AAT2550ISK-CAA-T1 |
| 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(yè)數(shù)： | 16/35頁(yè) |
| 文件大?。?/td> | 914K |
| 代理商： | AAT2550ISK-CAA-T1 |
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Current Limit and Over-Temperature
Protection
For overload conditions, the peak input current is
limited. To minimize power dissipation and stresses
under current limit and short-circuit conditions,
switching is terminated after entering current limit
for a series of pulses. Switching is terminated for
seven consecutive clock cycles after a current limit
has been sensed for a series of four consecutive
clock cycles.
Thermal protection completely disables switching
when internal dissipation becomes excessive. The
junction over-temperature threshold is 140°C with
15°C of hysteresis. Once an over-temperature or
over-current fault conditions is removed, the output
voltage automatically recovers.
Under-Voltage Lockout
The under-voltage lockout circuit prevents the
device from improper operation at low input volt-
ages. Internal bias of all circuits is controlled via the
VIN input. Under-voltage lockout (UVLO) guaran-
tees sufficient V
IN
bias and proper operation of all
internal circuitry prior to activation.
AAT2550
Total Power Solution for Portable Applications
16
2550.2006.07.1.0
System Operation Flow Chart
UVLO
V
P
> V
UVLO
Battery
Temp. Monitor
V
TS1
<TS<V
TS2
Preconditioning Test
V
MIN
> V
BAT
Current Phase Test
V
CH
> V
BAT
Voltage Phase Test
I
BAT
> I
MIN
Mode
Shutdown
No
No
Yes
Yes
Charge
Low Current
Conditioning
Temp. Fault
Battery
No
No
Mode
Current
Charging
Yes
Mode
Voltage
Charging
No
Yes
No
On
Switch
Yes
Yes
Completed
Charge
Recharge Test
V
RCH
> V
BAT
ADP
Yes
Timer
Charge
Safety
Set
Expire
Reset
Power On
Mode
Sleep
Power Select
ADPP
Output
No
Device Temp. Monitor
T
J
> 110
°
C
Yes
Fault
Conditions Monitor
OV, OT
Yes
Charging Mode
Thermal Loop
Current
Reduction in ADP
No
Thermal Loop
Loop Enable
Timing
Loop
ADP
ADP
Test
ADP > V
ADPP
No
Yes
No
Enable
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| AAT2550 | 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 |
|---|---|
| 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 |
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| AAT2554 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications |
| AAT2554IRN-CAP-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Total Power Solution for Portable Applications |
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