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參數(shù)資料
| 型號： | AAT2505IWP-AQ-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | Dual Channel, Step-Down Converter/Linear Regulator |
| 中文描述： | 雙通道，降壓轉(zhuǎn)換器/線性穩(wěn)壓器 |
| 文件頁數(shù)： | 4/26頁 |
| 文件大?。?/td> | 854K |
| 代理商： | AAT2505IWP-AQ-T1 |
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Electrical Characteristics
1
V
IN
= V
LDO
= V
OUT(NOM)
+ 1V for V
OUT
options greater than 1.5V. V
IN
= V
LDO
= 2.5V for V
OUT
≤
1.5V. I
OUT
= 1mA,
C
OUT
= 2.2μF, C
IN
= 1μF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are T
A
= 25°C.
Symbol
Description
Conditions
Min
Typ
Max
Units
LDO
V
OUT
Output Voltage Tolerance
I
OUT
= 1mA T
A
= 25°C
to 300mA T
A
= -40°C to +85°C
-1.5
-2.5
V
OUT
+
V
DO
1.5
2.5
%
V
IN
Input Voltage
5.5
V
2
V
DO
Δ
V
OUT
/
V
OUT
* V
IN
Dropout Voltage
3, 4
I
OUT
= 300mA
400
600
mV
Line Regulation
V
IN
= V
OUT
+ 1V to 5V
0.09
%/V
Δ
V
OUT(Line)
Dynamic Line Regulation
I
OUT
= 300mA, V
IN
= V
OUT
+ 1V
to V
OUT
+ 2V, T
R
/T
F
= 2μs
I
OUT
= 1mA to 300mA, T
R
<5μs
V
OUT
> 1.3V
V
OUT
< 0.4V
V
IN
= 5V, No Load, ENLDO = V
IN
V
OUT
Rising, T
A
= 25°C
2.5
mV
Δ
V
OUT(Load)
I
OUT
I
SC
I
QLDO
V
POK
V
POKHYS
V
POK(OL)
I
POK
Dynamic Load Regulation
Output Current
Short-Circuit Current
LDO Quiescent Current
POK Trip Threshold
POK Hysteresis
POK Output Voltage Low
POK Output Leakage Current
60
mV
mA
A
μA
300
1
70
94
1.0
125
98
90
% of V
OUT
% of V
OUT
V
μA
I
SINK
= 1mA
V
POK
< 5.5V, V
OUT
in Regulation
V
IN
= 5V; ENLDO = GND,
EN = SGND = PGND
0.4
1.0
I
SHDN
Shutdown Current
1.0
μA
I
OUT
= 10mA
1kHz
10kHz
1MHz
65
45
42
PSRR
Power Supply Rejection Ratio
dB
T
SD
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Output Noise
Output Voltage Temperature
Coefficient
145
°C
T
HYS
15
°C
e
N
250
μV
RMS
T
C
22
ppm/°C
AAT2505
Dual Channel, Step-Down
Converter/Linear Regulator
4
2505.2006.06.1.1
1. The AAT2505 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
2. To calculate the minimum LDO input voltage, use the following equation: V
IN(MIN)
= V
OUT(MAX)
+ V
DO(MAX)
, as long as V
IN
≥
2.5V.
3. For V
OUT
< 2.1V, V
DO
= 2.5 - V
OUT
.
4. V
DO
is defined as V
IN
- V
OUT
when V
OUT
is 98% of nominal.
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