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參數(shù)資料
| 型號： | AAT1145IDE-0.6-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | 1.2A Step-Down Converter |
| 中文描述： | 1.2A的降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大小： | 307K |
| 代理商： | AAT1145IDE-0.6-T1 |
AAT1145
1.2A Step-Down Converter
SwitchReg
TM
PRODUCT DATASHEET
4
1145.2007.11.1.1
w w w . a n a l o g i c t e c h . c o m
Electrical Characteristics
1
V
IN
= 3.6V, T
A
= -40°C to +85°C unless otherwise noted; typical values are T
A
= 25°C.
Symbol
V
IN
V
OUT
Description
Input Voltage Range
2
Output Voltage Range
Input DC Supply
Current
Feedback Input Bias Current
Conditions
Min
2.5
0.6
Typ
Max
5.5
V
IN
500
1
30
0.6120
0.6135
0.6150
Units
V
V
μ
A
μ
A
nA
I
Q
Active Mode
Shutdown Mode
V
FB
= 0.5V
V
EN
= 0V, V
AIN
= 5.5V
V
FB
= 0.65V
T
A
= 25°C
T
A
= 0°C
≤
T
A
≤
85°C
T
A
= -40°C
≤
T
A
≤
85°C
300
0.1
I
FB
V
FB
Regulated Feedback Voltage
3
0.5880
0.5865
0.5850
0.6000
0.6000
0.6000
V
Δ
V
LINEREG
/
Δ
IN
Δ
V
LOADREG
/
Δ
OUT
V
FB
V
OUT
F
OSC
T
S
Line Regulation
V
IN
= 2.5V to 5.5V, I
OUT
= 10mA
0.10
0.20
%/V
Load Regulation
I
OUT
= 10mA to 1200mA
0.50
%/A
Output Voltage Accuracy
V
IN
= 2.5 to 4.2V, I
OUT
= 10 to 1200mA
-3
+3
%
Oscillator Frequency
Startup Time
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Peak Switch Current
P-CH MOSFET
N-CH MOSFET
Enable Threshold Low
Enable Threshold High
Input Low Current
V
FB
= 0.6V
From Enable to Output Regulation
1.2
1.5
1.3
1.8
MHz
ms
T
SD
170
°C
T
HYS
10
°C
I
LIM
2.5
135
95
A
R
DS(ON)
V
IN
= 3.6V
V
IN
= 3.6V
200
150
0.3
m
Ω
V
EN(L)
V
EN(H)
I
EN
V
V
μ
A
1.5
-1.0
V
IN
= V
EN
= 5.5V
1.0
1. The AAT1145 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
2. V
should be not less than V
+ V
, where V
= I
· (R
+ ESR
), typically V
= 0.3V.
3. The regulated feedback voltage is tested in an internal test mode that connects V
FB
to the output of the error amplifier.
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