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參數(shù)資料
| 型號(hào)： | AAT1142IWP-1.8-T1 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | 800mA Voltage-Scaling Step-Down Converter |
| 中文描述： | 800mA的電壓縮放降壓轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 4/22頁(yè) |
| 文件大?。?/td> | 982K |
| 代理商： | AAT1142IWP-1.8-T1 |
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Electrical Characteristics
1
L = 2.2μH, C
IN
= C
OUT
= 10μF, V
IN
= 3.6V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are
at T
A
= 25°C.
Symbol
Description
Conditions
Min
Typ
Max
Units
Step-Down Converter
V
IN
Input Voltage
2.7
5.5
2.7
V
V
V
IN
Rising
Hysteresis
V
IN
Falling
I
OUT
= 0mA to 800mA,
V
IN
= 2.7V to 5.5V
V
UVLO
UVLO Threshold
250
mV
V
2.0
V
OUT
Output Voltage Tolerance
-3.0
3.0
%
V
OUT
V
OUT
Programmable Range
Output Voltage Programming
Slew Rate
Quiescent Current
Shutdown Current
P-Channel Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
LX Leakage Current
0.6
2.0
V
V
SLEW
C
OUT
= 10μF
10
mV/μs
I
Q
No Load
EN/SET = AGND = PGND
35
70
1.0
μA
μA
A
Ω
Ω
μA
I
SHDN
I
LIM
R
DS(ON)H
R
DS(ON)L
I
LXLEAK
Δ
V
OUT
/
V
OUT
*
Δ
V
IN
R
OUT
T
S
F
OSC
F
SYNC
1.0
0.29
0.24
V
IN
= 5.5V, V
LX
= 0V to V
IN
1
Line Regulation
V
IN
= 2.7V to 5.5V
0.2
%/V
Output Impedance
Start-Up Time
Oscillator Frequency
SYNC Frequency Range
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
250
k
Ω
μs
MHz
MHz
From Enable to Output Regulation
100
2.2
1.0
3.0
T
SD
140
°C
T
HYS
15
°C
AAT1142
800mA Voltage-Scaling Step-Down Converter
4
1142.2006.07.1.0
1. The AAT1142 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.
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