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參數(shù)資料
| 型號(hào)： | AAT1275ITP-5.0-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Boost Converter with USB Power Switch |
| 中文描述： | 加強(qiáng)與USB電源開(kāi)關(guān)轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 4/19頁(yè) |
| 文件大?。?/td> | 467K |
| 代理商： | AAT1275ITP-5.0-T1 |
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Electrical Characteristics
1
V
CC
= V
IN
= 3.6V, V
OUT1
= 5V, 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
V
IN,
V
CC
V
OUTx
V
UVLO
Operating Input Voltage Range
Maximum Output Voltage Range
Under-Voltage Lockout
2.7
5.0
5.5
2.7
V
V
V
I
Q
Quiescent Supply Current
No Load, Switching
No Load, Not Switching, V
FB
= 1.5V
EN = GND
100
45
μA
90
1.0
I
SHDN
Shutdown Current
μA
Boost Converter
I
O
I
LIMIT
V
FB
Continuous Output Current
Input Switch Current Limit
FB Pin Regulation
3V < V
IN
< 5V, V
O
= 5V
500
mA
A
V
2.5
0.6
No Load, T
A
= 25°C
I
LOAD
= 0 to 500mA,
V
IN
= 2.7V to 5V
0.591
0.609
V
OUT
Output Voltage Tolerance
-3
3
%
Δ
V
OUT
(V
OUT
*
Δ
V
IN
)
Δ
V
OUT
/V
OUT
R
DS(ON)H
R
DS(ON)L
R
DS(ON)_IN
Load Regulation
I
LOAD
= 0 to 500mA
0.005
%/mA
Line Regulation
High Side Switch On Resistance
Low Side Switch On Resistance
Input Disconnect Switch
V
IN
= 2.7V to 5V
V
OUT1
= 5V, I
OUT1
= 500mA
V
OUT1
= 5V, I
OUT1
= 500mA
V
OUT1
= 5V, I
OUT1
= 500mA
From Enable to Output
Regulation
I
OUT1
= 250mA, L = 2.2μH,
V
IN
= 3.6V, V
OUT1
= 5V
T
A
= 25°C, I
OUT1
= 500mA,
V
IN
= 3.6V, V
OUT1
= 5V
0.2
200
170
170
%/V
m
Ω
m
Ω
m
Ω
T
SS
Soft-Start Time
300
μs
η
Efficiency
90
%
F
OSC
Switching Frequency
2.0
MHz
Load Switch
R
DS(ON)
I
LIM
I
LIM(MIN)
T
RESP
T
ON
T
OFF
V
FLT_LOW
I
FLT
T
BLANK
Control
V
TH-L
V
TH-H
I
EN
T
J-TH
T
J-HYS
Current Limit Switch On Resistance
Current Limit
Minimum Current Limit
Current Limit Response Time
Turn-On Delay Time
Turn-Off Delay Time
FLT Logic Output Low
FLT Logic Output High Leakage Current
Fault Blanking Time
V
OUT1
= 5V, T
A
= 25°C
0.2
625
Ω
mA
mA
μs
ms
μs
V
μA
ms
500
100
0.4
4
10
V
OUT1
= 5V
V
OUT1
= 5V, R
L
= 10
Ω
V
OUT1
= 5V, R
L
= 10
Ω
I
SINK
= 1mA
V
FAULT
= 5V
Rising and Falling Edge
0.4
1
0.5
4
EN Threshold Low
EN Threshold High
EN Input Leakage
TJ Thermal Shutdown Threshold
TJ Thermal Shutdown Hysteresis
0.4
V
V
μA
°C
°C
1.4
-1
V
EN
= 5V, V
IN
= 5V
1
140
15
AAT1275
Boost Converter with USB Power Switch
4
1275.2007.01.1.3
1. The AAT1275 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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