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參數(shù)資料
| 型號： | A8483EEKTR-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | 1.2 MHz Step-up Converter for Display Bias Supply |
| 中文描述： | 1.2 MHz的升壓轉(zhuǎn)換器，用于顯示偏壓電源 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 328K |
| 代理商： | A8483EEKTR-T |
A8483-DS, Rev. 1
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
1.2 MHz Step-up Converter for Display Bias Supply
A8483
3
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Input Voltage Range
V
IN
–
2.5
–
10
V
Supply Current
I
SUP
Active: I
OUT
= 15 mA, V
OUT
= 12 V
Shutdown (EN = 0 V)
–
2.5
3.5
mA
–
0.1
1
μ
A
Feedback Reference Voltage
V
FB
I
FB
I
SWLIM
F
SW
D
–
590
615
640
mV
Feedback Input Current
V
FB
= 0.615 V
–
–
50
100
nA
Switch Current Limit
–
350
–
mA
Switch Frequency
–
0.8
1.2
1.6
MHz
Switch Maximum Duty Cycle
–
85
90
–
%
Switch Saturation voltage
V
CE(SAT)
I
SL
I
SW
= 0.2 A
V
SW
= 36 V
–
350
–
mV
Switch Leakage Current
–
–
5
μ
A
Enable Input
Input Threshold Low
V
IL
V
IH
–
–
–
0.4
V
Input Threshold High
–
1.5
–
–
V
Input Leakage
Leakage
I
IL
–
–
1
μ
A
ELECTRICAL CHARACTERISTICS
at T
A
= 25°C, V
IN
= 3 V (unless otherwise noted)
Operating Characteristics
(V
IN
= 3 V)
Efficiency versus Input Voltage
V
OUT
= 15 V; Toko 1098AS-100M Inductor
V
FB
= 0.615 V
50
2
3
4
6
5
8
9
7
10
V
IN
(V)
E
Switching Frequency versus Temperature
1.00
1.05
1.10
1.15
1.20
1.25
Temperature (°C)
FS
Feedback Bias Current versus Temperature
50
53
56
59
62
65
–50
0
50
100
150
Temperature (°C)
IF
Quiescent Supply Current versus Temperature
2.1
2.2
2.3
2.4
2.5
2.6
Temperature (°C)
I
S
–50
0
50
100
150
–50
0
50
100
150
55
60
70
80
75
90
85
65
I
OUT (mA)
25
15
2
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