参数资料
型号: A8483EEKTR-T
厂商: Allegro Microsystems Inc
文件页数: 4/10页
文件大小: 0K
描述: IC REG BOOST ADJ 0.35A 5MLP
标准包装: 1
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 可调至 35V
输入电压: 2.5 V ~ 10 V
PWM 型: 电流模式
频率 - 开关: 1.2MHz
电流 - 输出: 350mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 5-WDFN 裸露焊盘
包装: 剪切带 (CT)
供应商设备封装: 5-MLP/TDFN(3x3)
其它名称: 620-1101-1
A8483
1.2 MHz Step-up Converter
for Display Bias Supply
ELECTRICAL CHARACTERISTICS at T A = 25°C, V IN = 3 V (unless otherwise noted)
Characteristics
Input Voltage Range
Supply Current
Feedback Reference Voltage
Feedback Input Current
Switch Current Limit
Switch Frequency
Switch Maximum Duty Cycle
Switch Saturation voltage
Switch Leakage Current
Symbol
V IN
I SUP
V FB
I FB
I SWLIM
F SW
D
V CE(SAT)
I SL
Test Conditions
Active: I OUT = 15 mA, V OUT = 12 V
Shutdown (EN = 0 V)
V FB = 0.615 V
I SW = 0.2 A
V SW = 36 V
Min.
2.5
590
0.8
85
Typ.
2.5
0.1
615
50
350
1.2
90
350
Max.
10
3.5
1
640
100
1.6
5
Units
V
mA
μ A
mV
nA
mA
MHz
%
mV
μ A
Enable Input
Input Threshold Low
Input Threshold High
Input Leakage
V IL
V IH
Leakage
I IL
1.5
0.4
1
V
V
μ A
Operating Characteristics
(V IN = 3 V)
90
85
Efficiency versus Input Voltage
V OUT = 15 V; Toko 1098AS-100M Inductor
Feedback Bias Current versus Temperature
V FB = 0.615 V
65
80
75
70
I OUT (mA)
62
59
65
60
55
50
25
15
2
56
53
50
2
3
4
5
6
7
8
9
10
–50
0
50
100
150
V IN (V)
Switching Frequency versus Temperature
1.25
1.20
1.15
1.10
1.05
1.00
Temperature (°C)
Quiescent Supply Current versus Temperature
2.6
2.5
2.4
2.3
2.2
2.1
–50
0
50
100
150
–50
0
50
100
150
Temperature (°C)
Temperature (°C)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3
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