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A8483EEKTR-T PDF预览

A8483EEKTR-T

更新时间: 2024-02-28 09:55:00
品牌 Logo 应用领域
急速微 - ALLEGRO 转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管输出元件升压转换器
页数 文件大小 规格书
9页 328K
描述
1.2 MHz Step-up Converter for Display Bias Supply

A8483EEKTR-T 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:DFN
包装说明:HVSON, SOLCC6,.11,37针数:5
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.81
其他特性:OUTPUT VOLTAGE UP TO 35 V模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:10 V最小输入电压:2.5 V
标称输入电压:3 VJESD-30 代码:S-PDSO-N5
JESD-609代码:e3长度:3 mm
湿度敏感等级:1功能数量:1
端子数量:5最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:0.35 A
标称输出电压:12 V封装主体材料:PLASTIC/EPOXY
封装代码:HVSON封装等效代码:SOLCC6,.11,37
封装形状:SQUARE封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:0.8 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BOOST
最大切换频率:1600 kHz温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:NO LEAD
端子节距:0.95 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3 mm
Base Number Matches:1

A8483EEKTR-T 数据手册

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A8483  
1.2 MHz Step-up Converter  
for Display Bias Supply  
Package EK:  
MLP/TDFN, 3 × 3 mm  
0.75 mm Nominal Height  
The A8483 is a current mode step-up dc-to-dc converter,  
available in a 5-pin 3 mm × 3 mm thermally enhanced  
MLP/TDFN lead (Pb) free package. Smaller external  
componentsandintegrated36Vswitchreducecomponent  
count and footprint for a variety of applications.  
Approximate Scale 1:1  
FEATURES  
APPLICATIONS  
„
„
„
„
„
„
„
„
Output voltage up to 35 V  
2.5 to 10 V input  
0.9 to 18 V input with separate bias supply  
Delivers 15 V at 15 mA with 2.7 V input  
Constant 1.2 MHz switching frequency provides low noise  
350 mA switch current limit  
„
„
„
„
„
„
OLED bias supply/WLED backlight  
Portable battery-powered equipment  
Cellular phones  
PDAs (Personal Digital Assistant)  
Camcorders, personal stereos, MP3 players, cameras  
Mobile GPS systems  
1 μA shutdown current  
Low-noise PWM/analog dimming  
I
+ I = 15 mA  
OUT2  
OUT1  
V
OUT  
L1  
10 µH  
L1  
10 µH  
V
OUT1  
+12 V  
D1  
R1  
D1  
5
VIN  
1
SW  
5
VIN  
1
SW  
C3  
0.47 µF  
C2  
0.47 µF  
V
SUPPLY  
732 kΩ  
R1  
820 kΩ  
C1  
1 µF  
A8483  
V
C1  
1 µF  
A8483  
SUPPLY  
C2  
1 µF  
EN GND FB  
EN GND FB  
4
2
3
Li-ion  
2.5 V to  
5.5 V  
4
2
3
Li-ion  
2.5 V to  
5.5 V  
V
OUT2  
–12 V  
Enable  
Enable  
D2  
R2  
39 kΩ  
R2  
39 kΩ  
C4  
0.47 µF  
Figure 2. Small LCD Bias Supply. Li+ battery to ±12 V.  
Figure 1. OLED Bias Supply. Use for cell phones, MP3  
players, DSCs, and PDAs.  
32 V, 18 mA  
25 V, 25 mA  
32 V, 40 mA  
25 V, 80 mA  
Connect either V or V  
Z
V
OUT  
BIAS  
V
OUT  
L1  
10 µH  
L1  
22 µH  
D1  
D1  
5
VIN  
1
SW  
1
SW  
VZ  
7.5 V  
R1  
768 kΩ for  
R1  
768 kΩ for  
VIN  
V
V
C1  
1 µF  
A8483  
A8483  
SUPPLY  
C2  
1 µF / 50 V  
SUPPLY  
C2  
1 µF / 50 V  
5
V
OUT = 32 V  
VOUT = 32 V  
C1  
1 µF  
EN GND FB  
EN GND FB  
V
BIAS  
604 kΩ for  
OUT = 25 V  
604 kΩ for  
VOUT = 25 V  
12 V  
5 V  
4
2
3
V
4
2
3
Enable  
Enable  
5 V  
R2  
15 kΩ  
R2  
15 kΩ  
C3  
0.1 µF  
Figure 3. LCD TV, Plasma TV Bias, FED Display,  
Varactor Diode Bias. Using 5 V input.  
Figure 4. LCD TV, Plasma TV Bias, FED Display,  
Varactor Diode Bias. Using 12 V input.  
V
OUT  
V
OUT  
L1  
10 µH  
L1  
10 µH  
D1  
D1  
5
VIN  
1
SW  
5
VIN  
1
SW  
R1  
560 kΩ  
C2  
0.22 µF  
C2  
1 µF  
V
V
C1  
1 µF  
A8483  
A8483  
C1  
1 µF  
SUPPLY  
SUPPLY  
R3  
24 kΩ  
EN GND FB  
EN GND FB  
V
C
Li-ion  
2.5 V to  
5.5 V  
4
2
3
4
2
3
Li-ion  
2.5 V to  
5.5 V  
Analog Voltage or  
PWM  
Cf  
1 nF  
Enable  
Enable  
R2  
5 kΩ  
R1  
47 Ω  
R3  
160 kΩ  
R2  
47 kΩ  
Cf  
0.01 µF  
Analog Voltage or  
PWM 10 kHz  
Cf for PWM dimming only  
V
C
Figure 5. WLED Backlighting.  
Figure 6. OLED Bias Supply. Use for low-noise PWM  
dimming, or with analog voltage through the FB pin.  
A8483-DS, Rev. 1  

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