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UC2854BMDWREP PDF预览

UC2854BMDWREP

更新时间： 2024-11-27 11:08:07
品牌 Logo 应用领域
德州仪器 - TI 开关控制器开关式稳压器开关式控制器光电二极管电源电路开关式稳压器或控制器
页数 文件大小 规格书
13页 263K
描述
增强型产品高级高功率因数前置稳压器 | DW | 16 | -55 to 125

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UC2854BMDWREP 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP, SOP16,.4针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：0.81模拟集成电路 - 其他类型：POWER FACTOR CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：20 V最小输入电压：10 V
标称输入电压：18 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e4长度：10.3 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：125 °C
最低工作温度：-55 °C最大输出电流：12 A
标称输出电压：7.5 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP16,.4
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260电源：18 V
认证状态：Not Qualified座面最大高度：2.35 mm
子类别：Switching Regulator or Controllers最大供电电流 (Isup)：12 mA
最大供电电压 (Vsup)：20 V标称供电电压 (Vsup)：18 V
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：120 kHz温度等级：MILITARY
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.5 mm
Base Number Matches：1

UC2854BMDWREP 数据手册

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SGLS318 − NOVEMBER 2005  
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D
Fixed-Frequency Average Current-Mode  
Control  
FEATURES  
D
Controlled Baseline  
− One Assembly/Test Site, One  
Fabrication Site  
D
D
D
High Bandwidth (5 MHz), Low-Offset Current  
Amplifier  
Integrated Current- and Voltage Amplifier  
Output Clamps  
D
D
Extended Temperature Performance of −55°C  
to 125°C  
Enhanced Diminishing Manufacturing  
Sources (DMS) Support  
Multiplier Improvements: Linearity, 500 mV  
V
Offset (Eliminates External Resistor), 0 V  
AC  
to 5 V Multout Common-Mode Range  
V GOOD Comparator  
REF  
Faster and Improved Accuracy ENABLE  
Comparator  
D
D
D
Enhanced Product-Change Notification  
D
D
†
Qualification Pedigree  
Controls Boost PWM to Near-Unity Power  
Factor  
D
UVLO Options (16 V/10 V or 10.5 V/10 V)  
D
D
D
Limits Line Current Distortion To < 3%  
World-Wide Operation Without Switches  
Accurate Power Limiting  
D
300-µA Start-Up Supply Current  
†
Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range.  
This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST,  
electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this  
component beyond specified performance and environmental limits.  
DESCRIPTION  
The UC2854B products are pin compatible enhanced versions of the UC2854. Like the UC2854, these products  
provide all of the functions necessary for active power factor corrected preregulators. The controller achieves  
near unity power factor by shaping the ac-input line current waveform to correspond to the ac-input line voltage.  
To do this the UC2854B uses average current mode control. Average current mode control maintains stable,  
low distortion sinusoidal line current without the need for slope compensation, unlike peak current mode control.  
A 1% 7.5-V reference, fixed frequency oscillator, PWM, voltage amplifier with soft-start, line voltage feedforward  
(V  
squarer), input supply voltage clamp, and over current comparator round out the list of features.  
RMS  
The UC2854B is available in a DW (SOIC-Wide) package.  
The UC2854A/B products improve upon the UC2854 by offering a wide bandwidth, low offset current amplifier,  
a faster responding and improved accuracy enable comparator, a VREF GOOD comparator, UVLO threshold  
options (16 V/10 V for offline, 10.5 V/10 V for startup from an auxiliary 12-V regulator), lower startup supply  
current, and an enhanced multiply/divide circuit. New features like the amplifier output clamps, improved  
amplifier current sinking capability, and low offset VAC pin reduce the external component count while improving  
performance. Improved common mode input range of the multiplier output/current amplifier input allow the  
designer greater flexibility in choosing a method for current sensing. Unlike its predecessor, R  
oscillator charging current and has no effect on clamping the maximum multiplier output current. This current  
controls only  
SET  
is now clamped to a maximum of 2 × I at all times which simplifies the design process and provides foldback  
AC  
power limiting during brownout and extreme low line conditions.  
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Copyright 2005, Texas Instruments Incorporated  
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中文翻译

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UC2854BMDWREP 替代型号

型号 品牌 替代类型 描述 数据表
UC2854BMDWREPG4 TI

完全替代

 增强型产品高级高功率因数前置稳压器 | DW | 16 | -55 to 125

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