UCC2819 BiCMOS 功率因子前置稳压器

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	UCC2819
UVLO Thresholds On/Off(V)	10.2/9.7
Operating Supply(Max)(V)	17
Startup Current(mA)	0.15
Operating Supply Current(mA)	4
Vref(V)	7.5
Vref tol(%)	1.5
Duty Cycle(Max)(%)	100
Practical Operating Frequency(Max)(MHz)	0.25
Pin/Package	16PDIP
Rating	Catalog

UCC2819 描述

The UCC2819/UCC3819 provides all 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 that of the ac-input line voltage. Average current mode control maintains stable, low distortion sinusoidal line current.

Designed in Texas Instrument’s BiCMOS process, the UCC3819 offers new features such as lower start-up current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry and a leading-edge modulation technique to reduce ripple current in the bulk capacitor.

The UCC2819 allows the output voltage to be programmed by bringing out the error amplifier noninverting input

UCC2819 特性

• Controls Boost Preregulator to Near-Unity Power Factor
• World Wide Line Operation
• Over-Voltage Protection
• Accurate Power Limiting
• Average Current Mode Control
• Improved Noise Immunity
• Improved Feed-Forward Line Regulation
• Leading Edge Modulation
• 150-uA Typical Start-Up Current
• Low-Power BiCMOS Operation
• 10.8-V to 17-V Operation
• Programmable Output Voltage (Tracking Boost Topology)

UCC2819 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
UCC2819N	ACTIVE	-40 to 85	1.35 | 1ku	PDIP (N) | 16	25 | TUBE	UCC2819N
UCC2819NG4	ACTIVE	-40 to 85	1.35 | 1ku	PDIP (N) | 16	25 | TUBE	UCC2819N

UCC2819 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
UCC2819N	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type		UCC2819N
UCC2819NG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	UCC2819NG4	UCC2819NG4

UCC2819 应用技术支持与电子电路设计开发资源下载

1. UCC2819 数据资料 dataSheet 下载.PDF
2. TI 德州仪器AC/DC 和 DC/DC 电源产品选型与价格参考 . xls
3. Dual MOSFET Driver (PDF 498 KB)
4. 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
5. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
6. 所选封装材料的热学和电学性质 (PDF 645 KB)
7. 高速数据转换 (PDF 1967 KB)
8. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
9. Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
10. Principles of Data Acquisition and Conversion (PDF 50 KB)
11. Interleaving Analog-to-Digital Converters (PDF 64 KB)
12. What Designers Should Know About Data Converter Drift (PDF 95 KB)
13. Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
14. Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)

UCC2819 工具与软件

名称	型号	公司	工具/软件类型
音频的快速搜索选择工具	AUDIO_SELECTION_TOOL	Texas Instruments	免费评估工具
UCC2819 评估模块	UCC2819EVM	Texas Instruments	开发电路板/EVM
用于音频转换器的软件驱动程序	CODECDRIVERS-SW	Texas Instruments	应用软件