首页 > TI 德州仪器 > 电源管理 > AC/DC 和 DC/DC 电源

UC1846-SP 电流模式 PWM 控制器

	UC1846-SP
Control Method	Current Mode
Duty Cycle(Max)(%)	50
Frequency(Max)(kHz)	450
UVLO Thresholds On/Off(V)	7.7/6.95
Pin/Package	16CDIP, 20LCCC
Regulated Outputs(#)	2
Operating Temperature Range(°C)	-55 to 125
Rating	Space

UC1846-SP 描述

The UC1846 control devices provide all of the necessary features to implement fixed frequency, current mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel "power modules" while maintaining equal current sharing.

Protection circuitry includes built-in under-voltage lockout and programmable current limit in addition to soft start capability. A shutdown function is also available which can initiate either a complete shutdown with automatic restart or latch the supply off.

UC1846-SP 特性

• QML-V Qualified, SMD 5962-86806
• Rad-Tolerant: 30 kRad (Si) TID(1)
• Automatic Feed-Forward Compensation
• Programmable Pulse-by-Pulse Current Limiting
• Automatic Symmetry Correction in Push-Pull Configuration
• Enhanced Load Response Characteristics
• Parallel-Operation Capability for Modular Power Systems
• Differential Current-Sense Amplifier With Wide Common-Mode Range
• Double-Pulse Suppression
• 500-mA (Peak) Totem-pole Outputs
• ±1% Bandgap Reference
• Undervoltage Lockout
• Soft-Start Capability
• Shutdown Terminal
• 500-kHz Operation

UC1846-SP 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
5962-8680601V2A	ACTIVE	-55 to 125	214.69 | 100u	LCCC (FK) | 20	1 | TUBE	5962- 8680601V2A UC1846L QMLV
5962-8680601VEA	ACTIVE	-55 to 125	172.73 | 100u	CDIP (J) | 16	1 | TUBE	5962-8680601VE A UC1846JQMLV
5962-8680603V2A	ACTIVE	-55 to 125	240.45 | 100u	LCCC (FK) | 20	1 | TUBE	5962- 8680603V2A UC1846FK -SP
5962-8680603VEA	ACTIVE	-55 to 125	193.45 | 100u	CDIP (J) | 16	1 | TUBE	5962-8680603VE A UC1846J-SP

UC1846-SP 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
5962-8680601V2A	TBD	POST-PLATE	N/A for Pkg Type		5962-8680601V2A
5962-8680601VEA	TBD	A42	N/A for Pkg Type		5962-8680601VEA
5962-8680603V2A	TBD	POST-PLATE	N/A for Pkg Type		5962-8680603V2A
5962-8680603VEA	TBD	A42	N/A for Pkg Type		5962-8680603VEA

UC1846-SP 应用技术支持与电子电路设计开发资源下载

1. UC1846-SP 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)

UC1846-SP 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
用于音频转换器的软件驱动程序	CODECDRIVERS-SW	Texas Instruments	应用软件