UC3823B 高速 PWM 控制器

UC3823B 描述

The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV. Current limit threshold is assured to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead time control. Frequency accuracy is improved to 6%. Startup supply current, typically 100 µA, is ideal for off-line applications. The output drivers are redesigned to actively sink current during UVLO at no expense to the startup current specification. In addition each output is capable of 2-A peak currents during transitions.

	UC2823B	UC3823B
Topology	Boost, Buck, Flyback, Forward	Boost, Buck, Flyback, Forward
Control Method	Current Mode	Current Mode, Voltage Mode
Duty Cycle(Max)(%)	100	100
Frequency(Max)(kHz)	1000	1000
UVLO Thresholds On/Off(V)	9.2/8.4	9.2/8.4
Pin/Package	16PDIP, 16SOIC	16PDIP, 16SOIC
Regulated Outputs(#)	1	1
Operating Temperature Range(°C)	-40 to 85	0 to 70
Rating	Military	Catalog

UC3823B 特性

• Improved versions of the UC3823/UC3825 PWMs
• Compatible with Voltage-Mode or Current-Mode Control Methods
• Practical Operation at Switching Frequencies to 1MHz
• 50-ns Propagation Delay to Output
• High-Current Dual Totem Pole Outputs (2-A Peak)
• Trimmed Oscillator Discharge Current
• Low 100-µA Startup Current
• Pulse-by-Pulse Current Limiting Comparator
• Latched Overcurrent Comparator With Full Cycle Restart

UC3823B 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
UC3823BDW	ACTIVE	0 to 70	6.75 | 1ku	SOIC (DW) | 16	40 | TUBE	UC3823BDW
UC3823BDWG4	ACTIVE	0 to 70	6.75 | 1ku	SOIC (DW) | 16	40 | TUBE	UC3823BDW
UC3823BDWTR	ACTIVE	0 to 70	6.10 | 1ku	SOIC (DW) | 16	2000 | LARGE T&R	UC3823BDW
UC3823BDWTRG4	ACTIVE	0 to 70	6.10 | 1ku	SOIC (DW) | 16	2000 | LARGE T&R	UC3823BDW
UC3823BN	ACTIVE	0 to 70	6.75 | 1ku	PDIP (N) | 16	25 | TUBE	UC3823BN
UC3823BNG4	ACTIVE	0 to 70	6.75 | 1ku	PDIP (N) | 16	25 | TUBE	UC3823BN

UC3823B 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
UC3823BDW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		UC3823BDW
UC3823BDWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	UC3823BDWG4	UC3823BDWG4
UC3823BDWTR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		UC3823BDWTR
UC3823BDWTRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	UC3823BDWTRG4	UC3823BDWTRG4
UC3823BN	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type		UC3823BN
UC3823BNG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	UC3823BNG4	UC3823BNG4

UC3823B 应用技术支持与电子电路设计开发资源下载

1. UC3823B 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)

UC3823B 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
UC3823B 评估模块	UC3823BEVM	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