UC3527A 稳压脉宽调制器

UC3527A 描述

The UC1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1-V reference is trimmed to ±1% and the input common-mode range of the error amplifier includes the reference voltage, eliminating external resistors. A sync input to the oscillator allows multiple units to be slaved or a single unit to be synchronized to an external system clock. A single resistor between the CT and the discharge terminals provides a wide range of dead-time adjustment. These devices also feature built-in soft-start circuitry with only an external timing capacitor required.

	UC1527A	UC2527A	UC3527A
Topology	Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull	Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull	Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull
Control Method	Voltage Mode	Voltage Mode	Voltage Mode
Duty Cycle(Max)(%)	50	50	50
Frequency(Max)(kHz)	450	450	450
UVLO Thresholds On/Off(V)	7/6.8	7/6.8	7/6.8
Pin/Package	16CDIP, 20LCCC	16PDIP	16PDIP
Regulated Outputs(#)	2	2	2
Operating Temperature Range(°C)	-55 to 125	-40 to 85	0 to 70
Rating	Military	Catalog	Catalog

UC3527A 特性

• 8-V to 35-V Operation
• 5.1-V Reference Trimmed to ±1%
• 100-Hz to 500-kHz Oscillator Range
• Separate Oscillator Sync Terminal
• Adjustable Deadtime Control
• Internal Soft-Start
• Pulse-by-Pulse Shutdown
• Input Undervoltage Lockout With Hysteresis
• Latching PWM to Prevent Multiple Pulses
• Dual Source/Sink Output Drivers

UC3527A 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
UC3527AN	ACTIVE	-25 to 85	1.20 | 1ku	PDIP (N) | 16	20 | TUBE	UC3527AN
UC3527ANG4	ACTIVE	-25 to 85	1.20 | 1ku	PDIP (N) | 16	20 | TUBE	UC3527AN

UC3527A 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
UC3527AN	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type		UC3527AN
UC3527ANG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	UC3527ANG4	UC3527ANG4

UC3527A 应用技术支持与电子电路设计开发资源下载

1. UC3527A 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)

UC3527A 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
UC3527A 评估模块	UC3527AEVM	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