UC2525B 稳压脉宽调制器
UC2525B 描述
The UC1525B/1527B 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 +5.1V buried zener reference is trimmed to ±0.75% 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 provide a wide range of dead time adjustment. These devices also feature built-in soft-start circuitry with only an external timing capacitor required.
| |
UC1525B |
UC2525B |
UC3525B |
| Topology |
Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull |
Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull |
Boost, Buck, 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 |
16SOIC |
16PDIP, 16SOIC |
| Regulated Outputs(#) |
2 |
2 |
2 |
| Operating Temperature Range(°C) |
-55 to 125 |
-40 to 85 |
0 to 70 |
| Rating |
Military |
Catalog |
Catalog |
UC2525B 特性
- 8 to 35V Operation
- 5.1V Buried Zener Reference Trimmed to ±0.75%
- 100Hz to 500kHz 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
- Low Cross Conduction Output Stage
- Tighter Reference Specifications
UC2525B 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 |
| UC2525BDWTR |
ACTIVE |
-40 to 85 |
2.35 | 1ku |
SOIC (DW) | 16 |
2000 | LARGE T&R |
UC2525BDW |
| UC2525BDWTRG4 |
ACTIVE |
-40 to 85 |
2.35 | 1ku |
SOIC (DW) | 16 |
2000 | LARGE T&R |
UC2525BDW |
UC2525B 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 |
| UC2525BDWTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
UC2525BDWTR |
| UC2525BDWTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC2525BDWTRG4 |
UC2525BDWTRG4 |
UC2525B 应用技术支持与电子电路设计开发资源下载
- UC2525B 数据资料 dataSheet 下载.PDF
- TI 德州仪器AC/DC 和 DC/DC 电源产品选型与价格参考 . xls
- Dual MOSFET Driver
(PDF 498 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF
1305 KB)
- Analog-to-Digital Converter Grounding Practices Affect System
Performance (PDF 56 KB)
- Principles of Data Acquisition and Conversion (PDF 50 KB)
- Interleaving Analog-to-Digital Converters (PDF 64 KB)
- What
Designers Should Know About Data Converter Drift (PDF 95 KB)
- Giving Delta-Sigma Converters a Gain Boost with a Front End
Analog Gain Stage (PDF 70 KB)
- Programming Tricks for Higher Conversion Speeds Utilizing Delta
Sigma Converters (PDF 105 KB)
UC2525B 工具与软件
