LT3431 High Voltage, 3A, 500kHz Step-Down Switching Regulator
The LT®3431 is a 500kHz monolithic buck switching regulator that accepts input voltages up to 60V. A high efficiency 3A, 0.1 Ohm switch is included on the die along with all the necessary oscillator, control and logic circuitry. A current mode architecture provides fast transient response and good loop stability.
Special design techniques and a new high voltage process achieve high efficiency over a wide input range. Efficiency is maintained over a wide output current range by using the output to bias the circuitry and by utilizing a supply boost capacitor to saturate the power switch. Patented circuitry maintains peak switch current over the full duty cycle range. A shutdown pin reduces supply current to 30µA and the device can be externally synchronized from 580kHz to 700kHz with logic level inputs.
The LT3431 is available in a thermally enhanced 16-pin TSSOP package
产品特点 Features
参数 |
应用
典型应用图 |
LT3431 订购信息和价格参考Package Variations and Pricing
| 器件型号 | 封装 | 引脚 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
| LT3431EFE | TSSOP | 16 | E | $7.07 | $4.95 |
| LT3431EFE#PBF | TSSOP | 16 | E | $7.07 | $4.95 |
| LT3431EFE#TR | TSSOP | 16 | E | $5.07 | |
| LT3431EFE#TRPBF | TSSOP | 16 | E | $5.07 | |
| LT3431EFE-1#PBF | TSSOP | 16 | E | $7.07 | $4.95 |
| LT3431EFE-1#TRPBF | TSSOP | 16 | E | $5.07 | |
| LT3431IFE | TSSOP | 16 | I | $8.13 | $5.69 |
| LT3431IFE#PBF | TSSOP | 16 | I | $8.13 | $5.69 |
| LT3431IFE#TR | TSSOP | 16 | I | $5.81 | |
| LT3431IFE#TRPBF | TSSOP | 16 | I | $5.81 | |
| LT3431IFE-1#PBF | TSSOP | 16 | I | $8.13 | $5.69 |
| LT3431IFE-1#TRPBF | TSSOP | 16 | I | $5.81 |
LT3431 数据手册及相关资料下载
- 数据手册(英文) : LT3431 - High Voltage, 3A, 500kHz Step-Down Switching Regulator.PDF
- 设计要点 (英文) : DN318 - Efficient Dual Polarity Output Converter Fits into Tight Spaces.PDF
- 设计要点 (中文) : DN318 Efficient Dual Polarity Output Converter Fits into Tight Spaces.PDF
- 可靠性数据 : R468 Reliability Data .PDF
