LT1950 Single Switch PWM Controller with Auxiliary Boost Converter
The LT®1950 is a wide input range, forward, boost, flyback and SEPIC controller that drives an N-channel power MOSFET with few external components required.
A resistor programmable duty cycle clamp can be used to generate a volt-second clamp for forward converter applications. An internal boost switcher is available for creating a separate supply for the output gate driver, allowing 10V gate drive from input voltages as low as 3V. The LT1950’s operating frequency can be set with an external resistor over a 100kHz to 500kHz range and a SYNC pin allows the part to be synchronized to an external clock. Additional programmability exists for leading edge blanking and slope compensation.
A fast current sense comparator achieves 60ns current sense delay and the error amplifier is a true voltage mode error amplifier, allowing a wide range of compensation networks. An accurate shutdown pin with programmable hysteresis is available for undervoltage lockout and shutdown. The LT1950 is available in a small 16-Pin SSOP package
产品特点 Features
|
应用
典型应用图
参数 |
LT1950 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) * |
| LT1950EGN | SSOP | 16 | E | $4.20 | $2.90 |
| LT1950EGN#PBF | SSOP | 16 | E | $4.20 | $2.90 |
| LT1950EGN#TR | SSOP | 16 | E | $2.96 | |
| LT1950EGN#TRPBF | SSOP | 16 | E | $2.96 | |
| LT1950IGN | SSOP | 16 | I | $4.73 | $3.20 |
| LT1950IGN#PBF | SSOP | 16 | I | $4.73 | $3.20 |
| LT1950IGN#TR | SSOP | 16 | I | $3.26 | |
| LT1950IGN#TRPBF | SSOP | 16 | I | $3.26 |
LT1950 数据手册及相关资料下载
- 数据手册(英文) : LT1950 - Single Switch PWM Controller with Auxiliary Boost Converter.PDF
- 可靠性数据 : R293 Reliability Data .PDF
