开关稳压器 LNB voltage regulator with I2C interface in FCCM mode 20-WQFN -40 to 85
Designed for analog and digital satellite receivers, the TPS65235-1 is a monolithic voltage regulator with I2C interface; specifically to provide the 13-V to 18-V power supply and the 22-kHz tone signal to the LNB down converter in the antenna dish or to the multi-switch box. It offers a complete solution with minimum component count, low power dissipation together with simple design and I2C standard interface.
TPS65235-1 features high power efficiency. The boost converter integrates a 140-mΩ power MOSFET running at 1 MHz or 500 kHz selectable switching frequency. Drop out voltage at the linear regulator is 0.8 V to minimize power loss. TPS65235-1 provides multiple ways to generate the 22 kHz signal. Integrated linear regulator with push-pull output stage generates 22-kHz tone signal superimposed at the output even at zero loading. Current limit of linear regulator can be programmed by external resistor with ±10% accuracy. Full range of diagnostic read by I2C is available for system monitoring.
TPS65235-1 has a special design at FCCM mode to avoid the audible noise especially when VIN is higher or closer to the VLNB output.
TPS65235-1 supports advanced DiSEqC 2.x standard with 22-kHz tone detection circuit and output interface.
输出接口数 1
输出电压 11V ~ 20V
输出电流 1 A
静态电流 5 mA
开关频率 500kHz, 1MHz
开关电流 3 A
输入电压Max 20 V
输入电压Min 4.5 V
输出电流Max 1 A
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 4.5V ~ 20V
输入电压 20 V
安装方式 Surface Mount
引脚数 20
封装 WQFN-20
封装 WQFN-20
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 无铅
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
TPS65235-1RUKT TI 德州仪器 | 当前型号 | 当前型号 |
TPS65235-1RUKR 德州仪器 | 功能相似 | TPS65235-1RUKT和TPS65235-1RUKR的区别 |