样片(一):TPS92691-Q1 具有轨到轨电流感测放大器的多拓扑 LED 驱动器
该样片是一款通用 LED 控制器,支持一系列升压或降压驱动器拓扑。该器件实现了固定频率峰值电流模式控制技术,可编程开关频率、斜坡补偿和软启动时序。其整合了高电压 (65V) 轨到轨电流感测放大器,从而可使用高侧或低侧串联感测电阻直接测量 LED 电流。该放大器可用于实现低输入偏移电压且在 25°C 至 140°C 结温范围和 0 至 60V 输出共模电压范围获得好于 ±3% 的 LED 电流精度。
样片(二):LDC0851 1.8-3.3V 电感式开关
该样片是一款近距离感应开关,是存在检测、事件计数和简易按钮等 应用 的理想选择。该器件包含的滞后功能可保证一个可靠的开关阈值,从而不受机械振动的影响。差分实现方案可防止因温度变化或湿度影响等环境因素而导致误触发。
样片(三):TPS62097具有可编程开关频率的 2A 降压转换器The TPS62097 device is a synchronous step-down converter optimized for high efficiency and noise critical applications. The devices focus on high efficiency conversion over a wide output current range. At medium to heavy loads, the converter operates in PWM mode and automatically enters Power Save Mode operation at light load. The switching frequency is selectable in the range of 1.5 MHz to 2.5 MHz by an external resistor. iDCS-Control is able to be operated in forced PWM mode for low noise operation with a fixed switching frequency.