Analog Devices / Maxim Integrated MAX14900E 八通道、高速、高边开关
美信 MAX14900E 八通道、高速、高边开关为八通道电源开关，可逐通道配置为高边或推挽工作模式。该器件具有低传输延迟、高速率负载切换的特性，非常适用于下一代高速 PLC 系统。每个高边开关源出 850mA 连续电流，500mA 时具有达 165mΩ (最大值)的低导通电阻。驱动电阻负载时，高边开关的输入至输出传输延迟为 2μs (最大值)。推挽式操作的 PWM/PPO 控制中，开关频率高达 100kHz，可驱动长电缆。可将多个高边开关并联，实现更高的驱动电流。
特性
- Low power for high-density modules
- 3mA (max.) total supply current
- 165mΩ (max.) high-side RON at +125°C
- Extensive fault feedback eases maintenance and reduces installation time
- Global and per-channel diagnostics
- Open load/wire detection
- Thermal shutdown fault indication
- Output logic state feedback
- Undervoltage lockout
- Fast switching ideal for accurate, high-speed control systems
- 2μs propagation delays (high-side mode)
- 0.8μs propagation delays (push-pull mode)
- 100kHz (max.) push-pull mode switching rate
- Small packages with serial interface allows making high-density modules
- Daisy-chainable SPI minimizes isolation cost
- 7mm x 7mm, 48-pin QFN and TQFN packages
应用
- High-density digital output modules
- Motor controllers
- Programmable logic controllers
- PWM/PPO control
Functional Diagram
发布日期: 2015-04-14
| 更新日期: 2023-04-11