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电流模式PWM控制器,用于隔离型电源

SOT23通用离线式电源控制器

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Communicates at regular and overdrive 1-Wire speeds
  • Supports stiff 5V pullup for EEPROM, sensors, and crypto iButton®
  • Slew rate controlled 1-Wire timing and active pullup to accommodate long 1-Wire network lines and reduce radiation
  • Programmable 1-Wire timing and driver characteristics accommodate a wide range of 1-Wire network configurations
  • Low- to high-level command types, including macros, for generating 1-Wire communication
  • Crystal oscillator timebase provides precision timed 1-Wire waveforms
  • High-speed 12Mbps Universal Serial Bus (USB) interface
  • Integrated USB-compliant transceiver
  • Supports USB remote wake-up from a 1-Wire device event to resume a suspended host system
  • 0°C to +70°C operating temperature range

Applications/Uses

Description

The DS2490 is a bridge chip that enables communication between a USB host system and a 1-Wire® bus. It provides regular, overdrive, and flexible 1-Wire communication speeds and a full-speed 12Mbps connection to USB. USB vendor-specific commands defined in this specification are used to control the DS2490 and communicate with attached 1-Wire devices. A functional block diagram of the DS2490 is shown in Figure 1 of the full data sheet.

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .