UCD9080
- Single Supply Voltage: 3.3 V
- Low Power Consumption
- Sequences and Monitors up to Eight Voltage Rails
- Rail Voltages Sampled Every 50 µs With 3.2-mV Resolution
- Four Configurable Digital Outputs for Power-On Reset and Other Functions
- Configurable Rail-Enable Output Polarity
- Flexible Rail Sequencing: Timeline (ms), Parent Rail Regulation Window, Parent Rail Achieving Defined Threshold
- Under- and Overvoltage Thresholds: Settable Per-Rail
- Regulation Expiration Time: Settable Per-Rail
- Flexible Rail Shutdown: Parent Rail Shutdown Can Shut Down Child Rails, Independent Rail Configuration
- Per-Rail Alarm Conditions, With Timestamp: Under- and Overvoltage Glitch, Sustained Under- and/or Overvoltage, Rail Did Not Start
- I2C Interface for Configuration and Monitoring
- Microsoft™ Windows™ GUI for Configuration and Monitoring
- APPLICATIONS
- Telecommunications Switches
- Servers
- Networking Equipment
- Test Equipment
- Any System Requiring Sequencing of Multiple Voltage Rails
TMS320 is a trademark of Texas Instruments.
Microsoft, Windows are trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.
The UCD9080 power-supply sequencer controls the enable sequence of up to eight independent voltage rails and provides four general-purpose digital outputs. The device operates from a 3.3-V supply, provides 3.2-mV resolution of voltage rails, and requires no external memory or clock. The UCD9080 monitors the voltage rails independently at more than a 20-kHz rate and has a high degree of rail sequence and rail error-response configurability. The sequencing of rails can be based on timed events or on timed events in conjunction with other rails achieving regulation or a voltage threshold. In addition, each rail is monitored for undervoltage and overvoltage glitches and thresholds. Each rail the UCD9080 monitors can be configured to shut down a user-defined set of other rails, and alarm conditions are monitored on a per-rail basis.
Figure 1 shows the UCD9080 power-supply sequencer in a typical application.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | 8-Channel Power Supply Sequencer and Monitor 数据表 (Rev. E) | 2008-5-6 | |||
| 应用手册 | Communicating With the UCD9081; Unpowered, in System | 2008-12-22 | ||||
| 应用手册 | Monitoring Fan Tachometers using the UCD908x Devices | 2008-10-17 | ||||
| 用户指南 | UCD9080 Power Supply Sequencer and Monitor EVM (Rev. A) | 2008-2-7 | ||||
| 应用手册 | Programming the UCD9080 | 2007-12-10 | ||||
| 应用手册 | Expanded System Monitoring Functions with UCD9080 (Rev. A) | 2007-11-5 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
UCD9081EVM — UCD9081EVM 评估模块
SLVC154 — UCD9080 EVM GUI-2.3
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (RHB) | 32 | Ultra Librarian |