UCD9081
- Single Supply Voltage: 3.3 V
- Low Power Consumption: 3-mA Nominal Supply Current
- Sequences and Monitors Eight Voltage Rails
- Rail Voltages Sampled With 3.2-mV Resolution
- Internal or External Voltage Reference
- Four Configurable Digital Outputs for Power-On-Reset and Other Functions
- Configurable Digital Output Polarity
- Flexible Rail Sequencing Based on Timeline (ms), Parent Rail Regulation Window, or Parent Rail Achieving Defined Threshold
- Independent Under- and Overvoltage Thresholds Per Rail
- Configurable Regulation Expiration Times Per Rail
- Flexible Alarm Processing: Ignore, Log Only, Retry n Times, Retry Continuously, Sequence, Parent Rail Can Shutdown Child Rails
- Alarm Conditions Logged With Timestamp: Under- and Overvoltage Glitch, Sustained Under- and Overvoltage, Rail Did Not Start
- On-Chip Flash for Storing User Data
- Error Logging to Flash for System Failure Analysis
- I2C™ Interface for Configuration and Monitoring
- Microsoft Windows™ GUI for Configuration and Monitoring
- APPLICATIONS
- Telecommunications Switches
- Servers
- Networking Equipment
- Test Equipment
- Industrial
- Any System Requiring Sequencing of Multiple Voltage Rails
All other trademarks are the property of their respective owners
The UCD9081 power-supply sequencer controls the enable sequence of up to eight independent voltage rails and provides four general-purpose digital outputs (GPO). 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 UCD9081 monitors the voltage rails independently and has a high degree of rail sequence and alarm response options. 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 UCD9081 monitors can be configured to shut down a user-defined set of other rails and GPOs, and alarm conditions are monitored on a per-rail basis.
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 | UCD9081 8-Channel Power Supply Sequencer and Monitor With Error Logging 数据表 (Rev. C) | PDF | HTML | 2016-11-30 | ||
| 应用手册 | UCD9081 编程指南 (Rev. C) | PDF | HTML | 英语版 (Rev.C) | PDF | HTML | 2023-5-18 | |
| 用户指南 | Advanced Sequencing and Monitoring Using the UCD9081 (Rev. A) | 2010-5-6 | ||||
| 应用手册 | Communicating With the UCD9081; Unpowered, in System | 2008-12-22 | ||||
| 应用手册 | 5 VIN solution using DCDC Controllers, a LDO, and a Digitally Prog. Sequencer | 2008-11-24 | ||||
| 应用手册 | Monitoring Fan Tachometers using the UCD908x Devices | 2008-10-17 | ||||
| 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
SLVC173 — UCD9081 EVM GUI exe file
SLVC490 — UCD9081 GUI Win 7
UCD9081-EVM-GUI — Graphical user interface (GUI) software used to configure and monitor TI UCD9081 sequencer EVM
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (RHB) | 32 | Ultra Librarian |