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.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | 8-Channel Power Supply Sequencer and Monitor datasheet (Rev. E) | 2008. 5. 6 | ||
| 애플리케이션 노트 | Communicating With the UCD9081; Unpowered, in System | 2008. 12. 22 | |||
| 애플리케이션 노트 | Monitoring Fan Tachometers using the UCD908x Devices | 2008. 10. 17 | |||
| 사용 설명서 | UCD9080 Power Supply Sequencer and Monitor EVM (Rev. A) | 2008. 2. 7 | |||
| 애플리케이션 노트 | Programming the UCD9080 | 2007. 12. 10 | |||
| 애플리케이션 노트 | Expanded System Monitoring Functions with UCD9080 (Rev. A) | 2007. 11. 5 |
설계 및 개발
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UCD9081EVM — UCD9081EVM 평가 모듈
SLVC154 — UCD9080 EVM GUI-2.3
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RHB) | 32 | Ultra Librarian |