UCD9081 电源序列发生器和监控器

UCD9081 描述

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.

	UCD9081	UCD9081
No. of Supervisors		8
# of supplies monitored	8	8
IDD(Typ)(uA)		3000
Pin/Package	32QFN	32QFN
Rating	Catalog	Catalog

UCD9081 特性

• Single Supply Voltage: 3.3V
• Low Power Consumption: 3mA 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
• MicrosoftWindows GUI for Configuration and Monitoring
• APPLICATIONS
  • Telecommunications Switches
  • Servers
  • Networking Equipment

UCD9081 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
UCD9081RHBR	ACTIVE	-40 to 85	3.20 | 1ku	QFN (RHB) | 32	3000 | LARGE T&R	UCD 9081
UCD9081RHBRG4	ACTIVE	-40 to 85	3.20 | 1ku	QFN (RHB) | 32	3000 | LARGE T&R	UCD 9081
UCD9081RHBT	ACTIVE	-40 to 85	3.40 | 1ku	QFN (RHB) | 32	250 | SMALL T&R	UCD 9081
UCD9081RHBTG4	ACTIVE	-40 to 85	3.40 | 1ku	QFN (RHB) | 32	250 | SMALL T&R	UCD 9081

UCD9081 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
UCD9081RHBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	UCD9081RHBR	UCD9081RHBR
UCD9081RHBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	UCD9081RHBRG4	UCD9081RHBRG4
UCD9081RHBT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	UCD9081RHBT	UCD9081RHBT
UCD9081RHBTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	UCD9081RHBTG4	UCD9081RHBTG4

UCD9081 应用技术支持与电子电路设计开发资源下载

1. UCD9081 数据资料 dataSheet 下载.PDF
2. TI 德州仪器监控电路（电压监控器）产品选型与价格 . xls

UCD9081 相关工具

名称	型号	公司	工具/软件类型
UCD9081 评估模块	UCD9081EVM	Texas Instruments	开发电路板/EVM