Overview
The UCD9081RHBRG4, produced by Texas Instruments, is a highly integrated power-supply sequencer and monitor designed to manage and sequence up to eight independent voltage rails. This component is housed in a 32-pin, quad-flatpack (VQFN) package and operates on a single supply voltage of 3.3 V. It is particularly useful in complex power management systems where precise sequencing and monitoring of multiple power supplies are crucial. The UCD9081RHBRG4 features a low power consumption of approximately 3 mA at 3.3 V, making it suitable for power-sensitive applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 32-VFQFN Exposed Pad |
| Pin Count | 32 |
| Operating Supply Voltage | 3.0 V to 3.6 V |
| Max Supply Current | 4 mA |
| Quiescent Current | 3 mA |
| Number of Channels | 8 |
| Operating Temperature Range | -40°C to 85°C |
| Reset Timeout | 2 μs Minimum |
| Dimensions | 5 mm x 5 mm x 0.9 mm |
| RoHS Status | RoHS3 Compliant, Lead Free |
Key Features
- Monitors and sequences up to eight independent power supplies via I2C bus.
- Each power supply enable (ENx) and general-purpose output (GPOx) can be configured for elapsed time, time delay after another supply reaches regulation, or specific voltage levels.
- Features a 10-bit analog-to-digital converter (ADC) for voltage monitoring with an internal 2.5-V reference or external reference tied to VCC.
- Supports adjustable overvoltage (OV) and undervoltage (UV) thresholds and maximum time for regulation (MTFR).
- Provides various alarm processing options including ignore, log only, retry, and sequence shutdown.
- Can be configured and monitored via a Windows-based GUI.
- Supports up to 16 I2C addresses for multiple device configurations.
Applications
The UCD9081RHBRG4 is suitable for a wide range of applications that require complex power management, including:
- Server and data center power systems.
- Telecommunication equipment.
- Industrial control systems.
- Medical devices requiring precise power sequencing.
- High-performance computing systems.
Q & A
- What is the primary function of the UCD9081RHBRG4?
The primary function is to monitor and sequence up to eight independent power supplies. - What is the operating supply voltage range of the UCD9081RHBRG4?
The operating supply voltage range is 3.0 V to 3.6 V. - How many power supply enables and general-purpose outputs does the UCD9081RHBRG4 support?
The UCD9081RHBRG4 supports eight power supply enables (ENx) and up to four general-purpose outputs (GPOx). - What is the resolution of the analog-to-digital converter (ADC) in the UCD9081RHBRG4?
The ADC has a 10-bit resolution. - Can the UCD9081RHBRG4 be configured via a graphical user interface (GUI)?
Yes, the UCD9081RHBRG4 can be configured and monitored via a Windows-based GUI. - How many I2C addresses does the UCD9081RHBRG4 support?
The UCD9081RHBRG4 supports up to 16 I2C addresses. - What are the alarm processing options available in the UCD9081RHBRG4?
The alarm processing options include ignore, log only, retry n times, and sequence shutdown. - What is the maximum operating temperature of the UCD9081RHBRG4?
The maximum operating temperature is 85°C. - Is the UCD9081RHBRG4 RoHS compliant and lead-free?
Yes, the UCD9081RHBRG4 is RoHS3 compliant and lead-free. - How can multiple UCD9081RHBRG4 devices be used in a system?
Multiple devices can be used independently but connected to a single I2C bus or by cascading devices.
