Overview
The UCD9080RHBR, produced by Texas Instruments, is an 8-channel power-supply sequencer and monitor. This device is designed to control the enable sequence of up to eight independent voltage rails and provides four general-purpose digital outputs. It operates from a single 3.3-V supply and does not require external memory or a clock. The UCD9080RHBR monitors voltage rails independently at a rate exceeding 20 kHz, offering high configurability in rail sequence and error response. It is particularly useful in systems that require the sequencing of multiple voltage rails, such as telecommunications switches, servers, networking equipment, and test equipment.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 32-pin VQFN (RHB) |
| Operating Temperature Range | -40°C to 85°C |
| Supply Voltage | 3.3 V |
| Voltage Rail Resolution | 3.2 mV |
| Voltage Rail Sampling Rate | Every 50 µs |
| Number of Voltage Rails | Up to 8 |
| General-Purpose Digital Outputs | 4 |
| Communication Interface | I2C |
| Package Quantity | 3000 (Carrier) |
Key Features
- Sequences and monitors up to eight independent voltage rails.
- Low power consumption.
- 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 based on timeline, parent rail regulation window, and 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.
Q & A
- What is the primary function of the UCD9080RHBR?
The UCD9080RHBR is an 8-channel power-supply sequencer and monitor that controls the enable sequence of up to eight independent voltage rails and provides four general-purpose digital outputs.
- What is the operating supply voltage of the UCD9080RHBR?
The device operates from a single 3.3-V supply.
- How often are the voltage rails sampled by the UCD9080RHBR?
The voltage rails are sampled every 50 µs with a resolution of 3.2 mV.
- What communication interface does the UCD9080RHBR use?
The device uses an I2C interface for configuration and monitoring.
- Can the UCD9080RHBR be configured to shut down specific rails in case of an error?
Yes, each rail can be configured to shut down a user-defined set of other rails in case of an error.
- What kind of alarm conditions are monitored by the UCD9080RHBR?
The device monitors per-rail alarm conditions including under- and overvoltage glitches, sustained under- and/or overvoltage, and rail did not start, all with timestamps.
- Is there a GUI available for configuring and monitoring the UCD9080RHBR?
Yes, a Microsoft Windows GUI is available for configuration and monitoring.
- What is the package type and pin count of the UCD9080RHBR?
The device is available in a 32-pin VQFN (RHB) package.
- What is the operating temperature range of the UCD9080RHBR?
The operating temperature range is -40°C to 85°C.
- Can the UCD9080RHBR be used in automotive applications?
No, the UCD9080RHBR is not qualified for automotive use.
- Is the UCD9080RHBR compliant with RoHS regulations?
Yes, the UCD9080RHBR is compliant with RoHS regulations (2011/65/EU, 2015/863).
