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UCD9081

The Texas Instruments UCD9081 is an 8-channel power supply sequencer and monitor operating at 3.3V. It offers 3.2mV resolution for rail voltage sampling and features an I2C interface for configuration.

✓ Total Stock: 8,417 pcs

$ Price Range: $0.75

UCD9081 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	8,417 pcs On Request	8417 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

UCD9081 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments
Interface	I2C
Operating Temperature Range	-40 to 85 °C
Resolution	3.2 mV
SVHC Present	Not Present
Supply Current	3 mA
Supply Voltage	3.3 V

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UCD9081 Description

Short technical summary and product information.

The Texas Instruments UCD9081 is an 8-channel power supply sequencer and monitor designed for systems requiring precise control over multiple voltage rails. Operating from a single 3.3V supply, this IC offers a nominal supply current of 3mA and samples rail voltages with a resolution of 3.2mV.

Key features include the ability to sequence and monitor up to eight independent voltage rails. The sequencing logic is flexible, supporting timeline-based events, parent rail regulation windows, or threshold achievement. Each rail can be independently monitored for under- and overvoltage conditions with configurable thresholds and expiration times. Alarm processing options include logging, retries, or cascading shutdown.

The UCD9081 includes four configurable digital outputs for functions like power-on reset and an on-chip flash memory for storing user data and error logs. Communication and configuration are managed via an I2C interface, with support for a Microsoft Windows GUI. This makes it suitable for applications in telecommunications switches, servers, networking equipment, test equipment, and industrial systems.

The device is available in a VQFN (RHB) package measuring 5mm x 5mm, with an operating temperature range of -40°C to 85°C.

UCD9081 Quick Information

Product Type: Power Supply Sequencer and Monitor

Canonical Name: UCD9081 8-Channel Power Supply Sequencer and Monitor

Subcategory: Power Management ICs

UCD9081 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

UCD9081 Estimated Pricing

Qty	Low	High
1+	$0.75	$0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

UCD9081 Features

Sequences and monitors eight voltage rails.
Samples rail voltages with 3.2-mV resolution.
Features flexible rail sequencing options.
Includes four configurable digital outputs.
I2C interface for configuration and monitoring.

UCD9081 Applications

Ideal for telecommunications switches.
Suitable for server power management.
Used in networking equipment.
Applicable for test equipment.
Designed for industrial systems.

UCD9081 FAQs

6 frequently asked questions generated from this part’s specifications.

What is the supply voltage for the UCD9081?

The UCD9081 operates with a single supply voltage of 3.3 V.

How many voltage rails can the UCD9081 sequence and monitor?

The UCD9081 can sequence and monitor up to eight independent voltage rails.

What is the voltage resolution of the UCD9081?

The UCD9081 samples rail voltages with a resolution of 3.2 mV.

What interface does the UCD9081 use for configuration?

The UCD9081 uses an I2C interface for configuration and monitoring.

What is the operating temperature range of the UCD9081?

The UCD9081 has an operating temperature range of -40°C to 85°C.

What type of package is the UCD9081 supplied in?

The UCD9081 is supplied in a VQFN (RHB) package.