Mfr Part #:

UCC3921DTR

The Texas Instruments UCC3921DTR is a hot swap controller designed for general-purpose applications. It operates at -48V and features an 8-SOIC package.

✓ Total Stock: 14,202 pcs

$ Price Range: $1.31

UCC3921DTR Available from 2 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Smaxon Electronics ✓ Non-Authorised Inventory information	10,000 pcs On Request	10000 pcs	On Request	1	On Request	On Request	12+13+	On Request	On Request
Optech Co.,Limited ✓ Non-Authorised Inventory information	4,202 pcs On Request	4202 pcs	On Request	1	On Request	On Request	13+	On Request	On Request

UCC3921DTR Description

Short technical summary and product information.

The UCC3921DTR from Texas Instruments is a hot swap power manager IC designed for robust power management and fault handling. This device operates with a voltage rating of -48V and is suitable for general-purpose applications. It features an operating temperature range of 0°C to 70°C, making it reliable for various environmental conditions.

The controller is housed in an 8-SOIC package, designed for surface mount installation. Key programmable features include auto-retry, current limiting, fault timeout, and latched fault protection. It also incorporates Undervoltage Lockout (UVLO) for system protection. The UCC3921DTR provides a single channel for power management.

This IC is referenced to the negative input voltage and powered through an external resistor to ground. It includes an onboard 10V shunt regulator for overvoltage protection and serves as a reference for programming maximum output sourcing current during faults. All control and housekeeping functions are integrated and externally programmable, offering flexibility in system design.

UCC3921DTR Quick Information

Product Type: Hot Swap Controller

Canonical Name: UCC3921DTR Hot Swap Controller

Subcategory: Power Protection Switches & Controllers

UCC3921DTR Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

UCC3921DTR Estimated Pricing

Qty	Low	High
1+	$1.31	$1.31

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

UCC3921DTR Features

Negative floating hot swap controller.
Operates at -48V input voltage.
Programmable fault protection features.
Surface mount 8-SOIC package.
0°C to 70°C operating temperature.

UCC3921DTR Applications

Provides robust power management.
Handles hot swap power events.
Offers fault indication signal.
Supports automatic retry mode.
Suitable for general purpose use.

UCC3921DTR FAQs

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

What is the operating temperature range of the UCC3921DTR?

The UCC3921DTR operates within a temperature range of 0°C to 70°C.

What is the typical regulator voltage at 2mA source current?

The typical regulator voltage is 9.5V when the source current is 2mA.

What is the typical UVLO Off Voltage?

The typical UVLO Off Voltage is 8V.

What is the typical overcurrent threshold?

The typical overcurrent threshold is 50mV.

What programmable features does the UCC3921DTR offer?

The UCC3921DTR offers programmable features including Auto Retry, Current Limit, Fault Timeout, and Latched Fault.

What type of package does the UCC3921DTR come in?

The UCC3921DTR comes in an 8-SOIC package.

What is the mounting type for this component?

The mounting type for this component is Surface Mount.