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UCC2809DTR-1 The Texas Instruments UCC2809DTR-1 is an economy primary side controller designed for offline and isolated DC-to-DC power supplies. It operates at frequencies up to 1MHz.
Mfr Part #:

UCC2809DTR-1

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UCC2809DTR-1 is an economy primary side controller designed for offline and isolated DC-to-DC power supplies. It operates at frequencies up to 1MHz.
✓ Total Stock: 45,604 pcs
$ Price Range: $1.64

UCC2809DTR-1 Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
45,200 pcs
On Request
45200 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
403 pcs
On Request
403 pcs On Request 1 On Request On Request 09+ On Request On Request
Hybrid Electronics ✓
Non-Authorised Inventory information
1 pcs
On Request
1 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

UCC2809DTR-1 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Duty Cycle
Frequency
Internal Switch(s)
Lead Style
Mounting Type
Operating Temperature
Output Isolation
Supplier Device Package
Supplier Package
Topology
Voltage
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UCC2809DTR-1 Description

Short technical summary and product information.

The UCC2809DTR-1 from Texas Instruments is an economy primary side controller IC. It integrates essential control and drive circuitry for offline and isolated DC-to-DC fixed frequency current mode switching power supplies, minimizing external component requirements.

 

Key features include user-programmable soft start and maximum duty cycle, an accessible 5V reference, and undervoltage lockout. The device operates at frequencies up to 1MHz and includes a 0.4A source/0.8A sink FET driver. It is designed for efficiency, with a low startup current of 100µA.

 

This controller is suitable for applications requiring minimal external parts count. It is available in an 8-SOIC package, making it ideal for space-constrained designs. The operating voltage range is from 8V to 19V, with a maximum duty cycle of 70%.

 

The UCC2809 family offers flexibility with user-programmable oscillator frequency and maximum duty cycle via external resistors and a capacitor. It also features full cycle soft start and undervoltage lockout with hysteresis tailored for off-line and DC-to-DC systems.

UCC2809DTR-1 Quick Information

Product Type: AC/DC Switching Regulator
Series: UCC2809-1
Canonical Name: UCC2809-1 Economy Primary Side Controller
Subcategory: Offline Switching Regulators

UCC2809DTR-1 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

UCC2809DTR-1 Estimated Pricing

Qty Low High
1+ $1.64 $1.64

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

UCC2809DTR-1 Features

  • Economy primary side controller IC.
  • Operates up to 1MHz frequency.
  • User-programmable soft start and duty cycle.
  • Low 100µA startup current.
  • 8-SOIC surface mount package.

UCC2809DTR-1 Applications

  • Ideal for offline power supplies.
  • Suitable for isolated DC-to-DC converters.
  • Minimizes external component count.
  • Designed for space-constrained applications.

UCC2809DTR-1 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the UCC2809DTR-1?

The operating voltage range is 8V to 19V.

What is the operating frequency of the UCC2809DTR-1?

The device operates at a frequency of 1MHz.

What is the maximum duty cycle for this controller?

The maximum duty cycle is 70%.

What package type is the UCC2809DTR-1 available in?

It is available in an 8-SOIC package.

What are the undervoltage lockout thresholds for the UCC2809-1 variant?

The UVLO start threshold is typically 10.4V and the turn-off threshold is typically 8V.

What is the startup current for the UCC2809DTR-1?

The startup current is low, typically 100µA.

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