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UCC3809D-1 The Texas Instruments UCC3809D-1 is an economy primary side controller for offline and isolated DC-to-DC power supplies. It operates with an input voltage range of 8V to 19V and a maximum duty cycle of 70%.
Mfr Part #:

UCC3809D-1

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UCC3809D-1 is an economy primary side controller for offline and isolated DC-to-DC power supplies. It operates with an input voltage range of 8V to 19V and a maximum duty cycle of 70%.
✓ Total Stock: 37,048 pcs
$ Price Range: $1.53

UCC3809D-1 Available from 2 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
36,160 pcs
On Request
36160 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
888 pcs
On Request
888 pcs On Request 1 On Request On Request 10+ 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.

UCC3809D-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 Spacing
Lead Style
Mounting Type
Operating Temperature
Output Isolation
Supplier Device Package
Supplier Package
Topology
Voltage
Voltage Reference
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UCC3809D-1 Description

Short technical summary and product information.

The UCC3809D-1 from Texas Instruments is an integrated circuit designed for economy low-power offline and isolated DC-to-DC switching power supplies. It contains essential control and drive circuitry, minimizing the need for external components. This device features undervoltage lockout with low startup current, a user-accessible 5V reference, and a PWM comparator with a totem pole output stage capable of sinking or sourcing peak current.

 

Key electrical specifications include an operating voltage range of 8V to 19V, a maximum duty cycle of 70%, and an operating frequency up to 1MHz. It supports multiple topologies such as Boost, Buck, Flyback, and Forward configurations. The controller also offers user-programmable soft start and frequency control features.

 

Packaged in an 8-pin SOIC package, the UCC3809D-1 is suitable for applications where board space is a consideration. Its surface mount type facilitates integration into various electronic designs. The operating temperature range is -55°C to 150°C (TJ).

UCC3809D-1 Quick Information

Product Type: AC/DC Controller
Canonical Name: UCC3809D-1 Economy Primary Side Controller
Subcategory: Offline Switch

UCC3809D-1 Compliance

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

UCC3809D-1 Estimated Pricing

Qty Low High
1+ $1.53 $1.53

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

UCC3809D-1 Features

  • Economy primary side controller for power supplies.
  • Supports multiple topologies: Boost, Buck, Flyback, Forward.
  • Operates from 8V to 19V with 70% duty cycle.
  • Features soft start and frequency control up to 1MHz.
  • Packaged in an 8-pin SOIC for surface mounting.

UCC3809D-1 Applications

  • Ideal for offline power supplies.
  • Suitable for isolated DC-to-DC converters.
  • Used in low-power switching applications.
  • Enables minimal external component count designs.

UCC3809D-1 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UCC3809D-1?

The operating voltage range is 8V to 19V.

What is the package type?

The UCC3809D-1 is available in an 8-SOIC surface-mount package.

What is the operating temperature range?

The junction operating temperature range is -55°C to 150°C.

What topologies does the UCC3809D-1 support?

It supports boost, buck, flyback, and forward topologies.

What is the switching frequency?

The switching frequency is 1MHz.

What is the maximum duty cycle?

The maximum duty cycle is 70%.

What is the startup current?

The startup current is 100µA typical.

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