Texas Instruments UCC38C
UCC38C variants from Texas Instruments
UCC38C Overview
What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.
Key Features
- Footprint / package: 8-TSSOP, 8-MSOP (0.118, 3.00mm Width), 8-SOIC (0.154, 3.90mm Width)Land pattern and thermal pad differ between these packages — run a quick footprint check before you swap variants.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 13 distinct suffix patternsExamples: 40DGK, 40DR, 42DGK, 43DGKRG4, 43P (+8 more). Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Microcontrollers — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 13 UCC38C part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| UCC38C40DGK | 20V, 1-A, Low current 1MHz current mode PWM controller with 7V/6.6V UVLO 100% duty cycle, 0C to 70C 8-VSSOP 0 to 70 | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C40DR | 20V, 1-A, Low current 1MHz current mode PWM controller with 7V/6.6V UVLO 100% duty cycle, 0C to 70C 8-SOIC 0 to 70 | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C42DGK | 20V, 1-A, Low current 1MHz current mode PWM controller with 14.5V/9V UVLO 100% duty cycle, 0C to 70C 8-VSSOP 0 to 70 | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C43DGKRG4 | 20V, 1-A, Low current 1MHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 0C to 70C 8-VSSOP 0 to 70 | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C43P | 20V, 1-A, Low current 1MHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 0C to 70C 8-PDIP 0 to 70 | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C44D | 20V, 1-A, Low current 1MHz current mode PWM controller with 14.5V/9V UVLO 50% duty cycle, 0C to 70C 8-SOIC 0 to 70 | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C44DGK | 20V, 1-A, Low current 1MHz current mode PWM controller with 14.5V/9V UVLO 50% duty cycle, 0C to 70C 8-VSSOP 0 to 70 | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C44DGKR | 20V, 1-A, Low current 1MHz current mode PWM controller with 14.5V/9V UVLO 50% duty cycle, 0C to 70C 8-VSSOP 0 to 70 | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C45DGK | 1MHz PWM Controller, 18V, 200mA, 50% Duty Cycle, VSSOP | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C45DGKR | 20V, 1-A, Low current 1MHz current mode PWM controller with 8.4V/7.6V UVLO 50% duty cycle, 0C to 70C 8-VSSOP 0 to 70 | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C45DR | 20V, 1-A, Low current 1MHz current mode PWM controller with 8.4V/7.6V UVLO 50% duty cycle, 0C to 70C 8-SOIC 0 to 70 | - | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C41DGK | Package: 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) | Operating Temperature: 0°C ~ 70°C (TJ) | Functions: Step-Up, Step-Up/Step-Down | Topology: Boost, Flyback, Forward Converter | Output Type: Transistor Driver | Voltage Supply Vcc Vdd: 6.6V ~ 18V | 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) | Texas Instruments | Active | Compliant | In Stock | |
| UCC38C41DRG4 | Package: 8-SOIC (0.154, 3.90mm Width) | Operating Temperature: 0°C ~ 70°C (TJ) | Functions: Step-Up, Step-Up/Step-Down | Topology: Boost, Flyback, Forward Converter | Output Type: Transistor Driver | Voltage Supply Vcc Vdd: 6.6V ~ 18V | 8-SOIC (0.154, 3.90mm Width) | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on UCC38C map to package, grade, and reel options.
How to Choose the Right UCC38C Microcontrollers
Match the footprint first
Packages here: 8-TSSOP, 8-MSOP (0.118, 3.00mm Width), 8-SOIC (0.154, 3.90mm Width). Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For UCC38C, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "UCC38C" — include the full suffix (e.g. 40DGK, 40DR, 42DGK). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for UCC38C product family
Identity
Base Model
UCC38C
Manufacturer
Texas Instruments
Listed Variants
13
Variant Parameters
Package Type
8-TSSOP, 8-MSOP (0.118, 3.00mm Width), 8-SOIC (0.154, 3.90mm Width)
Lifecycle Status
Active
RoHS Status
Compliant
Source UCC38C with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 13 ordering variants from Texas Instruments. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the UCC38C product family.
UCC38C is a base / family code from Texas Instruments. You order a full MPN such as UCC38C40DGK, UCC38C40DR, UCC38C42DGK. The variant table lists 13 orderable lines with different suffixes.
Listed suffix fragments include: 40DGK, 40DR, 42DGK, 43DGKRG4, 43P, 44D. Typically they encode package (8-TSSOP, 8-MSOP (0.118, 3.00mm Width), 8-SOIC (0.154, 3.90mm Width)), temperature grade, and tape/reel option. Always decode on the Texas Instruments datasheet ordering guide — do not guess from pattern alone.
On this page the varying fields are: Package Type. Filter the table by the parameter you care about before picking an MPN.
Only after footprint and thermal review. Packages listed here (8-TSSOP, 8-MSOP (0.118, 3.00mm Width), 8-SOIC (0.154, 3.90mm Width)) use different land patterns and often different thermal resistance. Layout swaps need a new paste stencil at minimum, not just a BOM edit.
Lifecycle values in our listing: Active. Status is per MPN suffix — one variant can be Active while another is NRND. Check PCN for your exact suffix before multi-year commitments.
Full manufacturer MPN (not just UCC38C), quantity, needed date code, reel vs tube, and any compliance docs (CoC, RoHS, conflict minerals). If you only know the base prefix, include a photo of the existing label or reel.
Use the datasheet link in the page header. Cross-check electrical curves (SOA, saturation voltage, etc.) against your operating point — the table summarizes order codes, not every graph in the PDF.