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.
UCC38C is a Texas Instruments order-code family — not a single orderable MPN. This page lists 13 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.
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 Other listed variants describe: 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; 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.
Across listed variants, watch these parameters: packages: 8-TSSOP, 8-MSOP (0.118, 3.00mm Width), 8-SOIC (0.154, 3.90mm Width).
Suffix examples in this family: 40DGK, 40DR, 42DGK, 43DGKRG4, 43P, 44D, 44DGK, 44DGKR. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.
Columns that actually vary on this page: Package Type. If two rows match on MPN prefix but differ there, they are not interchangeable for production.
Example MPNs: UCC38C40DGK, UCC38C40DR, UCC38C42DGK, UCC38C43DGKRG4, UCC38C43P, UCC38C44D.
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.
UCC38C uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.
Suffixes seen here: 40DGK, 40DR, 42DGK, 43DGKRG4, 43P, 44D, 44DGK, 44DGKR, 45DGK, 45DGKR (+3 more).
What changes between rows: Package Type. Sort the table by these columns when narrowing from base number to a single MPN.
Full MPN examples: UCC38C40DGK, UCC38C40DR, UCC38C42DGK, UCC38C43DGKRG4, UCC38C43P.
Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.
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
Variant Parameters
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.