UCC28C41QDRQ1
The UCC28C41 is a BiCMOS current-mode PWM controller, pin-compatible with the UC284x family, featuring 7-V startup, 50-uA start-up current and up to 1-MHz operation with a ±1% reference. The -Q1 automotive grade operates from -40°C to +125°C and is housed in an 8-pin SOIC, used for isolated and single-ended DC-DC converters in automotive and industrial power supplies.
- Package
- SOIC-8
Product overview
The UCC28C41 is a BiCMOS current-mode PWM controller, pin-compatible with the UC284x family, featuring 7-V startup, 50-uA start-up current and up to 1-MHz operation with a ±1% reference. The -Q1 automotive grade operates from -40°C to +125°C and is housed in an 8-pin SOIC, used for isolated and single-ended DC-DC converters in automotive and industrial power supplies.
- Manufacturer
- TI
- Part number
- UCC28C41QDRQ1
- Category
- Power Management
- Package
- SOIC-8
- Packaging
- Tape & Reel
- Condition
- New & Original
- Compliance
- RoHS Compliant
- Lifecycle
- Confirm with manufacturer
- Lead time / MOQ
- Confirm with quotation
Technical parameters
43 parametersConstruction
- Output energy (capacitive load)
- 5 µJ
- D package
- 72.3
- DGK package
- 98.1
- Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001
- ±2500
- UCC28C4x
- 125
- UCC38C4x
- 85
- Line regulation VVDD = 12V to 18V
- 0.2 mV
- Load regulation 1mA to 20mA
- 3 mV
- Total output variation See
- 5.18 V
- Long term stability 1000 hours, TJ = 125°C, see
- 5 mV
- fOSC Initial accuracy TJ = 25°C, see
- 53 kHz
- ACS Gain See (5)
- 3 V/V
- VCS Maximum input signal VFB < 2.4V
- 1 V
- PSRR Power supply rejection ratio VVDD = 12V to 18V(2)
- 70 dB
- tD CS to output delay
- 35 ns
- COMP to CS offset VCS = 0V
- 1.15 V
- VOUT(low) RDS(on) pulldown ISINK = 200mA
- 5.5 Ω
- VOUT(high) RDS(on) pullup ISOURCE = 200mA
- 10 Ω
- tRISE Rise tIme TJ = 25°C, COUT = 1nF
- 25 ns
- tFALL Fall tIme TJ = 25°C, COUT = 1nF
- 20 ns
- UCCx8C42, UCCx8C44
- 14.5
- VDDON Start threshold UCCx8C43, UCCx8C45
- 8.4 V
Performance
- Input voltage
- 20 V
- Input current
- 30 mA
- Output drive current (peak)
- ±1 A
- Analog input voltage COMP, CS, FB
- 6.3
- Output driver voltage
- 20 V
- Reference voltage
- 7
- Error amplifier output sink current
- 10 mA
- Lead temperature (soldering, 10 s)
- 300 °C
- Operating junction temperature
- 150 °C
- Storage temperature, Tstg
- 150 °C
- VVDD Input voltage
- 18 V
- VOUT Output driver voltage
- 18 V
- VREF Maximum continuous voltage from external circuitry
- 5.5 V
- IOUT Average output driver current (source and sink)
- 200 mA
- IOUT(VREF) Reference output current (source)
- 20 mA
- VVREF VREF voltage, initial accuracy TJ = 25°C, IOUT = 1mA
- 5 V
- Temperature stability See
- 0.2 °C
- VREF noise voltage 10Hz to 10kHz, TJ = 25°C, see
- 50 µV
- IVREF Output short circuit (source current)
- 45 mA
- Voltage stability 12V ≤ VVDD ≤18V
- 1%
- ICS Input bias current (source current)
- 0.1 µA
Specifications & documentation
Use the official manufacturer documentation to verify electrical characteristics, package dimensions and operating limits before design approval.
Frequently asked questions
Common pre-quotation questions and selection notes to help you verify key parameters and sourcing before requesting a quote.
How do I verify the part is genuine / avoid counterfeit?
Buy only from authorized or franchised channels. On receipt, check: (1) laser-etched markings that solvent will not remove; (2) batch / lot code consistent between label and device; (3) original reel or tube packaging; (4) request traceability documents (CoC, date code). For critical parts, third-party X-ray / decapsulation testing is recommended.
How do I read the markings / date code on a chip?
Most active ICs use a 4-digit date code YYWW (year + week, e.g. 2345 = 2023 week 45). The top mark is manufacturer logo + base part number + lot code. For SMD code lookup, search by "marking code + package" on AllDataSheet / Octopart / LCSC.
What does the package code mean (TO-220, SOT-23, QFP…)?
Package codes describe the physical form factor and pin layout — critical when sourcing, because electrically equivalent parts in different packages will not fit the PCB. Common: TO-220 (3-terminal power), SOT-23 (3-pin small signal), DIP / SOIC (through-hole / SMD ICs), QFP / QFN (MCUs, processors).
What if my original model is discontinued (EOL / NRND)?
Three options: (1) the manufacturer’s recommended replacement; (2) franchised distributor legacy stock; (3) a functionally compatible cross-brand part — provided pinout and key parameters match. Always evaluate on a real board before mass swap.
What is the minimum order quantity (MOQ) and lead time?
We support both sample and volume orders. Minimum order quantity, stock availability and lead time are confirmed per inquiry — tell us your model and quantity and we will quote. Sample quantities for design validation are supported.
Can I get the datasheet and samples?
The full datasheet is linked on this page. For parts without a direct datasheet, we can locate the manufacturer document on request. Sample requests are supported — contact us with your model and quantity.
Request confirmation of current stock, date code, packaging, price and delivery terms. Product information does not constitute a binding offer; final specifications are confirmed with your quotation.