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UCC33421-Q1

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Automotive, 5V/5V, 1.5W regulated 5kVRMS isolated DC/DC power module with integrated transformer

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Data sheet

UCC33421-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 5.5 Vin (min) (V) 4.5 Vout (max) (V) 5.7 Vout (min) (V) 4.85 Features 1.5W, Regulated, Reinforced isolation, Single output Device type Isolated modules Regulated outputs (#) 1 TI functional safety category Functional Safety-Capable Isolation rating Reinforced Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 5.5 Vin (min) (V) 4.5 Vout (max) (V) 5.7 Vout (min) (V) 4.85 Features 1.5W, Regulated, Reinforced isolation, Single output Device type Isolated modules Regulated outputs (#) 1 TI functional safety category Functional Safety-Capable Isolation rating Reinforced Operating temperature range (°C) -40 to 125
SO-MOD (DHA) 16 60.255 mm² 5.85 x 10.3 UNKNOWN (DHA) 16 See data sheet
  • 1.5W maximum output power
  • 4.5V to 5.5V input voltage operation range
  • 5.0V, 5.5V regulated selectable output voltage
    • 5.0V: 300mA available load current
  • 0.5% typical load regulation
  • 4mV/V typical line regulation
  • Robust isolation barrier:
    • Isolation rating: 5kVRMS
    • Surge capability: 10.4kVPK
    • Working voltage: 1700VPK
    • ± 8KV IEC 61000-4-2 contact discharge protection across isolation barrier
    • 250V/ns common mode transient immunity
  • Power dense isolated DC/DC module with integrated transformer technology
  • Adaptive spread spectrum modulation (SSM)
  • Meets CISPR-25 Class 5 emission
  • Strong magnetic fields immunity
  • Overload and short circuit protection
  • Thermal shutdown
  • Low inrush current soft-start
  • Enable pin with fault reporting mechanism
  • AEC-Q100 qualified with the following results:
    • Device temperature Grade 1: –40°C to 125°C ambient operating temperature
  • Functional Safety-Capable
  • SSOP-16 (5.85mm × 7.50mm) package
  • >8.2mm clearance and creepage
  • 1.5W maximum output power
  • 4.5V to 5.5V input voltage operation range
  • 5.0V, 5.5V regulated selectable output voltage
    • 5.0V: 300mA available load current
  • 0.5% typical load regulation
  • 4mV/V typical line regulation
  • Robust isolation barrier:
    • Isolation rating: 5kVRMS
    • Surge capability: 10.4kVPK
    • Working voltage: 1700VPK
    • ± 8KV IEC 61000-4-2 contact discharge protection across isolation barrier
    • 250V/ns common mode transient immunity
  • Power dense isolated DC/DC module with integrated transformer technology
  • Adaptive spread spectrum modulation (SSM)
  • Meets CISPR-25 Class 5 emission
  • Strong magnetic fields immunity
  • Overload and short circuit protection
  • Thermal shutdown
  • Low inrush current soft-start
  • Enable pin with fault reporting mechanism
  • AEC-Q100 qualified with the following results:
    • Device temperature Grade 1: –40°C to 125°C ambient operating temperature
  • Functional Safety-Capable
  • SSOP-16 (5.85mm × 7.50mm) package
  • >8.2mm clearance and creepage

The UCC33421-Q1 is an automotive qualified DC/DC power module with integrated transformer technology designed to provide 1.5W of isolated output power. It can support an input voltage operation range of 4.5V to 5.5V and regulate 5.0V output voltage with a selectable headroom of 5.5V.

The UCC33421-Q1 features a proprietary transformer architecture that achieves a 5kVRMS isolation rating, while simultaneously supporting low EMI and excellent load regulation.

The UCC33421-Q1 integrates protection features for increased system robustness such as enable pin with fault reporting mechanism, short circuit protection and thermal shutdown.

The UCC33421-Q1 comes in a miniaturized, low-profile SSOP (5.85mm × 7.50mm) package with 2.65mm height and > 8.2mm clearance and creepage.

The UCC33421-Q1 is an automotive qualified DC/DC power module with integrated transformer technology designed to provide 1.5W of isolated output power. It can support an input voltage operation range of 4.5V to 5.5V and regulate 5.0V output voltage with a selectable headroom of 5.5V.

The UCC33421-Q1 features a proprietary transformer architecture that achieves a 5kVRMS isolation rating, while simultaneously supporting low EMI and excellent load regulation.

The UCC33421-Q1 integrates protection features for increased system robustness such as enable pin with fault reporting mechanism, short circuit protection and thermal shutdown.

The UCC33421-Q1 comes in a miniaturized, low-profile SSOP (5.85mm × 7.50mm) package with 2.65mm height and > 8.2mm clearance and creepage.
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Technical documentation

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Type Title Date
* Data sheet UCC33421-Q1 Ultra-Small, 1.5W , 5.0V , 5kVRMS Isolation, Automotive DC/DC Module datasheet (Rev. A) PDF | HTML 12 Sep 2025
Application note How to Pass CISPR32 Class B for UCC33420-Q1 PDF | HTML 29 Oct 2025
Certificate UCC33421-Q1 Certificate of Compliance CISPR25 Class 5 28 Oct 2025
Functional safety information UCC33011(Q1), UCC33021(Q1) UCC33411(Q1), and UCC33421(Q1) Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 16 Sep 2025
Certificate UCC33421 Certificate of Compliance CISPR32 Class B 20 Aug 2025
Application brief High Voltage Measurement in HEV/EV Application PDF | HTML 16 Jun 2025

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