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UCC287502DBVR AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

UCC287502DBVR product

UCC287502DBVR

AC DC Converters

offline flybackcurrent modesecondary-side regulationopto-coupler feedback65 kHzSOT-23-6auto-restart

UCC287502DBVR is a 65 kHz offline flyback controller for optocoupler-based secondary-side regulation. Its OVP/NTC FLT-pin variant, CCM support, burst mode, and auto-restart protections fit isolated AC/DC supply designs.

Best for

  • Isolated offline flyback AC/DC supplies
  • Optocoupler-regulated designs requiring CCM capability
  • Low standby-power adapters and chargers

Avoid if

  • A brownout-detection FLT-pin variant is required
  • A controller without optocoupler secondary-side feedback is required
  • The required switching frequency is not compatible with 65 kHz operation

Check before use

  • Confirm the UCC287502 FLT-pin OVP and external NTC configuration
  • Keep FLT-pin input current at or below 5 mA
  • Use slope compensation when duty cycle exceeds 50 %
  • Confirm VDD remains below the 28 V typical OVLO threshold

Key specifications

Switching frequency
65 kHz nominal
Regulation
Secondary-side regulation via optocoupler
Fault response
Auto-restart
FLT-pin function
OVP and external NTC thermal protection
Package
SOT-23-6 (DBV)

Compliance & Environment

RoHS
Yes
REACH
-
MSL
Level 2, 260 °C, 1 year
ECCN
-
HTSUS
-

Application

Offline AC/DC flyback power suppliesBattery chargers and appliance suppliesIndustrial and server auxiliary supplies

Datasheet

ssztd17

800 KB

Datasheet AI

CAD Models

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Alternative components

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Design and risk insights

Questions & answers

UCC287502DBVR is a Texas Instruments current-mode PWM controller for isolated offline flyback converters. It operates at 65 kHz in its normal fixed-frequency region and uses an optocoupler for secondary-side output-voltage regulation.