GreenChipTMII SMPS control IC Integrated Circuit Chip Universal mains supply operation TEA1533AT

TEA1533T; TEA1533AT

GreenChipTMII SMPS control IC

FEATURES

Distinctive features

• Universal mains supply operation (70 to 276 V AC)

• High level of integration, giving a very low external component count.

Green features

• Valley or zero voltage switching for minimum switching losses

• Efficient quasi-resonant operation at high power levels

• Frequency reduction at low power standby for improved system efficiency (<3 W)

• Cycle skipping mode at very low loads; Pi <300 mW at no-load operation for a typical adapter application

• On-chip start-up current source.

Protection features

• Safe restart mode for system fault conditions

• Continuous mode protection by means of demagnetization detection (zero switch-on current)

• Accurate and adjustable overvoltage protection (latched in TEA1533T, safe restart in TEA1533AT)

• Short winding protection

• Undervoltage protection (foldback during overload)

• Overtemperature protection (latched in TEA1533T, safe restart in TEA1533AT)

• Low and adjustable overcurrent protection trip level

• Soft (re)start

• Mains voltage-dependent operation enabling level.