TEA1552T

TEA1552 TEA1552T  --  GreenChipII 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

• Standby indication pin to indicate low output power consumption.

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)

• Short winding protection

• Undervoltage protection (foldback during overload)

• Overtemperature protection (latched)

• Low and adjustable overcurrent protection trip level

• Soft (re)start

• Mains voltage-dependent operation-enabling level

• General purpose input for lock protection.

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