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TEA1541 датащи(PDF) 3 Page - NXP Semiconductors |
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TEA1541 датащи(HTML) 3 Page - NXP Semiconductors |
3 / 19 page 2003 Aug 11 3 Philips Semiconductors Product specification SMPS control IC with synchronization function TEA1541 1 FEATURES 1.1 Distinctive features • Universal mains supply operation (70 to 276 V AC) • High-level of integration requiring few external components • Synchronization with internal frequency divider • Frequency independent over-power protection. 1.2 Green features • Frequency reduction at low power standby for improved system efficiency (<3 W) • Burst mode operation for very low power standby levels (<1 W) • On-chip start-up current source. 1.3 Protection features • Safe restart mode for system fault conditions • Continuous mode protection using demagnetization detection (zero switch-on current) • Accurate and adjustable overvoltage protection • Winding short-circuit protection • Undervoltage protection (foldback during overload) • Overtemperature protection • Adjustable low overcurrent protection (OCP) trip level • Soft (re)start • Mains voltage-dependent operation-enabling level. 2 GENERAL DESCRIPTION The TEA1541 is a second generation GreenChipTM(1) Switched Mode Power Supply (SMPS) controller IC that operates directly from the rectified universal mains. A high-level of integration provides a cost-effective power supply requiring only a few external components. The TEA1541 controller enables easy design of highly efficient, reliable switched mode power supplies. Its internal oscillator can be synchronized to pulses from an external signal source. External synchronizing pulses whose frequency is above the SMPS switching frequency range are divided by an internal divider. Special built-in green functions ensure optimum efficiency at all power levels. At low power (standby) levels, the SMPS supply operates at a lower frequency. In burst standby mode, power consumption can be reduced to less than 1 W. The proprietary EZ-HV SOI process allows start-up directly from the rectified mains voltage, avoiding the need for bleeder circuits, and also saves energy. A low voltage BICMOS implements accurate control and high speed protection functions. (1) GreenChip is a trademark of Koninklijke Philips Electronics N.V. 3 ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TEA1541P DIP8 plastic dual-in-line package; 8 leads (300 mil) SOT97-1 |
Аналогичный номер детали - TEA1541 |
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Аналогичное описание - TEA1541 |
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