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TEA152X データシート(PDF) 4 Page - NXP Semiconductors |
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TEA152X データシート(HTML) 4 Page - NXP Semiconductors |
4 / 20 page TEA152X All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 04 — 14 September 2010 4 of 20 NXP Semiconductors TEA152x SMPS ICs for low-power systems 7. Pinning information 7.1 Pinning 7.2 Pin description 8. Functional description The TEA152x family is the heart of a compact flyback converter, with the IC placed at the primary side. The auxiliary winding of the transformer can be used for indirect feedback to control the isolated output. This additional winding also powers the IC. A more accurate control of the output voltage and/or current can be implemented with an additional secondary sensing circuit and optocoupler feedback. The TEA152x family uses voltage mode control. The frequency is determined by the maximum transformer demagnetizing time and the time of the oscillator. In the first case, the converter operates in the Self-Oscillating Power Supply (SOPS) mode. In the latter case, it operates at a constant frequency, which can be adjusted with external Fig 2. Pin configuration DIP8 Fig 3. Pin configuration SO14 TEA152xP VCC DRAIN GND n.c. RC SOURCE REG AUX 001aae137 1 2 3 4 6 5 8 7 TEA152xT VCC DRAIN GND n.c. GND n.c. GND SOURCE GND GND RC GND REG AUX 001aae138 1 2 3 4 5 6 7 8 10 9 12 11 14 13 Table 3. Pin description Symbol Pin Description DIP8 SO14 VCC 1 1 supply voltage GND 2 2, 3, 4, 5, 9, 10 ground RC 36frequency setting REG 4 7 regulation input AUX 5 8 input for voltage from the auxiliary winding for timing (demagnetization) SOURCE 6 11 source of the internal MOS switch n.c. 7 12, 13 not connected DRAIN 8 14 drain of the internal MOS switch; input for the start-up current and valley sensing |
同様の部品番号 - TEA152X_10 |
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同様の説明 - TEA152X_10 |
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