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TEA1532T Datasheet(PDF) 3 Page - NXP Semiconductors |
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TEA1532T Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 27 page 9397 750 13113 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Preliminary data sheet Rev. 01 — 28 May 2004 3 of 27 Philips Semiconductors TEA1532 GreenChip ™II SMPS control IC 5. Block diagram Fig 1. Block diagram. SUPPLY MANAGEMENT internal supply UVLO start Vm VCC 1 2 4 GND S1 CTRL OSCILLATOR DCM AND CCM DETECTION LOGIC LOGIC BROWN-OUT PROTECTION soft start S2 OVER- TEMPERATURE PROTECTION SQ R UVLO Q MAXIMUM ON-TIME PROTECTION POWER-ON RESET −1 VALLEY 80 mV clamp DRIVER START-UP CURRENT SOURCE 0.5 V 6 SENSE 7 DRIVER coa014 5 DEM 8 DRAIN OCP LEB blank Iss Islopecomp 0.63 V SQ R VCC < 4.5 V Q −50 mV Iprot(dem) TEA1532T TEA1532P Osc_Rdy Duty_Max SLOPE COMPENSATION 5.6 V control detect Icharge 3 PROTECT 5.6 V Idischarge 300 Ω protect detect 3 V 2.5 V S3 DCM and CCM |
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