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TEA1751T 数据表(PDF) 3 Page - NXP Semiconductors |
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TEA1751T 数据表(HTML) 3 Page - NXP Semiconductors |
3 / 29 page TEA1751T_LT_2 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 — 23 December 2009 3 of 29 NXP Semiconductors TEA1751T; TEA1751LT GreenChip III SMPS control IC 5. Block diagram Remark: For the TEA1751L the time-out is latched. For the TEA1751 the time-out is safe restart. Fig 1. Block diagram LOW VIN TIMER 50 μs TIMER 4 μs PFC PROT VoOVP VoSTART FB VoSHORT LOW VIN OCP PFC DRIVER ENABLE PFC START STOP PFC 500 mV SOFT START PFCGATE VALLEY DETECT ZCS BLANK 2.50 V 2.7 V 1.25 V MAX TIMEOUT EXT PROT OTP OvpFB LATCH RESET PROT EXT PROT Vstartup Vth(UVLO) LATCHED PROTECTION CHARGE CONTROL STARTFB START STOP PFC PROT VCC GOOD CHARGE S S S R PFC OSC PFC PROT PROT LATCH RESET ENABLE PFC R S Q VCC GOOD VoSTART FB LOW POWER EXT PROT SMPS CONTROL START SOFT START FB ENABLE FB BLANK Q R S FB OSC TON MAX Freq Red. EXT PROT LOW POWER TIME OUT FB DRIVER FB GATE DRV 12 13 PFC DRIVER PFC GATE VINSENSE PFCCOMP VOSENSE PFCSENSE PFCAUX OTP CHARGE VALLEY DETECT OTP INTERNAL SUPPLY ZCS FB GATE FBAUX FBSENSE COUNTER OVP OvpFB 1.12 V 3.5 V 7 6 11 8 9 HV VCC 16 1 GND 5 3 10 4 FBCTRL LATCH 80 mV PFCDRIVER FBDRIVER Vstartup Vth(UVLO) 014aaa299 DRV PROT ENABLE FB 80 μA 60 μA 30 μA 60 μA 3.7 V LOW POWER OCP Freq. Red. 1.25 V FB DRIVER 2.5 V 3.5 V TEMP 100 mV 15 μA BOOST BOOST TIMEOUT TON MAX VoSHORT VUVLO SAFE RESTART PROTECTION S S R S (TEA1751 only) OPP OPP OPP MIN S (TEA1751L only) 2 |
类似零件编号 - TEA1751T |
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类似说明 - TEA1751T |
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