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TPS65140RGE Datasheet(PDF) 7 Page - Texas Instruments |
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TPS65140RGE Datasheet(HTML) 7 Page - Texas Instruments |
7 / 24 page www.ti.com 1.6-MHz Oscillator D S VFB 1.146 V Comparator VFB 1.146 V D S D S Vref 1.213 V Vin ~1 V D S SUP SUP D S D S SUP C1− C1+ Vo3 C2+ C2− D S Vref 1.214 V Soft Start Vref 1.213 V SUP ENR BASE FB4 REF FB2 DRV COMP FB1 VIN SW SW FB3 PG GND GND PGND PGND Q1 Q3 Q4 Q5 Q6 Q7 D S D S Q8 Q9 Q10 SUP EN Linear Regulator Controller Reference Output Negative Charge Pump Positive Charge Pump Main boost converter Vref 0 V Current Control D1 D4 D2 D3 FB1 FB2 FB3 D S Q2 SUP Vref 1.213 V FB1 FB2 FB3 System Power Good Bias Vref = 1.213 V Thermal Shutdown Start−Up Sequencing Undervoltage Detection Overvoltage Detection Short Circuit Protection Current Limit and Soft Start Control Logic Gate Drive Circuit Gain Select (Doubler or Tripler Mode) Current Control Soft Start Logic and 1- µs Glitch Filter D S Short Circuit Detect Soft Start Iref = 20 mA GM Amplifier Low Gain SUP (VO) Sawtooth Generator TPS65140 TPS65145 SLVS497B – SEPTEMBER 2003 – REVISED MARCH 2004 FUNCTIONAL BLOCK DIAGRAM 7 |
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