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TPS62305 Datasheet(PDF) 6 Page - Texas Instruments |
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TPS62305 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 31 page www.ti.com FUNCTIONAL BLOCK DIAGRAM + _ + Power-Save Mode Switching Logic REF REF _ EN R(DIS) P TPS6232x Only N-MOS Current Limit Compator P-MOS Current Limit Compator Gate Driver Anti Shoot-Through P P SW VOUT PGND _ + Comparator Low -1.5% V OUT(NOMINAL) Summing Comparator + + - + + + - - + RAMP HEIGHT 0.1 VIN + - Mid-, High-Frequency Zero-Pole Pair _ + A A R2 R1 See note A VREF C 2R VOUT R 2C A = 3 (DC) - Soft-Start Comp Low 3-MHz Oscillator + PLL Sawtooth Generator Thermal Shutdown Band Gap VREF = 0.4 V Undervoltage Lockout Bias Supply AGND ADJ FB AVIN MODE/SYNC EN VIN NOTE A: : PARAMETER MEASUREMENT INFORMATION AVIN VIN SW U1 L1 ADJ C1 VO 1.6 V/500 mA PGND C2 VI AGND VOUT R1 R2 EN MODE/SYNC A A FB A 1 2 3 8 7 10 6 4 5 9 10 F m List of Components: U1 = TPS6230x L1 = FDK MIPW3226 Series C1, C2 = X5R/X7R 2.7 V . . 6 V TPS62300, TPS62301, TPS62302 TPS62303, TPS62305, TPS62311 TPS62313, TPS62320, TPS62321 SLVS528B – JULY 2004 – REVISED JUNE 2005 6 |
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