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TPS70758 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS70758 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 34 page TPS70745, TPS70748, TPS70751, TPS70758, TPS70702 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS WITH POWER UP SEQUENCING FOR SPLIT VOLTAGE DSP SYSTEMS SLVS291 – MAY 2000 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 detailed block diagram – adjustable voltage version UVLO Thermal Shutdown Shutdown 2.5 V + – Current Sense Reference VREF VREF ENA_1 ENA_1 Rising Edge Deglitch 0.95 × VREF FB2 Falling Edge Delay VIN1 0.95 × VREF FB1 Rising Edge Deglitch Falling Edge Deglitch 0.83 × VREF FB2 UV Comp Falling Edge Deglitch 0.83 × VREF FB1 UV Comp Power Sequence Logic SHUTDOWN ENA_1 ENA_2 VIN1 Current Sense + – ENA_2 ENA_2 VREF VIN1 (2 Pins) GND EN SEQ (see Note B) VIN2 (2 Pins) VOUT1 (2 Pins) FB1 (see Note A) PG1 MR2 RESET MR1 FB2 (see Note A) VOUT2 (2 Pins) VIN1 NOTES: A. For most applications, FB1 and FB2 should be externally connected to resistor dividers as close as possible to the device. For other implementations, refer to FB terminals connection discussion in the application information section. B. If the SEQ terminal is floating at the input, VOUT2 will power up first. |
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