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TPS767D325QPWPRQ1 Datasheet(PDF) 2 Page - Texas Instruments |
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TPS767D325QPWPRQ1 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 26 page TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1 DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS SGLS231A − FEBRUARY 2004 − JUNE 2008 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 t − Time − μs LOAD TRANSIENT RESPONSE 1 0.5 60 40 20 80 100 140 120 160 180 200 0 VO = 3.3 V CL =100 μF TA = 25°C 0 0 50 100 −50 −100 TA − Free-Air Temperature − °C −40 0 20 120 103 −60 40 60 80 100 DROPOUT VOLTAGE vs FREE-AIR TEMPERATURE 102 101 100 10−1 10−2 −20 140 IO = 1 A IO = 10 mA IO = 0 VO = 3.3 V CO = 10 μF description (continued) Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 350 mV at an output current of 1 A for the TPS767D325) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 85 μA over the full range of output current, 0 mA to 1 A). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO family also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to 1 μA at TJ = 25°C. The RESET output of the TPS767D3xx initiates a reset in microcomputer and microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS767D3xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage. The TPS767D3xx is offered in 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges. The TPS767D3xx family is available in 28 pin PWP TSSOP package. They operate over a junction temperature range of −40 °C to 125°C. |
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