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TPS77901 Datasheet(PDF) 2 Page - Texas Instruments |
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TPS77901 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 20 page TPS77901, TPS77918, TPS77925, TPS77930 250-mA LDO REGULATOR WITH INTEGRATED RESET IN A MSOP8 PACKAGE SLVS283A – MARCH 2000 – REVISED MARCH 2000 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description (continued) The device is enabled when the EN pin is connected to a high-level input voltage. This LDO family also features a sleep mode; applying a TTL low signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than 1 µA at TJ = 25°C. The TPS779xx features an integrated power-on reset, commonly used as a supply voltage supervisor (SVS), or reset output voltage. The RESET output of the TPS779xx initiates a reset in DSP, microcomputer or microprocessor systems at power-up and in the event of an undervoltage condition. An internal comparator in the TPS779xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage. When OUT reaches 95% of its regulated voltage, RESET will go to a high-impedance state after a 220 ms delay. RESET will go to low-impedance state when OUT is pulled below 95% (i.e. over load condition) of its regulated voltage. AVAILABLE OPTIONS TJ OUTPUT VOLTAGE (V) PACKAGED DEVICES J TYP MSOP (DGK) 3.0 TPS77930DGK 2.5 TPS77925DGK –40 °C to 125°C 1.8 TPS77918DGK Adjustable 1.5 V to 5.5 V TPS77901DGK The TPS77901 is programmable using an external resistor divider (see application information). The DGK package is available taped and reeled. Add an R suffix to the device type (e.g., TPS77901DGKR). OUT SENSE 6 5 3 IN IN EN GND 4 7 1 VI 0.1 µF 10 µF + OUT 8 VO RESET Output RESET 2 Figure 1. Typical Application Configuration (For Fixed Output Options) |
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