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TPS77901DGK Datasheet(PDF) 1 Page - Texas Instruments |
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TPS77901DGK Datasheet(HTML) 1 Page - Texas Instruments |
1 / 22 page TPS77901, TPS77918, TPS77925, TPS77930 250-mA LDO REGULATOR WITH INTEGRATED RESET IN A MSOP8 PACKAGE SLVS283D – MARCH 2000 – REVISED OCTOBER 2000 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Open Drain Power-On Reset With 220-ms Delay D 250-mA Low-Dropout Voltage Regulator D Available in 1.8-V, 2.5-V, 3-V, Fixed Output and Adjustable Versions D Dropout Voltage Typically 200 mV at 250 mA (TPS77930) D Ultralow 92-µA Quiescent Current (Typ) D 8-Pin MSOP (DGK) Package D Low Noise (55 µVrms) With No Bypass Capacitor (TPS77918) D 2% Tolerance Over Specified Conditions For Fixed-Output Versions D Fast Transient Response D Thermal Shutdown Protection D See the TPS773xx and TPS774xx Family of Devices for Active Low Enable description The TPS779xx is a low-dropout regulator with integrated power-on reset. The device is capable of supplying 250 mA of output current with a dropout of 200 mV (TPS77930). Quiescent current is 92 µA at full load dropping down to 1 µA when the device is disabled. The device is optimized to be stable with a wide range of output capacitors including low ESR ceramic (10 µF) or low capacitance (1 µF) tantalum capacitors. The device has extremely low noise output performance (55 µVrms) without using any added filter capacitors. TPS779xx is designed to have a fast transient response for larger load current changes. The TPS779xx is offered in 1.8-V, 2.5-V, and 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 2% over line, load, and temperature ranges. The TPS779xx family is available in 8-pin MSOP (DGK) packages. Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 200 mV at an output current of 250 mA for 3.3 volt option) 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 92 µA over the full range of output current, 0 mA to 250 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. 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. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright 2000, Texas Instruments Incorporated FB/SENSE RESET EN GND OUT OUT IN IN TPS779xx DGK PACKAGE (TOP VIEW) 1 2 3 4 8 7 6 5 200 150 100 0 –50 –30 –10 10 30 50 70 300 350 400 90 110 130 250 50 TPS77930 DROPOUT VOLTAGE vs JUNCTION TEMPERATURE TJ – Junction Temperature – °C IO= 0.05 A IO= 0.15 A IO= 0.25 A VI = 2.9 V |
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