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LP2987IMMX-3.8 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LP2987IMMX-3.8 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 24 page LP2987/LP2988 Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988) General Description The LP2987/8 are fixed-output 200 mA precision LDO volt- age regulators with power-ON reset delay which can be implemented using a single external capacitor. The LP2988 is specifically designed for noise-critical appli- cations. A single external capacitor connected to the Bypass pin reduces regulator output noise. Using an optimized VIP™ (Vertically Integrated PNP) pro- cess, these regulators deliver superior performance: Dropout Voltage: 180 mV @ 200 mA load, and 1 mV @ 1mA load (typical). Ground Pin Current: 1mA @ 200 mA load, and 200 µA @ 10 mA load (typical). Sleep Mode: The LP2987/8 draws less than 2 µA quiescent current when shutdown pin is held low. Error Flag/Reset: The error flag goes low when the output drops approximately 5% below nominal. This pin also pro- vides a power-ON reset signal if a capacitor is connected to the DELAY pin. Precision Output: Standard product versions of the LP2987 and LP2988 are available with output voltages of 5.0V, 3.8V, 3.3V, 3.2V, 3.0V, or 2.8V, with guaranteed accuracy of 0.5% (“A” grade) and 1% (standard grade) at room temperature. Features n Ultra low dropout voltage n Power-ON reset delay requires only one component n Bypass pin for reduced output noise (LP2988) n Guaranteed continuous output current 200 mA n Guaranteed peak output current > 250 mA n SO-8 and mini SO-8 surface mount packages n < 2 µA quiescent current when shutdown n Low ground pin current at all loads n 0.5% output voltage accuracy (“A” grade) n Wide supply voltage range (16V max) n Overtemperature/overcurrent protection n −40˚C to +125˚C junction temperature range Applications n Cellular Phone n Palmtop/Laptop Computer n Camcorder, Personal Stereo, Camera Block Diagrams 10001701 10001702 VIP™ is a trademark of National Semiconductor Corporation. February 2002 © 2002 National Semiconductor Corporation DS100017 www.national.com |
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