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LP2989IM-2.5 Datasheet(PDF) 1 Page - Texas Instruments |
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LP2989IM-2.5 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 34 page Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LP2989 SNVS083O – FEBRUARY 2005 – REVISED MARCH 2015 LP2989 Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output Capacitors 1 Features 3 Description The LP2989 is a fixed-output 500-mA precision LDO 1 • 2.1-V to 16-V Input Voltage Range regulator designed for use with ceramic output • 2.5-V to 5-V Fixed Output Voltage Options capacitors. • Ultra-Low Dropout Voltage Output noise can be reduced to 18 μV (typical) by • 500-mA Continuous Output Current connecting an external 10-nF capacitor to the bypass • Very Low Output Noise With External Capacitor pin. • < 0.8-µA Quiescent Current When Shutdown Using an optimized Vertically Integrated PNP (VIP) • Low Ground Pin Current at All Loads process, the LP2989 delivers superior performance: • Dropout Voltage: Typically 310 mV at 500-mA • 0.75% Output Voltage Accuracy (A Grade) load, and 1 mV at 100-µA load. • High Peak Current Capability (800-mA typical) • Ground Pin Current: Typically 3 mA at 500-mA • Overtemperature and Overcurrent Protection load, and 110 µA at 100-µA load. • −40°C to 125°C Junction Temperature Range • Sleep Mode: The LP2989 draws less than 0.8-µA quiescent current when SHUTDOWN pin is pulled 2 Applications low. • Notebooks and Desktop PCs • Error Flag: The built-in error flag goes low when the output drops approximately 5% below • PDAs and Palmtop Computers nominal. • Wireless Communication Pins • Precision Output: Output voltage accuracy is • SMPS Post-Regulators 0.75% (A grade) and 1.25% (standard grade) at room temperature. For output voltages < 2 V, see LP2989LV (SNVS086) data sheet. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) WSON (8) 4.00 mm x 4.00 mm LP2989 SOIC (8) 4.90 mm x 3.91 mm VSSOP (8) 3.00 mm x 3.00 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Typical Application *Capacitance values shown are minimum required to assure stability, but may be increased without limit. Larger output capacitor provides improved dynamic response. See the Output Capacitor section. **Shutdown must be actively terminated (see the Shutdown Input Operation section). Tie to IN (pin 4) if not use. 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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