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LP3892ESX-1.5 Datasheet(PDF) 1 Page - Texas Instruments |
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LP3892ESX-1.5 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 18 page LP3892 www.ti.com SNVS236D – SEPTEMBER 2003 – REVISED APRIL 2013 LP3892 1.5A Fast-Response Ultra Low Dropout Linear Regulators Check for Samples: LP3892 1 FEATURES DESCRIPTION The LP3892 is a high current, fast response regulator 2 • Ultra Low Dropout Voltage (140 mV at 1.5A which can maintain output voltage regulation with typ) minimum input to output voltage drop. Fabricated on • Low Ground Pin Current a CMOS process, the device operates from two input • Load Regulation of 0.04%/A voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input • 60 nA Typical Quiescent Current in Shutdown voltage which supplies power to the load. The use of • 1.5% Output Accuracy (25°C) an external bias rail allows the part to operate from • TO-220, DDPAK/TO-263 and SO PowerPAD-8 ultra low Vin voltages. Unlike bipolar regulators, the Packages CMOS architecture consumes extremely low quiescent current at any output load current. The use • Over Temperature/Over Current Protection of an N-MOS power transistor results in wide • −40°C to +125°C Junction Temperature Range bandwidth, yet minimum external capacitance is required to maintain loop stability. APPLICATIONS The fast transient response of these devices makes • DSP Power Supplies them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode • Server Core and I/O Supplies Power Supply post regulators. The parts are available • PC Add-in-Cards in TO-220, DDPAK/TO-263 and SO PowerPAD-8 • Local Regulators in Set-Top Boxes packages. • Microcontroller Power Supplies Dropout Voltage:140mV (typ) at 1.5A load current. • High Efficiency Power Supplies Ground Pin Current: 3 mA (typ) at full load. • SMPS Post-Regulators Shutdown Current: 60 nA (typ) when S/D pin is low. Precision Output Voltage: 1.5% room temperature accuracy. TYPICAL APPLICATION CIRCUIT At least 10 µF of input and output capacitance is required for stability. *Tantalum capacitors are recommended. Aluminum electrolytic capacitors may be used for restricted temperature range. See application hints. 1 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. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2003–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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