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LP38853 数据表(PDF) 1 Page - Texas Instruments |
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LP38853 数据表(HTML) 1 Page - Texas Instruments |
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1 / 28 page  LP38853 www.ti.com SNVS335D – DECEMBER 2006 – REVISED APRIL 2013 LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start Check for Samples: LP38853 1 FEATURES DESCRIPTION The LP38853-ADJ is a high current, fast response 2 • Adjustable VOUT Range of 0.80V to 1.8V regulator which can maintain output voltage • Wide VBIAS Supply Operating Range of 3.0V to regulation with extremely low input to output voltage 5.5V drop. Fabricated on a CMOS process, the device • Stable with 10µF Ceramic Capacitors operates from two input voltages: VBIAS provides voltage to drive the gate of the N-MOS power • Dropout Voltage of 240 mV (typical) at 3A Load transistor, while VIN is the input voltage which Current supplies power to the load. The use of an external • Precision VADJ Across All Line and Load bias rail allows the part to operate from ultra low VIN Conditions: voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent – ±1.5% VADJ for TJ = 25°C current at any output load current. The use of an N- – ±2.0% VADJ for 0°C ≤ TJ ≤ +125°C MOS power transistor results in wide bandwidth, yet – ±3.0% VADJ for -40°C ≤ TJ ≤ +125°C minimum external capacitance is required to maintain • Over-Temperature and Over-Current loop stability. Protection The fast transient response of this device makes it • Available in 8 Lead SO PowerPAD, 7 Lead PFM suitable for use in powering DSP, Microcontroller and 7 Lead DDPAK Packages Core voltages and Switch Mode Power Supply post regulators. The part is available in SO PowerPAD • −40°C to +125°C Operating Junction 8–pin, PFM 7–pin, and DDPAK 7-pin packages. Temperature Range Dropout Voltage: 240 mV (typical) at 3A load APPLICATIONS current. • ASIC Power Supplies in: Low Ground Pin Current: 10 mA (typical) at 3A load current. – Desktops, Notebooks, and Graphics Cards, Servers Soft-Start: Programmable Soft-Start time. – Gaming Set Top Boxes, Printers and Precision ADJ Voltage: ±1.5% for TJ = 25°C, and Copiers ±2.0% for 0°C ≤ TJ ≤ +125°C, across all line and load • Server Core and I/O Supplies conditions • DSP and FPGA Power Supplies • SMPS Post-Regulator 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 © 2006–2013, 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. |
类似零件编号 - LP38853_15 |
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类似说明 - LP38853_15 |
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