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LP38855S-1.2 |LP38855S12NSN/a7avai1.5A Fast-Response High-Accuracy LDO Linear Regulator with Enable 5-DDPAK/TO-263 -40 to 125


LP38855S-1.2 ,1.5A Fast-Response High-Accuracy LDO Linear Regulator with Enable 5-DDPAK/TO-263 -40 to 125FEATURES DESCRIPTIONThe LP38855 is a high-current, fast-response2• Standard V Values of 0.8V and 1. ..
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LP38855S-1.2
1.5A Fast-Response High-Accuracy LDO Linear Regulator with Enable
LP38855 www.ti.com SNVS461D –OCTOBER 2006–REVISED APRIL 2013 1.5A Fast-Response High-Accuracy LDO Linear Regulator with Enable Check for Samples: LP38855 1FEATURES DESCRIPTION The LP38855 is a high-current, fast-response 2• Standard V Values of 0.8V and 1.2V OUT regulator which can maintain output voltage • Wide V Supply Operating Range of 3.0V to BIAS regulation with an extremely low input to output 5.5V voltage drop. Fabricated on a CMOS process, the • Stable with 10µF Ceramic Capacitors device operates from two input voltages: V BIAS provides power for the internal bias and control • Dropout Voltage of 130 mV (Typical) at 1.5A circuits, as well as drive for the gate of the N-MOS Load Current power transistor, while V supplies power to the load. IN • Precision Output Voltage Across All Line and The use of an external bias rail allows the part to Load Conditions: operate from ultra low V voltages. Unlike bipolar IN regulators, the CMOS architecture consumes – ±1.0% for T = 25°C J extremely low quiescent current at any output load – ±2.0% for 0°C≤ T ≤ +125°C J current. The use of an N-MOS power transistor – ±3.0% for -40°C≤ T ≤ +125°C J results in wide bandwidth, yet minimum external • Over-Temperature and Over-Current capacitance is required to maintain loop stability. Protection The fast transient response of this device makes it • Available in 5 Lead TO-220 and DDPAK/TO-263 suitable for use in powering DSP, Microcontroller Packages Core voltages and Switch Mode Power Supply post regulators. The LP38855 is available in TO-220 and • Custom V Values between 0.8V and 1.2V OUT DDPAK/TO-263 5-Lead packages. are Available Dropout Voltage: 130 mV (typical) at 1.5A load • -40°C to +125°C Operating Temperature Range current. APPLICATIONS Low Ground Pin Current: 10 mA (typical) at 1.5A load current. • ASIC Power Supplies In: – Desktops, Notebooks, and Graphics Cards, Shutdown Current: 1µA (typical) I when EN IN(GND) pin is low. Servers – Gaming Set Top Boxes, Printers and Precision Output Voltage: ±1.0% for T = 25°C and J Copiers ±2.0% for 0°C≤ T ≤ +125°C, across all line and load J conditions • Server Core and I/O Supplies • DSP and FPGA Power Supplies • SMPS Post-Regulator Typical Application Circuit LP38855-x.x V V IN OUT IN OUT C IN 10 PF Ceramic V BIAS BIAS C BIAS C OUT 1 PF 10 PF V EN EN Ceramic GND GND GND 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. 2All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2006–2013, 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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