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LP38858S-1.2 |LP38858S12NSN/a75avai1.5A Fast-Response High-Accuracy LDO Linear Regulator with Soft-Start 5-DDPAK/TO-263 -40 to 125


LP38858S-1.2 ,1.5A Fast-Response High-Accuracy LDO Linear Regulator with Soft-Start 5-DDPAK/TO-263 -40 to 125FEATURES DESCRIPTIONThe LP38858 is a high current, fast response2• Standard V Values of 0.8V and 1. ..
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LP38858S-1.2
1.5A Fast-Response High-Accuracy LDO Linear Regulator with Soft-Start
LP38858 www.ti.com SNVS462D –OCTOBER 2006–REVISED APRIL 2013 1.5A Fast-Response High-Accuracy LDO Linear Regulator with Soft-Start Check for Samples: LP38858 1FEATURES DESCRIPTION The LP38858 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 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: V provides BIAS voltage to drive the gate of the N-MOS power • Dropout Voltage of 130 mV (Typical) at 1.5A transistor, while V is the input voltage which IN Load Current supplies power to the load. The use of an external • Precision Output Voltage across All Line and bias rail allows the part to operate from ultra low V IN Load Conditions: voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent – ±1.0% V for T = 25°C OUT J current at any output load current. The use of an N- – ±2.0% V for 0°C≤ T ≤ +125°C OUT J MOS power transistor results in wide bandwidth, yet – ±3.0% V for -40°C≤ T ≤ +125°C OUT J 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 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 LP38858 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: 130mV (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, Soft-Start: Programmable Soft-Start time. Servers Precision Output Voltage: ±1.0% for T = 25°C and J – Gaming Set Top Boxes, Printers and ±2.0% for 0°C≤ T ≤ +125°C, across all line and load J Copiers conditions • Server Core and I/O Supplies • DSP and FPGA Power Supplies • SMPS Post-Regulator Typical Application Circuit LP38858-x.x V V IN OUT IN OUT C IN 10 PF Ceramic V BIAS BIAS C BIAS C OUT 1 PF 10 PF SS Ceramic GND C SS 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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