Micropower LDO offers two 100 mA outputs from 3 x 3 mm DFN.
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Press Release Summary:
Model LT3023 low-noise micropower regulator operates from 1.8-20 V input voltage range and delivers dual 100 mA outputs at voltages as low as 1.22 V. With 0.01 µF bypass capacitor, output noise drops to 20 µVRMS over 10 Hz to 100 kHz bandwidth. Stable with 1 µF ceramic output capacitor, unit features 20 µA quiescent current per channel, adjustable output, and overcurrent and overtemperature protection. No protection diodes are needed.
Original Press Release:
Low Noise, Micropower LDO Offers Dual 100mA Outputs from 3mm x 3mm DFN
MILPITAS, CA - January 12, 2004 - Linear Technology announces the LT3023, a dual 100mA, low dropout, low noise micropower regulator. It operates from an input voltage range of 1.8V to 20V, delivering two 100mA outputs at voltages as low as 1.22V. Its wide 1.8V to 20V input voltage accommodates sources from single cell Li-Ion or multicell alkaline/NiMH, as well as higher voltage fixed rails. With a 0.01uF bypass capacitor, output noise drops to 20uVRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 20uA quiescent current per channel makes it ideal for maximizing run-time. Quiescent current in shutdown is less than 1uA per channel and two shutdown pins allow independent control. Dropout voltage is only 300mV (at 100mA), enabling very low dropout applications such as 3.6V input to a regulated 3.3V output.
The LT3023 regulator is stable with tiny 1uF output capacitors without the series resistance required by other regulators. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The LT3023 is available with an adjustable output in either a thermally enhanced MSOP-10 package or a 3mm x 3mm DFN.
The LT3023 is available from stock with 1,000-piece pricing starting at $1.70 each for the DFN and $1.60 each for the MSOP.
Summary of Features: LT3023
Output Current: 100mA/Channel
Very Low, Low Dropout Voltage: 300mV at 100mA
Wide Input Voltage Range: 1.8V to 20V
Low Quiescent Current: 20uA/Channel, Shutdown Current: <0.1uA
Low Noise: 20uVRMS (10Hz to 100kHz)
Stable with 1uF Ceramic Output Capacitor
Reverse Battery Protected, No Reverse Current
No Protection Diodes Needed
Overcurrent & Overtemperature Protected
Thermally Enhanced 10-Lead MSOP & DFN Package
Company Background
Linear Technology Corporation was founded in 1981 as a manufacturer of high performance linear integrated circuits. Linear Technology products include operational, instrumentation and audio amplifiers; voltage regulators, power management devices, DC-DC converters and voltage references; comparators; monolithic filters; communications interface circuits; one-chip data acquisition sub-systems; pulse-width modulators and sample-and-hold devices; and high frequency devices. Applications for Linear Technology's high performance circuits include wireless and broadband telecommunications infrastructure, cellular telephones, networking products and satellite systems, notebook and desk top computers, computer peripherals, video/multimedia, industrial and medical instrumentation, automotive electronics, factory automation, process control, military and space systems, and high-end consumer products including digital cameras, MP3 players and other electronic products.Note: LT, AND LTC are registered trademarks of Linear Technology Corp.
