5592290c-86c6-40e4-844a-bc0cf90afd02.pdf

Deutsch | Français | Italiano | 简体中文 | 繁體中文 | 日本語 | 한국어


News Release | www.linear.com


High­Res Image • Data Sheet • Word Document


45V 500mA LDO Offers Low 25µVRMS Noise, 60dB PSRR at 1MHz & Active Output Discharge for Load Protection


MILPITAS, CA ­ January 12, 2016 ­ Linear Technology Corporation announces the LT3066, a high voltage, low noise, low dropout voltage linear regulator offering precision, programmable current limit, active discharge, a power good flag and improved power supply rejection ratio (PSRR) capability. The device delivers up to 500mA output current with a 300mV dropout voltage at full load. The LT3066 includes an internal NMOS pull­down that discharges the output voltage if either the SHDN pin is driven low or the input voltage is turned off. This rapid active output discharge helps protect the load in applications requiring power conditioning on both start­up and shutdown, such as high­end imaging sensors.

The LT3066 features a wide 1.8V to 45V input voltage range and output voltage is adjustable from 0.6V to 19V. A single REF/BYP pin capacitor provides low noise operation of only 25µVRMS across a 10Hz to 100kHz bandwidth,

and also reference soft­start functionality, preventing output voltage overshoot at turn­on. Output voltage tolerance is

highly accurate at ±2% over line, load and temperature. An additional single INFILT pin capacitor improves PSRR by 15dB to 20dB for frequencies from 20kHz to 1MHz, with 1MHz PSRR reaching 60dB.


The LT3066 operates with a very small, low cost, 3.3µF ceramic output capacitor, optimizing stability and transient response. The device's PWRGD flag indicates output regulation. One resistor programs the external precision current limit (±10% over temperature). Moreover, the device's internal protection circuitry includes reverse­battery protection, reverse­current protection, current limit with foldback, and thermal limiting. The device's wide input and output voltage ranges, fast transient response, low quiescent current of 64µA (operating) and


The LT3066 is available in thermally enhanced 12­lead 3mm x 4mm DFN and 12­lead MSOP packages, both with a compact footprint. The E­ and I­grade versions are available from stock with an operating junction temperature of

­40°C to +125°C. 1,000 piece pricing starts at $2.00 each for the E­grade. For more information, visit www.linear.com/product/LT3066.


Summary of Features: LT3066


Output Current: 500mA Dropout Voltage: 300mV

Input Voltage Range: 1.8V to 45V Programmable Precision Current Limit:

±10%

Active Discharge Power Good Flag

Single INFILT Capacitor Enhances High Frequency PSRR by 15dB to 20dB

Low Noise: 25µVRMS (10Hz to 100kHz) Adjustable Output Voltage: 0.6V to 19V

Single Capacitor Soft­Starts Reference

& Lowers Output Noise

Output Tolerance: ±2% Over Line, Load

& Temperature

Stable with Low ESR, Ceramic Output Capacitors (3.3µF minimum)

Current Limit Foldback Protection Shutdown Current:

Reverse Battery & Thermal Limit Protection

12­Lead 3mm x 4mm DFN & 12­Lead MSOP Packages

45VIN, 0.6VOUT 500mA Low Noise LDO with Active Discharge



Click Photo for High­Res Image

The USA list pricing shown is for budgetary use only. International prices may differ due to local duties, taxes, fees and exchange rates.


About Linear Technology


Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing and marketing a broad line of high performance analog integrated circuits for major companies worldwide for over three decades. The Company's products provide an essential bridge between our analog world and the digital electronics in communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. Linear Technology produces power management, data conversion, signal conditioning, RF and

interface ICs, µModule® subsystems, and wireless sensor network products. For more information, visit

www.linear.com.


, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks of Linear Technology Corp. All other trademarks are the property of their respective owners.


Worldwide Contacts


North America and General Information John Hamburger

Tel: (408) 432­1900 ext. 2419

jhamburger@linear.com


Doug Dickinson

Tel: (408) 432 1900 ext. 2233

ddickinson@linear.com

China (PRC) Fanny Lau

Tel: 852­2428­0303

flau@linear.com


Angela Ao

Tel: (8610)6522 8081

angela.ao@ebacomms.com

Japan

Yoshikazu Funasaki Tel: 81­3­5226­7291

yfunasaki@linear.com


Takashi Matsuda

Tel: +81­3­3255­8411

linear@chugai­ad.co.jp


Korea Desiree Park

Tel: +82­2­565­6625

desiree@ezwire.com

Taiwan Alice Wang

Tel: +886­2­28974705

alice@ezwire.com

Germany

Ralf Stegmann

Tel: +49 (0) 71319234­11

ralf@ezwire.com


UK & Nordic Alan Timmins

Tel: +44­1252­629937

alan@ezwire.com

Italy

Simona Labianca

Tel: +39 340 0571697

simona@ezwire.com

France Clotilde Zeller

Tel: +33 1 4614 87 09

clotilde@ezwire.com


This message was distributed by:


TechWire International Incorporated

Global Media Relations for the Electronics Industry Press Releases ­ Contributed Editorial ­ Media Events 5315 Wirestem Ct ­ Naperville, IL 60564 USA

630.420.8744 ­ www.ezwire.com 0

Linear Technology Corporation issued this content on 2016-01-12 and is solely responsible for the information contained herein. Distributed by Public, unedited and unaltered, on 2016-01-13 00:15:03 UTC

Original Document: http://www.linear.com/docs/47557