LINEAR TECHNOLOGY CORPORATION
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MILPITAS, CA March 17, 2015 Linear Technology Corporation introduces new high reliability and military temperature grade versions of its LTC4412, a robust "ideal diode" PowerPath™ controller. The LTC4412 permits lowloss ORing of multiple input DC power sources. Its 20mV forward voltage is at least 10 times lower than that of a Schottky diode. As a result, the device increases efficiency by an order of magnitude, due to much lower power loss and less selfheating in systems requiring automatic switching or load sharing between power sources. The LTC4412 is guaranteed to meet performance specifications over a wide range of user conditions including an operating junction temperature range up to 55°C to 150°C across an operating voltage range of 2.5V to 28V.
The LTC4412 also provides reverse battery and MOSFET protection circuitry in a compact SOT package. The device offers a digital control input and an opendrain status output pin to simplify interfacing to a microcontroller. Applications include systems that typically take power from multiple input sources, including high current PowerPath switches, uninterruptible power supplies, backup battery systems, logiccontrolled power switches, and automotive and industrial systems.
Multiple LTC4412 devices can be used to enable switchover between multiple batteries or charging of multiple batteries from a single charger. The LTC4412 status pin (STAT) can be used to control a second Pchannel MOSFET power switch so that both Schottky diodes are eliminated from the diodeOR circuit. The devices's ultralow 11µA quiescent current is independent of the load current.
The LTC4412 is offered in a lowprofile SOT23 package. E and I grades feature an operating junction temperature range of 40°C to +85°C, high reliability H grades from 40°C to +150°C, and military MP grades from 55°C to
+150°C. Devices are in stock and 1,000piece pricing for the H grade starts at $1.85 each, and the MP grade starts at
$3.65 each. For more information, visit www.linear.com/product/LTC4412.
Very Low Loss Replacement for Power
Supply ORing Diodes
Minimal External Components Automatic Switching Between DC Sources
Simplifies Load Sharing with Multiple
Batteries
Low Quiescent Current: 11µA
28V H & MP Grade PowerPath™ Controllers3V to 28V AC/DC Adapter Voltage
Range
2.5V to 28V Battery Voltage Range
Reverse Battery Protection
Drives Almost Any Size MOSFET for Wide Range of Current Requirements MOSFET Gate Protection Clamp Manual Control Input
Low Profile (1mm) ThinSOT™ Package
Click Photo for HighRes ImageThe 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 and ThinSOT and PowerPath are trademarks of Linear Technology Corp. All other trademarks are the property of their respective owners.
John Hamburger
Tel: (408) 4321900 ext. 2419 jhamburger@linear.com
Doug Dickinson
Tel: (408) 432 1900 ext. 2233 ddickinson@linear.com
Fanny Lau
Tel: 85224280303 flau@linear.com
Angela Ao
Tel: (8610)6522 8081 angela.ao@ebacomms.com
Yoshikazu Funasaki Tel: 81352267291 yfunasaki@linear.com
Takashi Matsuda
Tel: +81332558411 linear@chugaiad.co.jp
Desiree Park
Tel: +8225656625 desiree@ezwire.com
Alice Wang
Tel: +886228974705 alice@ezwire.com
Ralf Stegmann
Tel: +49 (0) 7131923411 ralf@ezwire.com
Alan Timmins
Tel: +441252629937 alan@ezwire.com
Simona Labianca
Tel: +39 340 0571697 simona@ezwire.com
Clotilde Zeller
Tel: +33 1 4614 87 09 clotilde@ezwire.com
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