News Release ? www.linear.com
Dual 3A, 2.5MHz, 42V Boost/Inverting DC/DC Converter with Fault ProtectionMILPITAS, CA -
January 25, 2012 - Linear Technology Corporation announces
the LT8582, a dual independent channel,
step-up DC/DC converter with integrated fault protection
features for output shorts, input/output overvoltages, and
overtemperature conditions. Each channel of the LT8582 uses
two integrated 42V switches: a 1.7A master switch and a 1.3A
slave switch that can be tied together for a total current
limit of 3A. The LT8582 operates from an input voltage range
of 2.5V to 22V with transient protection to 40V, making it
suitable for applications with input sources ranging from a
single-cell Li-Ion to automotive inputs. The LT8582 is ideal
for many local power supply designs as each channel can be
independently configured as either a boost, SEPIC, inverting
or flyback converter. The combination of a 4mm x 7mm DFN
package and tiny externals ensures a very compact footprint
while minimizing solution cost.
The LT8582's low VCESAT switches, 0.27V (tied
together at 2.75A) can deliver efficiencies up to 90%. A
power good pin is offered for ease of use when event-based
sequencing is required. For high voltage outputs, the
LT8582's slave switch enables high power charge pump
topologies which are very efficient and require few external
components. The LT8582's switching frequency can be
programmed via a single resistor or synchronized to an
external clock between 200kHz and 2.5MHz, minimizing external
component sizes and avoiding "noise critical" frequency
bands. Undervoltage lockout (UVLO) is user adjustable for
optimal system performance. Each channel requires a single
feedback resistor to set the output voltage, minimizing
external components. Other features include external
synchronization capability, output short circuit protection
and frequency foldback.
The
LT8582EDKD is available in a 7mm x 4mm DFN-24 package and is
priced at $3.75 each for 1,000 piece quantities. An
industrial temperature (-40°C to 125°C) version, the
LT8582IDKD, is priced at $4.13 each for 1,000 piece
quantities. Both versions are available from stock. For more
information, visit www.linear.com/product/LT8582
Dual 3A, 2.5MHz, 42V Boost/Inverting DC/DC page 2
Converter with Fault Protection
Photo Caption: Dual 3A, 42V Boost, Inverting or SEPIC DC/DC Converter Summary of Features: LT8582? Dual 42V, 3A Combined Power Switch
? Master/Slave (1.7A/1.3A) Switch Design
? Wide Input Range: 2.5V to 22V Operating, 40V Maximum Transient
? Power Good Pin for Event-Based Sequencing
? Switching Frequency Up to 2.5MHz
? Each Channel Easily Configurable as a Boost, SEPIC, Inverting or Flyback Converter
? Low VCESAT Switch: 270mV at 2.75A (Typical)
? Can be Synchronized to an External Clock
? Output Short-Circuit Protection
? High Gain SHDN Pin Accepts Slowly Varying Input Signals
? 24-Pin 7mm × 4mm DFN Package
? Dual 3A, 42V Boost/Inverting DC/DC Converter with Integrated Fault Protection
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 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
John Hamburger, Director Marketing Alan Timmins Communications alan@ezwire.com jhamburger@linear.comTel: +44-1-252-629937
Tel: 408-432-1900 ext 2419
Doug Dickinson, Media Relations Manager ddickinson@linear.com
Tel: 408-432-1900 ext 2233
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