40V, 500mA(IOUT), 2.2MHz Step-Down DC/DC Converter in a Tiny 2mm x 2mm DFN

News Release  www.linear.com
40V, 500mA(IOUT), 2.2MHz Step-Down DC/DC
Converter in a Tiny 2mm x 2mm DFN
MILPITAS, CA – May 22, 2007 – Linear Technology Corporation announces the LT3502/A, a
500mA (IOUT), 40V step-down switching regulator packaged in a 2mm x 2mm DFN. The
LT3502/A’s 3.4V to 40V input voltage range makes it ideal for harsh environment & automotive
load dump and cold-crank conditions. The device can deliver up to 500mA of continuous output
current to voltages as low as 0.8V. Switching frequency is either 1.1MHz (standard version) or
2.2MHz (“A” version), enabling the user to optimize efficiency while avoiding critical
noise-sensitive frequency bands. The combination of its 2mm x 2mm DFN-8 package and high
switching frequency keeps the external capacitors and inductor small, providing a very compact,
thermally efficient footprint.
The LT3502/A utilizes a high efficiency 900mA, 300mVCESAT switch, with the necessary
boost diode, oscillator, control and logic circuitry integrated on-chip. Special design techniques
enable high efficiency over a wide input voltage range & the LT3502/A’s current mode topology
enables fast transient response and excellent loop stability. Other features include internal
compensation, soft-start and short circuit protection.
The LT3502EDC and LT3502AEDC are both available in a 2mm x 2mm DFN 8 package
from stock. They are both priced starting at $1.95 each for 1,000-piece quantities. The
LT3502IDC and LT3502AIDC are tested and guaranteed to operate from a -40°C to 125°C
operating junction temperature. Both devices are priced at $2.34 in 1,000-piece quantities and are
available from stock.
40V, 500mA(IOUT), 2.2MHz Step-Down DC/DC
Converter in a Tiny 2mm x 2mm DFN
page 2
Photo Caption: 40V, 500mA(IOUT), 2.2MHz Step-Down DC/DC Converter in 2mm x 2mm DFN
Summary of Features: LT3502/A
3.4V to 40V Input
500mA Output Current
Switching Frequency: 2.2MHz (LT3502A), 1.1MHz (LT3502)
800mV Feedback Voltage
Short-Circuit Robust
Low Shutdown Current: <1UA
Internally Compensated
Internal Boost Diode
Thermally Enhanced 2mm x 2mm 8-Lead DFN
About Linear Technology
Linear Technology Corporation, a manufacturer of high performance linear integrated circuits,
was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major
public companies in 2000. Linear Technology products include high performance amplifiers,
comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery
chargers, data converters, communications interface circuits, RF signal conditioning circuits, and
many other analog functions. Applications for Linear Technology’s high performance circuits
include telecommunications, cellular telephones, networking products such as optical switches,
notebook and desktop computers, computer peripherals, video/multimedia, industrial
instrumentation, security monitoring devices, high-end consumer products such as digital
cameras and MP3 players, complex medical devices, automotive electronics, factory automation,
process control, and military and space systems. For more information, visit www.linear.com
LT, LTC, LTM, Burst Mode and
are registered trademarks of Linear Technology Corp.
Press Contacts:
John Hamburger, Director Marketing Communications
[email protected]
Tel 408-432-1900 ext 2419
Doug Dickinson, Media Relations Manager
[email protected]
408-432-1900 ext 2233