36-V, 1-A Step-down Synchronous Regulator Simplifies Intermediate Power Bus and Point-Of-Load Power Designs
17 Julho 2012 - 9:00AM
Business Wire
Analog Devices, Inc. (ADI), a global leader in high-performance
semiconductors for signal-processing applications, today introduced
the ADP2441, DC-to-DC switching regulator, the most recent in ADI’s
growing portfolio of integrated power management switching
regulators. The new 36-V, 1-A (amp) step-down regulator integrates
both low-on-resistance, high-side and low-side power switches to
provide compact point-of-load design and offers more than 94
percent efficiency. Under light load conditions, the ADP2441 will
automatically operate in PSM (pulse-skip mode) to reduce switching
losses and improve energy efficiency.
The ADP2441 supports a wide input range from 4.5 V to 36 V to
accommodate a diversity of point-of-load applications including
industrial and communication equipment and healthcare electronics.
Output voltage is adjustable from 0.6 V to 90 percent of input
voltage. The new regulator also offers low minimum on-time of 50 ns
(nano seconds) saving valuable board space and cost through its
suitability for single-stage, high input to low output power
conversion.
By using a current-mode constant frequency PWM (pulse-width
modulation) control scheme, the ADP2441 offers excellent stability
and transient response to minimize the output voltage ripple. The
switching frequency of the regulator can be adjusted from 300 kHz
to 1 MHz. The new regulator also offers precision enable, voltage
tracking and power-good features to enable a simple and reliable
start-up sequence. System reliability and protection are enhanced
further through over-current protection, under-voltage lockout and
thermal shutdown. The ADP2441 operates over the −40°C to +125°C
junction temperature range and is available in compact 3 mm × 3 mm
12-lead LFCSP package. Analog Devices’ integrated power management
switching regulators are also supported by the ADIsimPower™ design
tools, which makes selecting components, simulating power supply
performance and building evaluation circuits easy and fast.
- Download data sheets and view product
page: http://www.analog.com/ADP2441
- Learn more about ADI’s DC-to-DC
regulators:
http://www.analog.com/en/power-management/switching-regulators-integrated-fet-switches/products/index.html
- View discussions and FAQs on Analog
Devices’ Power Management products on Engineer Zone™, an online
technical support community
ADP2441 Synchronous Regulator Key Features
- Wide input voltage range up of 4.5 V to
36 V supports a diverse range of point-of-load applications
- Peak efficiency up to 94 percent
improves system-power efficiency and reduces thermal
dissipation
- Low minimum on time of 50 ns supports
high input voltage to low output voltage conversion
- Automatic power-saving mode at light
load
- Output voltage is adjustable to 0.6V
with ±1% accuracy
- Precision-enable input, voltage
tracking input and power-good feature
- Adjustable switching frequency from 300
kHz to 1 MHz
- Supported by ADIsimPowerTM design
tools
Availability and Pricing
Product
SampleAvailability
Full Production
Price each @1k
units
Packaging ADP2441 Now Now $1.78
3 mm × 3 mm12 lead LFCSP
ADP2441-EVALZ Now Now $60.00 -
About Analog Devices
Innovation, performance, and excellence are the cultural pillars
on which Analog Devices has built one of the longest standing,
highest growth companies within the technology sector. Acknowledged
industry-wide as the world leader in data conversion and signal
conditioning technology, Analog Devices serves over 60,000
customers, representing virtually all types of electronic
equipment. Celebrating over 40 years as a leading global
manufacturer of high-performance integrated circuits used in analog
and digital signal processing applications, Analog Devices is
headquartered in Norwood, Massachusetts, with design and
manufacturing facilities throughout the world. Analog Devices is
included in the S&P 500 Index.
Follow ADI on Twitter at http://www.twitter.com/ADI_News.
To subscribe to Analog Dialogue, ADI's monthly technical
journal, visit: http://www.analog.com/subscribe.
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