Product category: Power Supply ICs and Controllers
News Release from: Maxim Integrated Products | Subject: MAX1927/MAX1928
Edited by the Electronicstalk Editorial Team on 16 September 2002
Compact convertors power sub-1V
microprocessors
The MAX1927/MAX1928 step-down DC/DC convertors are the first such devices in a 10-pin microMAX package to provide over 800mA at output voltages down to 0.75V.
The MAX1927/MAX1928 step-down DC/DC convertors are the first such devices in a 10-pin microMAX package to provide over 800mA at output voltages down to 0.75V They switch at a fixed 1MHz to reduce external component size and provide low-noise outputs
This article was originally published on Electronicstalk on 27 Aug 2002 at 8.00am (UK)
Related stories
Speedy DAC claims dynamic superiority for comms
The MAX5195 is a 14bit 260Msample/s DAC claimed to provide the world's best dynamic performance in spurious-free dynamic range, intermodulation distortion and signal to noise ratio.
They are the smallest and most efficient way to generate low-voltage core supplies for cell phones, smart phones, PDAs, and digital still cameras.
The MAX1927/MAX1928 include a low on-resistance internal mosfet switch and synchronous rectifier to maximise efficiency and minimise external component count.
No external diode is needed.
The 100% duty-cycle operation allows a dropout voltage of only 225mV at 800mA.
The input voltage range is 2.6 to 5.5V.
The output has 2% tolerance.
The MAX1928 output is preset with internal resistors at popular voltages of 1.5V (MAX1928EUB15), 1.8V (MAX1928EUB18), and 2.5V (MAX1928EUB25).
The MAX1927REUB has an adjustable output range down to 0.75V using an external resistor-divider.
Both feature built-in soft-start to limit startup currents, power-OK output, and selectable forced-PWM operation for lowest noise at all load currents.
The MAX1927/MAX1928 are available in space-saving 10-pin microMAX packages screened for the extended-industrial temperature range (-40 to +85C).
Prices start at $1.60 (1000-up, FOB USA).
An evaluation kit is available to speed designs.
• Maxim Integrated Products: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
