Product category: Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LTC3736-2
Edited by the Electronicstalk Editorial Team on 25 January 2006
Power controller isn't fussy about
MOSFET choice
The LTC3736-2 is a two-phase dual synchronous step-down switching regulator controller with output tracking that drives a wide range of external power MOSFETs.
Linear Technology has announced the LTC3736-2, a two-phase dual synchronous step-down switching regulator controller with output tracking that drives a wide range of external power MOSFETs Its 2.75 to 9.8V input range enables it to operate from a wide range of inputs, from single cell Li-ion, multiple-cell NiCd/NiMH, as well as fixed 5V inputs
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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It can deliver outputs as low as 0.6V.
The LTC3736-2's constant frequency current mode architecture with MOSFET VDS sensing eliminates the need for sense resistors while improving efficiency.
By operating the two controllers out of phase, both power loss and noise due to the ESR of the input capacitance are minimised.
The LTC3736-2's switching frequency can be programmed up to 750kHz, allowing the use of small surface mount inductors and capacitors.
For noise sensitive applications, the LTC3736-2 switching frequency can be externally synchronised from 250 to 850kHz utilising a phase locked loop (PLL).
Pulse skipping operation provides high efficiency at light loads while 100% duty cycle capability provides low dropout operation, extending operating time in battery-powered systems.
Other features include an internal soft-start, power good output voltage monitor and overvoltage protection.
The LTC3736EUF-2 is available from stock in a 4 x 4mm QFN-24 package.
Pricing starts at $3.90 each for 1000-piece quantities. Request a free brochure from Linear Technology Corp ...
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