Linear Technology has released the LTC3611, a synchronous buck regulator that delivers up to 10 A of continuous output at voltages of 0.6.
It operates from an input voltage of 4.5 to 32 (36 ABS max), making it suitable for applications with multicell Li-Ion, lead acid batteries or fixed voltage rails up to 32. Its valley current control architecture delivers low duty cycle operation at high frequencies with good transient response.
The operating frequency is set by an external resistor. Switching frequencies of up to 1 MHz allow the use of small, low-cost ceramic capacitors and low-profile inductors.
The device uses internal switches with an RDS(ON) of 15 and 9 mΩ to deliver efficiencies up to 95%. It can be configured for discontinuous or forced continuous operation. Continuous operation reduces noise and RF interference while discontinuous mode provides high efficiency by reducing switching losses at light loads while requiring 900 µA of quiescent current.
Additional features include a power-good voltage monitor, adjustable current limit, output overvoltage protection and programmable soft-start.
Phone: 02 9644 7722
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