Ling (Linear Technology) the company launched two phase step-down LTC3709 type synchronous DC/DC controller, the device has a fast transient response, can eliminate caused by PCB routing and big load current voltage error. Devices in the integration of the differential amplifier measurement output voltage directly on the load and pressure drop compensation error. It can also inhibit the PCB go line or inductively coupled into the common-mode signal feedback pin.
It can also inhibit the PCB go line or inductively coupled into the common-mode signal feedback pin. LTC3709 turn on time of 100 ns, can be very fast load transient response, and the use of smaller size of the output capacitor. The IC adopts the slice of phase locked loop can be realized between the two output channels separated and locked in an external clock. LTC3709 can also use the least amount of input and output capacitors offer as low as 0.6 V load as much as 40 a current, apply to the server, large storage arrays, industrial applications such as single board computer and control system.
LTC3709 is a kind of drive n-channel MOSFET current mode step-down type synchronous controller. The user can select design with some resistance to optimize the current balance, or don't have to test the resistance in order to improve efficiency and reduce the solution cost. In order to properly start the system with multiple DC/DC voltage stabilizer, TRACK input pins allow LTC3709 output voltage tracking other output voltage stabilizer.
LTC3709 work in 4 v to 30 v input power, USES the constant through time and value of current control architecture, to provide a very small duty cycle. LTC3709, for example, when 200 KHZ compared to 2% to 90% of the work, 28 V to 4.5 V to convert the input voltage of 2.5 V low voltage output. The IC is for the output over voltage and short circuit fault protection function. LTC3709 adopts two kinds of packaging, respectively, 5 mm x 5 mm QFN and 36 fuses SSOP.
LTC3709 rated temperature was minus 40 oc to 85 oc. In 1000 as unit to buy in bulk, every piece of starting at $4.90. Summary: performance LTC3709
