XC6365/6366
Series
■NOTES
ON USE
1. Take ample care to ensure that none of the IC's, nor the external component's, absolute maximum ratings are exceeded.
2. Be extremely careful when selecting parts and do not limit your reference to the specifications and characteristics for the
DC/DC converter alone. The IC also depends, to a great extent, upon the external components.
3. Arrange the peripherals in the environs of the IC. In order to reduce wiring impedance, use short, thick wires. In particular,
wire the load capacitor as close as possible and strengthen the ground wiring sufficiently.
4. Ground current during switching may cause the IC's operations to become unstable due to changes in ground voltage, so
please strengthen the IC's GND pin surroundings.
●External
Components
1. Setting soft start time
To set a longer soft start time, please use XC6365C or XC6365D series which soft start function is externally set up.
For the measurement of soft start time T
SS
, the time is needed to be between the maximum and the minimum value indicated
in the chart below. Please set a soft start capacitor C
SS
according to the application.
2. Setting R
FB1
and C
FB
fzfb=1
÷
(2
π ×
C
FB
×
R
FB1
)
As the combination of R
FB1
and C
FB
enable to set fzfb between 0.5kHz to 20kHz, within the realm of fzfb=0.5kHz to
fzfb=20kHz as the chart below can be effective.
Under normal condition, please set the combination to configure around fzfb=10kHz.
714
TOREX [ TOREX SEMICONDUCTOR ]
