A8293SESTR-T A8293 A8293SES QFN28

توضیحات

at the LNB pin is transitioning, the output voltage rise

and fall times can be set by the value of the capacitor connected

from the TCAP pin to GND (CTCAP or C7 in the Applications
Schematic). Note that during start-up, the BOOST pin is precharged to the input voltage minus a voltage drop. As a result,
the slew rate control for the BOOST pin occurs from this voltage.
The value of CTCAP can be calculated using the following formula:

LNB voltages (8 programmable levels) compatible with
all common standards including domestic Japan models
Tracking switch-mode power converter for lowest dissipation
Integrated converter switches and current sensing
Provides up to 700 mA load current
Static current limit circuit allows full current at startup and
13→18V output transition; reliably starts wide load range
Push-pull output stage minimizes 13→18V and 18→13V
output transition times for highly capacitive loads
Adjustable rise/fall time via external timing capacitor
Built-in tone oscillator, factory-trimmed to 22 kHz
facilitates DiSEqC™ tone encoding, even at no-load
Four methods of 22 kHz tone generation, via I2C™ data
bits and/or external pin
Auxiliary modulation input
LNB overcurrent with timer
Diagnostics for output voltage level, input supply UVLO