XRP7704 Datasheet, PDF (8/31 Pages) Exar Corporation – Quad-Output Digital PWM Buck Controller

REV 1.1.0
XRP7704
Quad-Output Digital PWM Buck Controller
3,4,5,6
7,8
12,13,
14,15
40
9
Exposed
PAD
GPIO0-GPIO3
GPIO4_SDA,
GPIO5_SCL
VOUT1-
VOUT4
LDOOUT
ENABLE
AGND
These pins can be configured as inputs or outputs to implement custom flags,
power good signals and enable/disable controls. A GPIO pin can also be
programmed as an input clock synchronizing IC to external clock. Refer to the
“GPIO Pins” Section and the “External Clock Synchronization” Section for more
information.
I²C serial interface communication pins. These pins can be re-programmed to
perform GPIO functions in applications when I²C bus is not used.
Voltage sense.
Connect to the output of the corresponding power stage.
Output of the Standby LDO. It can be configured as a 5V or 3.3V output. A
compensation capacitor should be used on this pin [see Application Note].
If ENABLE is pulled high, the chip powers up (logic reset, registers configuration
loaded, etc.). If pulled low for longer than 100us, the XRP7704 is placed into
shutdown.
Analog Ground.
Connect to analog ground (as noted above for pin 11).
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