XRP7704 Exar Corporation, XRP7704 Datasheet - Page 8

• Manufacturer Part Number: XRP7704
• Description: Quad-output Digital Pwm Buck Controller
• Manufacturer: Exar Corporation

REV 1.1.0
Exposed
3,4,5,6
12,13,
14,15
PAD
7,8
40
9
GPIO0-GPIO3
GPIO4_SDA,
GPIO5_SCL
LDOOUT
ENABLE
VOUT1-
VOUT4
AGND
EXAR CONFIDENTIAL. PROPRIETARY. DO NOT DISTRIBUTE OR COPY.
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.
I
perform GPIO functions in applications when I
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).
2
C serial interface communication pins. These pins can be re-programmed to
Quad-Output Digital PWM Buck Controller
8
2
C bus is not used.
XRP7704