5 Pin Configuration and Functions

Figure 5-1 MOA Package, 28-Pin QFM (Top View)

Table 5-1 Pin Functions

PIN		I/O⁽¹⁾	DESCRIPTION
NAME	NO.	I/O⁽¹⁾	DESCRIPTION
ADDR	23	I	Connect a resistor from this pin to GND to set the desired PMBus address. Do not leave this pin floating. See PMBus ADDRESS section.
A_EN	10	I	Active high enable input for VOUT_A. Asserting this pin high enables power conversion on the VOUT_A channel.
A_PGOOD	9	O	Open drain Power Good signal of the VOUT_A channel. This pin requires a pullup resistor. This pin is pulled low when a shutdown fault occurs.
AVSN	12	I	Negative input of the remote voltage sense of channel A. Connect this pin to ground at the VOUT_A load for best voltage regulation. Do not let this pin float.
AVSP	11	I	Positive input of the remote voltage sense of channel A. Connect this pin to VOUT_A at the load for best voltage regulation. Do not let this pin float.
B_EN	21	I	Active high enable input for VOUT_B. Asserting this pin high enables power conversion on the VOUT_B channel.
B_PGOOD	22	O	Open drain Power Good signal of the VOUT_B channel. This pin requires a pullup resistor. This pin is pulled low when a shutdown fault occurs.
BVSN	19	I	Negative input of the remote voltage sense of channel B. Connect this pin to ground at the VOUT_B load for best voltage regulation. Do not let this pin float.
BVSP	20	I	Positive input of the remote voltage sense of channel B. Connect this pin to VOUT_A at the load for best voltage regulation. Do not let this pin float.
DNC	24	—	Do not connect. This pin is connected to internal circuitry. Do not connect this pin to other signal or voltage source. Connecting the pin to GND is recommended.
GND	1	G	Power ground of the device. Connect pins 1, 3, 13, and 15 to the bypass caps associated with VIN. Connect pads 1, 3, 13, 15 to the PCB ground planes using multiple vias for optimal thermal performance.
	3
	13
	15
	25
	26
PMBCLK	6	I	PMBus serial clock interface. (Open Drain)
PMBDAT	5	I/O	PMBus bi-directional serial data interface. (Open Drain)
PMBALERT	7	I/O	PMBus bi-directional ALERT pin interface. (Open Drain)
RESET	8	I	Active low RESET input that resets the output voltage to its programmed BOOT voltage. This pin requires a pullup resistor.
VIN	2	I	Input voltage. These pins provide voltage to the power conversion stages of the module. Connect these pins to the PCB VIN planes using multiple vias for optimal thermal performance.
	4
	14
	16
VOUT_A	18	O	Output voltage of channel A. Connect these pins to the output A load. Connect external bypass capacitors between these pins and GND pins 1, 3, and 13.
	27
	28
VOUT_B	17	O	Output voltage of channel B. Connect this pin to the output B load. Connect external bypass capacitors between this pin and GND pin 15.

(1) G = ground, I = input, O = output