J4 Output Connector - Analog Devices ADP5091-2-EVALZ User Manual

ADP5091-2-EVALZ User Guide

J4 OUTPUT CONNECTOR

The J4 output connector (see Figure 12) connects the evaluation
board to the load. In addition to providing power, J4 also provides
other interface connections that allow more interaction between
the evaluation board and the host microcontroller unit (MCU)
on the load. The evaluation board is directly compatible with
the Analog Devices WSN demonstration boards. Table 2 shows
the pinout of the J4 output connector and a brief description of
the pin functions.
Table 2. J4 Output Connector
Pin No. Mnemonic Description
1 VOUT Output voltage supply from the
evaluation board to the load
2 PGOOD PGOOD output signal from the
3 GND Ground
4 DIS_SW DIS_SW input signal to the
5 BATT Supercapacitor voltage (for battery
monitoring)
6 EN Enable LDO
7 BACK_UP Backup voltage (for battery monitoring)
8 REG_OUT Regulated output voltage supply from
the evaluation board to the load
Figure 12. J4 Output Connector
A detailed description of each J4 output connector pin follows:

The VOUT pin (Pin 1) is the output voltage that the
evaluation board delivers to the load.

The
the PGOOD threshold is reached, the
PGOOD pin (Pin 2) high. It is connected to the host MCU
general-purpose input/output (GPIO) input. See the
ADP5091
function.

The GND pin (Pin 3) is the ground connection for the
ADP5091.

Connect the DIS_SW pin (Pin 4) to the host MCU GPIO
output. If the host MCU requires the
temporarily halt the switching regulator function, set this
ADP5091
pin high. Remove the J1 jumper at the same time, if this
function needs to be used. See the
ADP5091
more detailed information on this function.

Connect the BATT pin (Pin 5) to the analog input of the
host MCU to monitor the voltage on the supercapacitor of
the ADP5091-2-EVALZ. Populating R17 and R21 creates a
resistor divider for cases where the MCU analog input
range is lower than the supercapacitor voltage.

The EN pin (Pin 6) is the enable control signal for the
regulated output. Connect this pin to the host MCU GPIO
output to enable or disable the LDO. Also remove R25 if
this function needs to be used.

Connect the BACK_UP pin (Pin 7) to the analog input of
the host MCU to monitor the voltage on the backup
battery of the ADP5091-2-EVALZ. Populating R16 and
R20 creates a resistor divider for cases where the MCU
analog input range is lower than the supercapacitor voltage.

The REG_OUT pin provides an additional output with a
different voltage than VOUT when VOUT is using bypass
mode (see Table 1).
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ADP5091 has a programmable PGOOD signal. When
data sheet for more detailed information on this
UG-927
ADP5091 sets the
ADP5091 to
ADP5091 data sheet for