Changes To Figure 9; J4 Output Connector - Analog Devices ADP5090-2-EVALZ User Manual

ADP5090-2-EVALZ User Guide

J4 OUTPUT CONNECTOR

The J4 output connector (see Figure 9) connects the demo
board to the load. As well as providing power, the connector
also has other interface connections that allow more interaction
between the demo board and the host microcontroller unit
(MCU) on the load. The connector is directly compatible with
the Analog Devices WSN demo boards. Table 2 shows the pinout
of the J4 output connector and provides a brief description of the
pin functions.
Table 2. J4 Output Connector
Pin
No. Mnemonic Description
1 VOUT Output voltage supply from the demo
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 NC No connect
BACK_UP BATT
J4
R16 R17
1
NC NC
3
5
7
OUTPUT
R20 R21
NC NC
Figure 9. J4 Output Connector
ADP5090
ADP5090
R22
1M
2
PGOOD
4
DIS_SW
6
R23
8
NC
R19
0
EN
A detailed description of each J4 output connector pin is as
follows:
•
The VOUT pin (Pin 1) is the output voltage that the demo
board delivers to the load.
•
The ADP5090
the PGOOD threshold is reached, the
PGOOD pin (Pin 2) high. The pin is connected to the host
MCU GPIO input. See the
information on this function.
•
The GND pin (Pin 3) is the ground connection for the
ADP5090.
•
Connect the DIS_SW pin (Pin 4) to the host MCU GPIO
output. If the host MCU requires the
halt the switching regulator function, set this pin high. See
the ADP5090
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 ADP5090
Populating Resistor R17 and Resistor 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
ADP161 LDO regulator on the
(ADP5090-2-EVALZ). Connect this pin to the host MCU
GPIO output to enable or disable the ADP161.
•
Connect the BACK_UP pin (Pin 7) to the analog input of
the host MCU to monitor the voltage on the supercapacitor
of the ADP5090
Populating Resistor R16 and Resistor R20 creates a resistor
divider for cases where the MCU analog input range is
lower than the supercapacitor voltage.
•
The NC pin (Pin 8) is the no connect pin. Do not use this pin.
Rev. A | Page 5 of 9
has a programmable PGOOD signal. When
ADP5090
ADP5090 data sheet for more
ADP5090
data sheet for more detailed information on
demo board (ADP5090-2-EVALZ).
ADP5090 demo board
demo board (ADP5090-2-EVALZ).
UG-782
sets the
to temporarily