Load switch configuration

The load switches can be connected to the BUCK regulators and to the controllable active load circuit on the EK.

Load switch input configuration

The following figure shows how the load switch inputs are connected to VOUT1 and VOUT2 with jumpers on P15.

Figure 1. Load switch input configuration

nPM1304 EK load switch input configuration

The following table shows the configuration for the load switch inputs.

Table 1. Configurations for connecting load switch input
PMIC pin	Connected net	Connecting jumper pins	Comment
LSIN1/VINLDO1	VOUT1	P15 pin 3 to pin 4	Denoted as 1 on the EK
LSIN2/VINLDO2	VOUT2	P15 pin 1 to pin 2	Denoted as 2 on the EK

Load switch output configuration

The load switch outputs can be connected to the controllable active load on the EK. Use a jumper on P20 to select LSOUT1 or LSOUT2 as a source for the controllable active load.

The following figure and table show the nPM1304 load switch output configuration.

Figure 2. Load switch output configuration

nPM1304 EK load switch output configuration

Table 2. Configurations for connecting load switch output
Jumper connection		Comment
LS_OUT	LS_LDO_OUT1	Load switch output LSOUT1 on PMIC. Denoted as 1 on the EK.
LS_OUT	LS_LDO_OUT2	Load switch output LSOUT2 on PMIC. Denoted as 2 on the EK.

Note: When configuring nPM1304 for load switch operation, disconnect the Low-Dropout Regulator (LDO) bypass capacitor by removing the jumper on P16.