UM-B-114
DA14531 Development Kit Pro Hardware User Manual
User Manual
Revision 1.4
23-Apr-2020
37 of 82
© 2021 Dialog Semiconductor
Table 15: DA14531 DCDC Configuration and Input Voltage
Board
Configuration
Setting
Comments
PRO-MB
J9:1-2
J9:3-4
Enabling the current sensing
circuit of PRO-MB
1.1 V
J5: no jumper
Voltage levels of V
LDO
V
LDO
generates V1 and V3
1.8 V
J5: 1-3
3.0 V
J5: 2-4
3.3 V (Default)
J5: 1-3
J5: 2-4
Boost
J4:1-2
V
BAT_LOW
supplied by V1,
enabling Boost mode
Buck (Default)
J4:3-4
J4:3-4
V
BAT_HIGH
supplied by V3,
enabling Buck mode
Bypass
J4:1-2
V
BAT_HIGH
and V
BAT_LOW
are
supplied from V3 and V1,
respectively, enabling bypass
mode
DA14531 PRO-DB
J1:1-2
J1:4-5
jumpers applied
Buck Mode
SW1: H
Table 16: Jumper Settings for J9
Jumper on J9
Function
Comments
J9: 1-2
J9: 3-4
V
LDO
supplies PRO-DB
Current sensing circuit enabled
See
J9:2-3
V
LDO
supplies PRO-DB
Current sensing circuit is
bypassed
See
J9: 3-4
BT1 supplies PRO-DB
Current sensing circuit enabled
BT1 must be mounted
See
Example:
to provide 3.0 V in buck mode, proceed with the following actions:
1. On DA14531 PRO-MB, apply jumpers to J5:2-4 and J4:3-4.
2. On DA14531 PRO-DB, set SW1 to the H position (buck mode) and apply jumpers to J2:1-2 and
J2:4-5
NOTE
Loss of communication between PC and DA14531 DK PRO may occur when the power configuration
forDA14531 DK PRO is changed. If it happens, power cycle the DA4531 DK PRO.
6.1
Battery Operation
On DA14531 DK PRO, the DA14531 system can be supplied from a 3 V coin cell battery, type
CR2032.
A coin cell battery can be applied to either a PRO-MB or a DA14531 PRO-DB.
