Dialog Semiconductor DA9070 Manuale d'uso - Pagina 14

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UM-PM-039
DA9070 / DA9231 Fuel Gauge Development Kit

DA9231 Evaluation

The typical application diagram of DA9231 is shown in
DA9231 includes a Buck regulator and an LDO. On the DA9070 Fuel gauge EVK, both the Buck and
LDO regulators can be evaluated individually. It is recommended to follow the operation conditions
as shown in
Table 4
to avoid any damage to the EVK board. For test and measurement set-up,
please refer to
Table 5
for descriptions of connectors on the EVK board.
1 µF
LDO Vin
1 µF
HOST

Recommended Operating Conditions

Table 4: Recommended Operation Conditions

Parameter
VDD
VDD_SYS
VDD_LDO
I_BUCK
I_LDO
User Manual
Buck Vin
VDD
VDD_SYS
VDD_LDO
SW
PGND
DA9231
VBUCK_SNS
SDA
SCL
GPO
VLDO
IC_EN
GND

Figure 8: DA9231 Typical Application Diagram

Description
Analog Input
Power Input
LDO mode
Load Switch mode
Buck Output Current
LDO Output Current
Revision 2.1
14 of 18
Figure 8.
4.7 µF
Buck Vout
2.2 µH
10 µF
LDO Vout
Sensors
2.2 µF
Conditions
Min
VDD= VDD_SYS
2.5
VDD= VDD_SYS
2.5
1.8
0.8
NDA Confidential
MCU/
System I/O
Typ
Max
Unit
5.5
V
5.5
V
5.5
V
5.5
V
300
mA
100
mA
28-Oct-2018
© 2018 Dialog Semiconductor