ACT8810
Rev 9, 15-Nov-12
STEP-DOWN DC/DC CONVERTERS
REGISTER DESCRIPTIONS CONT’D
Table 9:
REG2/VSETx[ ] Output Voltage Setting
REG2/VSETx[5:4]
REG2/VSETx[3:0]
REG2/VRANGE[ ] = [0]
REG2/VRANGE[ ] = [1]
00
01
10
11
00
01
10
11
0000
Adjustable 1.025
1.425
1.825 Adjustable 2.050
2.850
3.650
0001
0.800
1.050
1.450
1.850
1.300
2.100
2.900
3.700
0010
0.800
1.075
1.480
1.875
1.350
2.150
2.950
3.750
0011
0.800
1.100
1.500
1.900
1.400
2.200
3.000
3.800
0100
0.800
1.125
1.525
1.925
1.450
2.250
3.050
3.850
0101
0.800
1.150
1.550
1.950
1.500
2.300
3.100
3.900
0110
0.800
1.175
1.575
1.975
1.550
2.350
3.150
3.950
0111
0.800
1.200
1.600
2.000
1.600
2.400
3.200
4.000
1000
0.825
1.225
1.625
2.025
1.650
2.450
3.250
4.050
1001
0.850
1.250
1.650
2.050
1.700
2.500
3.300
4.100
1010
0.875
1.275
1.675
2.075
1.750
2.550
3.350
4.150
1011
0.900
1.300
1.700
2.100
1.800
2.600
3.400
4.200
1100
0.925
1.325
1.725
2.125
1.850
2.650
3.450
4.250
1101
0.950
1.350
1.750
2.150
1.900
2.700
3.500
4.300
1110
0.975
1.375
1.775
2.175
1.950
2.750
3.550
4.350
1111
1.000
1.400
1.800
2.200
2.000
2.800
3.600
4.400
: Care must be taken when adjusting the VRANGE[ ] selection at address 23h bit-6 to avoid undesired output voltage selections. The
VRANGE bit allows selection of the two output voltage ranges available for REG1, REG2 and REG3 (VRANGE = 0 – VOUT range 0.8V
to 2.2V, VRANGE = 1 – VOUT range 1.3V to 4.4V). It is recommended that the user first establishes if the new VOUT voltage is within the
current selected voltage range (selected by VRANGE) prior to changing the value of the VRANGE bit.
: Refer to the Output Voltage Programming section for more information.
Innovative PowerTM
ActivePMUTM and ActivePathTM are trademarks of Active-Semi.
I2CTM is a trademark of NXP.
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