ADP5140WACCZ-R7 datasheet(34/128 Pages) AD

34 / 128 page

ADP5140

Data Sheet

Rev. 0 | Page 34 of 128

Table 16. SPI Programmable Options for VOUT1

BUCK1_VOUTSET, Bits[5:0]

VOUT1 (V)

000000

0.8

000001

0.81

000010

0.82

000011

0.83

000100

0.84

000101

0.85

000110

0.86

000111

0.87

001000

0.88

001001

0.89

001010

0.9

001011

0.91

001100

0.92

001101

0.93

001110

0.94

001111

0.95

010000

0.96

010001

0.97

010010

0.98

010011

0.99

010100

010101

1.01

010110

1.02

010111

1.03

011000

1.04

011001

1.05

011010

1.06

011011

1.07

011100

1.08

011101

1.09

011110

1.1

011111

1.11

100000

1.12

100001

1.13

100010

1.14

100011

1.15

100100

1.16

100101

1.17

100110

1.18

100111

1.19

101000

1.2

101001

1.21

101010

1.22

101011

1.23

101100

1.24

101101

1.25

101110

1.26

101111

1.27

110000

1.28

110001

1.29

110010

1.3

110011

1.31

110100

1.32

110101

1.33

110110

1.34

110111

1.35

111000

1.36

111001

1.37

111010

1.38

111011

1.39

111100

1.4

Table 17. SPI Programmable Options for VOUT4

BUCK4_VOUTSET, Bits[3:0]

VOUT4 (V)

0000

0.55

0001

0.60

0010

0.65

0011

0.70

0100

0.75

0101

0.80

0110

0.85

0111

0.90

1000

0.95

1001

1.00

1010

1.05

1011

1.10

1100

1.15

1101

1.20

VOUT2 is programmed by an external resistor divider, as shown

in Figure 77.

VOUT2

RTOP2

RBOT2

FB2

GND

Figure 77. Output Voltage Setting for BUCK2

Use the following equation to set VOUT2:

VOUT2 = 0.8 ×(1 + (RTOP2/RBOT2))

where:

RTOP2 is the top resistor of the resistor divider of BUCK2.

RBOT2 is the bottom resistor of the resistor divider of BUCK2.

Ensure that the RBOT2 resistor value is less than 20 kΩ.

VOUT3 is programmed by an external resistor divider, as shown

in Figure 78.

VOUT3

RTOP3

RBOT3

FB3

GND

Figure 78. Output Voltage Setting for BUCK3

Use the following equation to set VOUT3:

VOUT3 = 0.8 ×(1 + (RTOP3/RBOT3))

where:

RTOP3 is the top resistor of the resistor divider of BUCK3.

RBOT3 is the bottom resistor of the resistor divider of BUCK3.

Ensure that the RBOT3 resistor value is less than 20 kΩ.

Output DVS Function

BUCK1 and BUCK4 support the dynamic voltage scaling

(DVS) function, as shown in Figure 79. The output voltage can

be programmed in real time and the interval during the transition

is programmable through the SPI, as shown in Table 18. The

ADP5140WACCZ-R7 数据表(PDF) 34 Page - Analog Devices

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