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Rainbow Electronics MAX5970 User Manual

Page 24

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0V to 16V, Dual Hot-Swap Controller with 10-Bit

Current and Voltage Monitor and 4 LED Drivers

MAX5970

24 _____________________________________________________________________________________

Table 21. Undervoltage Warning Threshold Register Format (High-Order Bits)

Table 22. Undervoltage Warning Threshold Register Format (Low-Order Bits)

Table 23. Undervoltage Critical Threshold Register Format (High-Order Bits)

Table 24. Undervoltage Critical Threshold Register Format (Low-Order Bits)

Digital Undervoltage and

Overvoltage Detection Thresholds

The most recent voltage values are continuously com-
pared to four programmable limits, comprising two

undervoltage (UV) levels (see Tables 21–24) and two
overvoltage (OV) levels (see Tables 25–28).

Description:

Undervoltage warning threshold high-order bits [9:2]

Register Title:

uv1th_ch0_msb

uv1th_ch1_msb

Register Addresses:

0xA1

0x1E

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

RESET

VALUE

uv1_9

uv1_8

uv1_7

uv1_6

uv1_5

uv1_4

uv1_3

uv1_2

0x00

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

Description:

Undervoltage warning threshold low-order bits [1:0]

Register Titles:

uv1th_ch0_Isb

uv1th_ch1_lsb

Register Addresses:

0x1B

0x1F

R

R

R

R

R

R

R/W

R/W

RESET

VALUE

uv1_1

uv1_0

0x00

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

Description:

Undervoltage critical threshold high-order bits [9:2]

Register Title:

uv2th_ch0_msb

uv2th_ch1_msb

Register Addresses:

0x1C

0x26

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

RESET

VALUE

uv2_9

uv2_8

uv2_7

uv2_6

uv2_5

uv2_4

uv2_3

uv2_2

0x00

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

Description:

Undervoltage critical threshold low-order bits [1:0]

Register Title:

uv2th_ch0_lsb

uv2th_ch1_lsb

Register Addresses:

0x1D

0x27

R

R

R

R

R

R

R/W

R/W

RESET

VALUE

uv2_1

uv2_0

0x00

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0