ADP1052ACPZ-R7 datasheet(70/113 Pages) AD

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ADP1052

Data Sheet

Rev. B | Page 70 of 113

OT_FAULT_LIMIT

The OT_FAULT_LIMIT command sets the threshold value (in °C) for overtemperature protection. The range is 0°C to 156°C. If the

setting value is out of range, the limit is 156 and the return value is 156.

Table 46. Register 0x4F—OT_FAULT_LIMIT

Bits

Bit Name/Function

R/W

Description

[15:11]

Exponent

5-bit, twos complement, N value for linear format X = Y × 2N. N is fixed at 0.

[10:8]

Mantissa high bits

Mantissa high bits Y[10:8] value fixed at 0.

[7:0]

Mantissa low bits

R/W

Mantissa low bits Y[7:0] value for linear format X = Y × 2N.

OT_FAULT_RESPONSE

Table 47. Register 0x50—OT_FAULT_RESPONSE

Bits

Bit Name/Function

R/W

Description

[7:6]

Response

R/W

00 = continues operation without interruption.

01 = continues operation for the Delay Time 1 specified by Bits[2:0] and the delay time unit

specified for that particular fault. If the fault condition is still present at the end of the delay time, the

unit responds as programmed in the retry setting (Bits[5:3]).

10 = shuts down (disables the output) and responds according to the retry setting in Bits[5:3].

11 = the output is disabled while the fault is present. Operation resumes and the output is enabled

when the fault condition no longer exists.

[5:3]

Retry setting

R/W

000 = restart not attempted. The output remains disabled until the fault is cleared.

001 to 110 = attempts to restart the number of times set by these bits. If the device fails to restart

in the allowed number of retries, it disables the output and remains off until the fault is cleared.

The time between the start of each attempt to restart is set by the Delay Time 2 value in Bits[2:0],

together with the delay time unit specified for that particular fault.

111 = attempts to restart continuously, without limitation, until commanded off (by the CTRL pin or

the OPERATION command, or both), VDD is removed, or another fault condition causes the unit to

shut down.

[2:0]

Delay time

R/W

These bits set the delay time.

Bit 2

Bit 1

Bit 0

Delay Time 1 (sec)

Delay Time 2 (ms)

252

588

924

1260

1596

1932

2268

2604

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