ISL8272MEVAL2Z datasheet(38/59 Pages) RENESAS

38 / 59 page

ISL8272M

FN8670 Rev.5.00

Page 38 of 59

Nov 8, 2017

TON_RISE (61h)

Definition: Sets the rise time of VOUT after ENABLE and TON_DELAY. In multi-module current sharing configuration where ASCR is

disabled for start up, the rise time of VOUT can be approximately calculated by Equation 1.

Data Length in Bytes: 2

Data Format: L11

Type: R/W

Default Value: Pin strap setting

Units: ms

Range: 0 to 200ms

TOFF_DELAY (64h)

Definition: Sets the delay time from DISABLE to the start of VOUT fall.

Data Length in Bytes: 2

Data Format: L11

Type: R/W

Default Value: Pin strap setting

Units: ms

Range: 0 to 500ms

TOFF_FALL (65h)

Definition: Sets the soft-off fall time for VOUT after DISABLE and TOFF_DELAY.

Data Length in Bytes: 2

Data Format: L11

Type: R/W

Default Value: Pin strap setting

Units: ms

Range: 0 to 200ms

STATUS_BYTE (78h)

Definition: Returns one byte of information with a summary of the most critical faults.

Data Length in Bytes: 1

Data Format: BIT

Type: Read-only

Default Value: 00h

Units: N/A

BIT NUMBER

STATUS BIT NAME

MEANING

BUSY

A fault was declared because the device was busy and unable to respond.

OFF

This bit is asserted if the unit is not providing power to the output, regardless of

the reason, including simply not being enabled.

VOUT_OV_FAULT

An output overvoltage fault has occurred.

IOUT_OC_FAULT

An output overcurrent fault has occurred.

VIN_UV_FAULT

An input undervoltage fault has occurred.

TEMPERATURE

A temperature fault or warning has occurred.

CML

A communications, memory or logic fault has occurred.

NONE OF THE ABOVE

A fault or warning not listed in Bits 7:1 has occurred.

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