LTC4261/LTC4261-2

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Table 6. CONTROL Register D (03h)—Read/Write

BIT

NAME

OPERATION

D7:6

PGIO Configure

Configures Behavior of PGIO Pin

FUNCTION

D6

D7

PGIO PIN

Power Good (Default)

0

0

Open Drain

Power Good

0

1

Open Drain

General Purpose Output

1

0

PGIO = C6

General Purpose Input

1

1

PGIO = Hi-Z

D5

Test Mode Enable

Test Mode Halts ADC Operation and Enables Writes to ADC Registers; 1 = Enable Test Mode, 0 = Disable Test Mode (Default)

D4

Power Bad

Auto-Retry

Enables Auto-Retry After a Power Bad Fault; 1 = Retry Enabled, 0 = Retry Disabled (Default)

D3

FET On Control

Turns FET On and Off; 1 = Turn FET On, 0 = Turn FET Off. Defaults to ON Pin State at End of Start-Up Debounce Delay

D2

Overcurrent

Auto-Retry

Enables Auto-Retry After an Overcurrent Fault; 1 = Retry Enabled (Default, LTC4261-2),

0 = Retry Disabled (Default, LTC4261)

D1

Undervoltage

Auto-Retry

Enables Auto-Retry After an Undervoltage Fault; 1 = Retry Enabled (Default), 0 = Retry Disabled

D0

Overvoltage

Auto-Retry

Enables Auto-Retry After an Overvoltage Fault; 1 = Retry Enabled (Default), 0 = Retry Disabled

Table 7. SENSE Registers E (04h) and F (O5h)—Read/Write

BIT

NAME

OPERATION

E7:0, F7:6

SENSE Voltage Data

10-Bit Data of Current Sense Voltage with 62.5µV LSB and 64mV Full Scale

F5:0

Reserved

Always Returns 0, Not Writable

Table 8. ADIN2/OV Registers G (06h) and H (O7h)—Read/Write

BIT

NAME

OPERATION

G7:0, H7:6

ADIN2/OV Voltage Data 10-Bit Data of ADIN2/OV (SSOP/QFN) Voltage with 2.5mV LSB and 2.56V Full Scale

H5:0

Reserved

Always Returns 0, Not Writable

Table 9. ADIN Registers I (08h) and J (O9h)—Read/Write

BIT

NAME

OPERATION

I7:0, J7:6

ADIN Voltage Data

10-Bit Data of ADIN Voltage with 2.5mV LSB and 2.56V Full Scale

J5:0

Reserved

Always Returns 0, Not Writable

Table 10. ADC Channel Labeling for Single-Wire Broadcast Mode

CH1

CH0

ADC CHANNEL

0

0

SENSE Voltage

0

1

ADIN2/OV (SSOP/QFN) Voltage

1

0

ADIN Voltage

APPLICATIONS INFORMATION