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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 = Retr

y 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 Over

current 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 Over

voltage 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

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