LTC4245CUHF#PBF Linear Technology, LTC4245CUHF#PBF Datasheet - Page 32

• Manufacturer Part Number: LTC4245CUHF#PBF
• Description: IC CNTRLR HOT SWAP 38-QFN
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LTC4245CUHF#PBF

• Applications: CompactPCI™
• Internal Switch(s): No
• Voltage - Supply: 3.3V, 5V, 12V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 38-WFQFN, Exposed Pad
• Family Name: LTC4245
• Package Type: QFN EP
• Operating Supply Voltage (min): 2.25/4.25/10.2/-10.2V
• Operating Supply Voltage (max): 0/10/20/-20V
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Product Depth (mm): 5mm
• Product Length (mm): 7mm
• Mounting: Surface Mount
• Pin Count: 38
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

APPLICATIO S I FOR ATIO
LTC4245
Table 11. FAULT1 Register E (04h) – Read/Write
Table 12. FAULT2 Register F (05h) – Read/Write
Table 13. GPIO Register G (06h) – Read/Write (GPIO2, GPIO3 Bits Apply Only to the UHF Package)
32
BIT
E7
E6
E5
E4
E3
E2
E1
E0
BIT
F7
F6
F5
F4
F3
F2
F1
F0
BIT
G7:6
G5
G4
G3
G2
G1
G0
NAME
–12V Overcurrent Fault Occurred
3.3V Overcurrent Fault Occurred
5V Overcurrent Fault Occurred
12V Overcurrent Fault Occurred
–12V Undervoltage Fault Occurred
3.3V Undervoltage Fault Occurred
5V Undervoltage Fault Occurred
12V Undervoltage Fault Occurred
NAME
GPIO1 Changed State
BD_SEL# Changed State
FET Short Fault Occurred
PGI Fault Occurred
–12V Power Bad Fault Occurred
3.3V Power Bad Fault Occurred
5V Power Bad Fault Occurred
12V Power Bad Fault Occurred
NAME
GPIO Select
GPIO3 Output
GPIO2 Output
GPIO1 Output
GPIO3 Input
GPIO2 Input
GPIO1 Input
U
U
W
OPERATION
Indicates Overcurrent Fault Occurred on –12V Supply
1 = Overcurrent Fault Occurred, 0 = No Overcurrent Faults
Indicates Overcurrent Fault Occurred on 3.3V Supply
1 = Overcurrent Fault Occurred, 0 = No Overcurrent Faults
Indicates Overcurrent Fault Occurred on 5V Supply
1 = Overcurrent Fault Occurred, 0 = No Overcurrent Faults
Indicates Overcurrent Fault Occurred on 12V Supply
1 = Overcurrent Fault Occurred, 0 = No Overcurrent Faults
Indicates –12V Supply Undervoltage Fault Occurred When V
1 = V
Indicates 3.3V Supply Undervoltage Fault Occurred When 3V
1 = 3V
Indicates 5V Supply Undervoltage Fault Occurred When 5V
1 = 5V
Indicates 12V Supply Undervoltage Fault Occurred When 12V
1 = 12V
OPERATION
Indicates that GPIO1 Pin Changed State; 1 = GPIO1 Changed State, 0 = GPIO1 Unchanged
Indicates that BD_SEL# Pin Changed State; 1 = BD_SEL# Changed State, 0 = BD_SEL# Unchanged
Indicates Potential FET Short was Detected on at Least One Supply, When ADC Measured Current
Sense Voltage Exceeded 7 LSB While FET was Off; 1 = FET was Shorted, 0 = FET is Good
Indicates PGI Fault Occurred; 1 = PGI Fault Occurred, 0 = No PGI faults
Indicates –12V Power was Bad When V
1 = V
Indicates 3.3V Power was Bad When 3V
1 = 3V
Indicates 5V Power was Bad When 5V
1 = 5V
Indicates 12V Power was Bad When 12V
1 = 12V
OPERATION
Control Which GPIO Pin is Multiplexed to the GPIO Channel of ADC
GPIO3 Pin Open-Drain Output State; 1 = High Impedance (Default), 0 = Pulls Low
GPIO2 Pin Open-Drain Output State; 1 = High Impedance (Default), 0 = Pulls Low
GPIO1 Pin Open-Drain Output State; 1 = High Impedance (Default), 0 = Pulls Low
State of the GPIO3 Pin, Read Only Bit; 1 = GPIO3 High, 0 = GPIO3 Low
State of the GPIO2 Pin, Read Only Bit; 1 = GPIO2 High, 0 = GPIO2 Low
State of the GPIO1 Pin, Read Only Bit; 1 = GPIO1 High, 0 = GPIO1 Low
G7
0
0
1
1
EEIN
EEOUT
U
IN
IN
OUT
OUT
IN
OUT
was Low, 0 = No Undervoltage Faults
was Low, 0 = No Undervoltage Faults
G6
was High, 0 = No Undervoltage Faults
0
1
0
1
was Low, 0 = No Undervoltage Faults
was Low, 0 = No Power Bad Faults
was Low, 0 = No Power Bad Faults
was High, 0 = No Power Bad Faults
was Low, 0 = No Power Bad Faults
GPIO1 (Default)
GPIO1
GPIO2
GPIO3
GPIO
OUT
EEOUT
OUT
OUT
Went Low
Went Low
Went Low
Went High
IN
EEIN
IN
Went Low
IN
Went Low
Went Low
Went High
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