LTC4240IGN Linear Technology, LTC4240IGN Datasheet - Page 14

• Manufacturer Part Number: LTC4240IGN
• Description: IC CTRLR HOT SWAP CPCI 28-SSOP
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LTC4240IGN

• Applications: CompactPCI™
• Internal Switch(s): No
• Voltage - Supply: 3.3V, 5V, ±12V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP (0.150", 3.95mm Width)
• Family Name: LTC4240
• Package Type: SSOP N
• Operating Supply Voltage (min): 2.55/4.45/10.8/-10.5V
• Operating Supply Voltage (max): 5/12/14/-14V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 3.99mm
• Product Height (mm): 1.5mm
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

APPLICATIO S I FOR ATIO
LTC4240
Table 2. Command Byte Definitions
C7
C6
C5
C4
C3
C2
C1
C0
14
SDA
SCL
START
1
0
HIGH
Don’t care
Don’t care
Ignore V
Ignore 12V
Sets RESETOUT
Turns OFF/ON to OFF
Overrides OFF/ON pin
Turns on LED open drain
Don’t care
RESETOUT
2
1
U
C1 TURNS ON THE EXTERNAL STATUS
LED INDEPENDENT OF RESETOUT.
EEOUT
ADDR 4
C1
3
OUT
U
ADDRESS BYTE
faults
faults
ADDR 3
4
ADDR 2
W
5
LED
Figure 2. Send Byte Command Latch and Logic
ADDR 1
6
ADDR 0
7
U
Figure 1. Send Byte Protocol
OFF/ON
C2 PULLS DOWN THE GATE OF THE
EXTERNAL N-CHANNEL SWITCHES. IT
ALSO TURNS OFF THE 12V
INTERNAL POWER SWITCHES.
C2
R/WR=0
LOW
Don’t care
Don’t care
Don’t ignore V
Don’t ignore 12V
Does not set RESETOUT low
Does not set OFF/ON
Does not override OFF/ON pin
Does not turn on LED open drain
Don’t care
8
ACK
9
IN
XX
EEOUT
AND V
1
OUT
GATE
EEIN
faults
XX
faults
2
C5
3
COMMAND BYTE
RESETIN
PWRGD
C3 IS USED TO SET
LOCAL_PCI_RST# (RESETOUT).
C4
4
C3
C3
5
C2
6
RESETOUT
C1
7
4240 F02
POWER-UP STATE
COMMAND BYTE
XX
8
LOW
LOW
LOW
LOW
LOW
N/A
N/A
N/A
LATCH
ACK
9
STOP
4240 F01
4240f