EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC4244CGN#PBF

Description
Rugged, CompactPCI Bus Hot Swap Controllers
CategoryPower/power management    The power supply circuit   
File Size372KB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Parametric View All

LTC4244CGN#PBF Overview

Rugged, CompactPCI Bus Hot Swap Controllers

LTC4244CGN#PBF Parametric

Parameter NameAttribute value
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?conform to
MakerADI
package instructionSSOP,
Contacts20
Manufacturer packaging code05-08-1641 (GN20)
Reach Compliance Codecompliant
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G20
JESD-609 codee3
length8.649 mm
Humidity sensitivity level1
Number of channels4
Number of functions1
Number of terminals20
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.75 mm
Nominal supply voltage (Vsup)12 V
surface mountYES
Temperature levelCOMMERCIAL
Terminal surfaceMATTE TIN
Terminal formGULL WING
Terminal pitch0.635 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.899 mm
LTC4244/LTC4244-1
Rugged, CompactPCI Bus
Hot Swap Controllers
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
Controls –12V, 3.3V, 5V and 12V Supplies
±14.4V
Absolute Maximum Rating for 12V
IN
and –12V
IN
Input Pins
Insensitive to Supply Voltage Transients
Adjustable Foldback Current Limit with Circuit Breaker
LOCAL_PCI_RST# Logic On-Chip
PRECHARGE Output Biases I/O Pins During Card
Insertion and Extraction
LTC4244-1 Designed for Applications without –12V
Available in 20-Lead Narrow SSOP Package
APPLICATIO S
s
Hot Board Insertion into CompactPCI Bus
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
CompactPCI is a trademark of the PCI Industrial Computer Manufacturers Group.
The LTC
®
4244/LTC4244-1 are Hot Swap
TM
controllers that
allow a board to be safely inserted into and removed from
a CompactPCI
TM
bus slot. External N-channel transistors
control the 5V and 3.3V supplies while on-chip switches
control the
±12V
supplies. The 3.3V and 5V supplies can
be ramped up at an adjustable rate. Electronic circuit
breakers protect all four supplies against overcurrent
faults. After the power-up cycle is complete, the TIMER pin
capacitor serves as auxiliary V
CC
allowing the LTC4244/
LTC4244-1 to function without interruption in the pres-
ence of voltage spikes on the 12V
IN
supply. The PWRGD
output indicates when all four supplies are within toler-
ance. The OFF/ON pin is used to cycle board power or reset
the circuit breaker. The PRECHARGE output can be used
to bias the bus I/O pins during card insertion and extrac-
tion. PCI_RST# is combined on-chip with HEALTHY# in
order to generate LOCAL_PCI_RST#.
TYPICAL APPLICATIO
5V
LONG 5V
3.3V
LONG 3.3V
C8
0.01µF PER
POWER PIN
R22
2.7Ω
C9
0.01µF PER
POWER PIN
5V
IN
R2
Q2
0.007Ω IRF7457
3.3V
IN
R21
1.8Ω
C6
0.01µF
C7
0.01µF
Z3
Z4
R1
0.005Ω
Q1
IRF7457
R3
10Ω
Z1
12V
–12V
Z2
3.3V
IN
3.3V
SENSE
GATE 3.3V
OUT
5V
IN
12V
IN
V
EEIN
R19 1k
OFF/ON
R20
1.2k
R18 10k
FAULT
PWRGD
RESETIN
GND PRECHARGE
LTC4244
5V
SENSE
BD_SEL#
LONG V(I/O)
R17
10k
HEALTHY#
PCI_RST#
R15
1Ω
C4
0.01µF
GROUND
I/O DATA LINE 1
R13
10Ω
R16
1Ω
C5
0.01µF
TIMER
DRIVE RESETOUT
C3 4.7nF
R9 24Ω
R8 1k
LOCAL_PCI_RST#
R10 18Ω
R11
10k
R12
10k
I/O PIN 1
I/O PIN 128
1V
±10%
Q3
R7 12Ω
MMBT2222A
I/O DATA LINE 128
Z1, Z2: SMAJ12A
Z3, Z4: SMAJ5.0A
R14
10Ω
Figure 1. Typical Compact PCI Application
42441f
+
U
+
C
LOAD(5VOUT)
V
OUT
5V
5A
V
OUT
3.3V
7A
U
U
+
C
LOAD(3.3VOUT)
R4
10Ω
C1
R5 0.33µF
1k
5V
OUT
12V
OUT
+
C
LOAD(12VOUT)
V
OUT
12V
500mA
V
EEOUT
–12V
100mA
V
EEOUT
C
LOAD(VEEOUT)
C2
0.082µF
R6
10k
V
OUT
3.3V
V
IN
3.3V
RESET#
I/O #1
PCI
BRIDGE
I/O #128 CHIP
4244 F01
1
Add comment template in Keil
[i=s]This post was last edited by nwnuxiang on 2015-2-3 13:55[/i] [size=3][color=#000000][b]Add comment template in Keil[/b][/color][/size][color=#000][font=Arial] In program development, we need to s...
nwnuxiang 51mcu
Computer graphics programming.
Computer Graphics eBooks...
xtss Embedded System
The ADC of 28335 takes a long time to collect data.
ADC uses epwm to control ADC startup. The system frequency is 150MHz, period is 3750, the number of sampling points is 3000, and the total sampling time should be 0.6ms. However, the program that I ru...
caijianfa55 Microcontroller MCU
Solar Photovoltaic Application 2
[i=s]This post was last edited by Zhang Yi 2018 on 2018-10-12 15:43[/i] [b][color=#5E7384]This content was originally created by EEWORLD forum netizen [size=3]Zhang Yi 2018[/size]. If you need to repr...
张毅2018 Energy Infrastructure?
Cypress microcontrollers integrate programmable analog circuits (Figure
Cypress microcontrollers integrate programmable analog circuits (Figure)  Cypress MicroSystems of the United States recently launched a new product of the "PSoC" series LSI "CY8C27", which integrates ...
fighting Analog electronics
Newbit in four colors
This time, the newbit has four colors, which looks more interesting.[b][color=#5E7384]This content is created by EEWORLD forum user [size=3]dcexpert[/size], if you want to reprint or use it for commer...
dcexpert MicroPython Open Source section

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 204  2241  2226  2851  386  5  46  45  58  8 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号