LTC1644CGN datasheet, PDF - EEWORLD Datasheet

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LTC1644CGN: DescriptionCompactPCI Bus Hot Swap Controller; CategoryPower/power management The power supply circuit; File Size437KB，24 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC1644CGN Overview

CompactPCI Bus Hot Swap Controller

LTC1644CGN Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Maker	Linear ( ADI )
Parts packaging code	SSOP
package instruction	SSOP, SSOP20,.25
Contacts	20
Manufacturer packaging code	GN
Reach Compliance Code	not_compliant
ECCN code	EAR99
Other features	IT ALSO REQUIRES A -12V SUPPLY
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G20
JESD-609 code	e0
length	8.65 mm
Humidity sensitivity level	1
Nominal Negative Supply Voltage (Vsup)	-12 V
Number of channels	4
Number of functions	1
Number of terminals	20
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	SSOP
Encapsulate equivalent code	SSOP20,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235
power supply	+-12 V
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply current (Isup)	8 mA
Maximum supply voltage (Vsup)	12.6 V
Minimum supply voltage (Vsup)	11.4 V
Nominal supply voltage (Vsup)	12 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.635 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	3.9116 mm

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FEATURES

LTC1644

CompactPCI Bus

Hot Swap Controller

DESCRIPTIO

The LTC

1644 is a Hot Swap

controller that allows a board

to be safely inserted and removed from a CompactPCI bus

slot. External N-channel transistors control the 3.3V/5V

supplies, while on-chip switches control the

–12V and 12V supplies. The 3.3V and 5V supplies can be

ramped up at a programmable rate. Electronic circuit break-

ers protect all four supplies against overcurrent faults. The

PWRGD output indicates when all of the supply voltages are

within tolerance. The OFF/ON pin is used to cycle the board

power or reset the circuit breaker. The PRECHARGE output

can be used to bias the bus I/O pins during card insertion

and extraction. PCI_RST# is combined on-chip with

HEALTHY# in order to generate LOCAL_PCI_RST#.

, 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.

Allows Safe Board Insertion and Removal from a

Live, CompactPCI

Bus

Controls –12V, 3.3V, 5V and 12V Supplies

Adjustable Foldback Current Limit with Circuit

Breaker

Dual-Level Circuit Breakers Protect 5V and 3.3V

Supplies from Overcurrent and Short-Circuit Faults

LOCAL_PCI_RST# Logic On-Chip

PRECHARGE Output Biases I/O Pins During Card

Insertion and Extraction

Adjustable Supply Voltage Power-Up Rate

APPLICATIO S

Hot Board Insertion into CompactPCI Bus

TYPICAL APPLICATIO

BACKPLANE

CONNECTOR

LONG 5V

3.3V

PCB EDGE

BACKPLANE

CONNECTOR

0.1µF

PER 10

POWER

PINS

0.1µF

PER 10

POWER

PINS

R22 2.74Ω

R21 1.74Ω

0.005Ω

IRF7413

0.007Ω

LONG 3.3V

0.01µF

10Ω

OUT

SENSE

GATE

SENSE

12V

–12V

R20 1.2k

R19

R18

12V

EEIN

OFF/ON

FAULT

PWRGD

RESETIN

GND

PRECHARGE

R10

18Ω 5%

R11

51k

C3 4.7nF

R12

51k

24Ω

±10%

MMBT2222A

DRIVE

LTC1644

20-PIN SSOP

BD_SEL#

EARLY V(I/O)

R17

HEALTHY#

PCI_RST#

R15

1Ω

0.01µF

GROUND

I/O DATA LINE 1

R16

1Ω

0.01µF

TIMER

0.1µF

OUT

RESETOUT

R8 1k

12Ω

I/O #1

I/O #128

1644 F01

R13 10Ω

RESET#

PCI

BRIDGE

CHIP

I/O PIN 1

I/O PIN 128

I/O DATA LINE 128

Z1, Z2: SMAJ12CA

R14 10Ω

*5V

AND 3V

MAY BE USED AS SOURCES OF EARLY POWER

Z3, Z4: 1PMT5.0AT3

Figure 1

1644f

IRF7413

LOAD(5VOUT)

OUT

5V AT 5.7A

OUT

3.3V AT 8A

10Ω

OUT

12V

OUT

LOAD(3VOUT)

0.047µF

LOAD(12VOUT)

LOAD(VEEOUT)

12V

OUT

12V AT 500mA

EEOUT

–12V AT 100mA

• • •

LTC1644CGN Related Products

	LTC1644CGN	LTC1644	LTC1644IGN
Description	CompactPCI Bus Hot Swap Controller	CompactPCI Bus Hot Swap Controller	CompactPCI Bus Hot Swap Controller
Brand Name	Linear Technology	-	Linear Technology
Is it Rohs certified?	incompatible	-	incompatible
Maker	Linear ( ADI )	-	Linear ( ADI )
Parts packaging code	SSOP	-	SSOP
package instruction	SSOP, SSOP20,.25	-	SSOP, SSOP20,.25
Contacts	20	-	20
Manufacturer packaging code	GN	-	GN
Reach Compliance Code	not_compliant	-	_compli
ECCN code	EAR99	-	EAR99
Other features	IT ALSO REQUIRES A -12V SUPPLY	-	IT ALSO REQUIRES A -12V SUPPLY
Adjustable threshold	NO	-	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT	-	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G20	-	R-PDSO-G20
JESD-609 code	e0	-	e0
length	8.65 mm	-	8.65 mm
Humidity sensitivity level	1	-	1
Nominal Negative Supply Voltage (Vsup)	-12 V	-	-12 V
Number of channels	4	-	4
Number of functions	1	-	1
Number of terminals	20	-	20
Maximum operating temperature	70 °C	-	85 °C
Package body material	PLASTIC/EPOXY	-	PLASTIC/EPOXY
encapsulated code	SSOP	-	SSOP
Encapsulate equivalent code	SSOP20,.25	-	SSOP20,.25
Package shape	RECTANGULAR	-	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH	-	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235	-	235
power supply	+-12 V	-	+-12 V
Certification status	Not Qualified	-	Not Qualified
Maximum seat height	1.75 mm	-	1.75 mm
Maximum supply current (Isup)	8 mA	-	8 mA
Maximum supply voltage (Vsup)	12.6 V	-	12.6 V
Minimum supply voltage (Vsup)	11.4 V	-	11.4 V
Nominal supply voltage (Vsup)	12 V	-	12 V
surface mount	YES	-	YES
technology	CMOS	-	CMOS
Temperature level	COMMERCIAL	-	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)	-	Tin/Lead (Sn/Pb)
Terminal form	GULL WING	-	GULL WING
Terminal pitch	0.635 mm	-	0.635 mm
Terminal location	DUAL	-	DUAL
Maximum time at peak reflow temperature	20	-	20
width	3.9116 mm	-	3.9116 mm

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