LTC2928CG#TRPBF datasheet, PDF

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LTC2928CG#TRPBF: DescriptionIC PWR SUPPLY SEQUENCER 36SSOP; CategoryPower/power management The power supply circuit; File Size412KB，34 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC2928CG#TRPBF Overview

IC PWR SUPPLY SEQUENCER 36SSOP

LTC2928CG#TRPBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	SSOP
package instruction	SSOP, SSOP36,.3
Contacts	24
Manufacturer packaging code	G
Reach Compliance Code	compliant
ECCN code	EAR99
Adjustable threshold	YES
Analog Integrated Circuits - Other Types	POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 code	R-PDSO-G36
JESD-609 code	e3
length	12.8 mm
Humidity sensitivity level	1
Number of channels	4
Number of functions	1
Number of terminals	36
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	SSOP
Encapsulate equivalent code	SSOP36,.3
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
power supply	3.3 V
Certification status	Not Qualified
Maximum seat height	2 mm
Maximum supply voltage (Vsup)	6 V
Minimum supply voltage (Vsup)	2.9 V
Nominal supply voltage (Vsup)	3.3 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	5.3 mm

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FeaTures

LTC2928

Multichannel Power Supply

Sequencer and Supervisor

DescripTion

The

LTC

2928

is a four channel cascadable power

supply sequencer and high accuracy supervisor. Sequenc-

ing thresholds, order and timing are configured with just a

few external components, negating the need for PC board

layout or software changes during system development.

Multiple LTC2928s may be easily connected to sequence

an unlimited number of power supplies.

Sequence outputs control supply enable pins or

N-channel pass gates. Precision input comparators with

individual outputs monitor power supply voltages to 1.5%

accuracy. Supervisory functions include undervoltage

and overvoltage monitoring and reporting as well as

µP

reset generation.

RST

may be forced high to complement

margin testing.

Application faults, whether internally or externally gener-

ated, can shut down all controlled supplies. The type and

source of faults are reported for diagnosis. Individual

channel controls are available to independently exercise

enable outputs and supervisory functions.

A high voltage input allows the LTC2928 to be powered

from voltages as high as 16.5V. A buffered reference

output permits single negative power supply sequencing

and monitoring operations.

Easily Configure Power Management

without Software

Controls Up to Four Supplies per Device

Cascades for Additional Supplies

Staged Supply Sequencing with

Adjustable Time Positions

Fault Event Reporting with Diagnostics

Selectable System Shutdown on Fault

1.5% Undervoltage Monitor Accuracy

Overvoltage and/or Fault Indication

Configurable Undervoltage and

Overvoltage Thresholds

Charge Pumped Enable Pins Drive N-Channel MOS-

FETs

Operates from 2.9V to 16.5V

5mm

7mm 38-lead QFN and

36-lead SSOP Packages

Network/Telecom Infrastructure

Sequencing for Multiple I/O and Core Voltages

Power Management

applicaTions

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 4843302, 6949965.

Typical applicaTion

12V

LTM4600

OUT

RUN

10k

LTC3414

OUT

3.3V

1.2V

LTC1628

OUT

RUN

AUSTIN LYNX

OUT

AXA010AY93

0.1µF

95.3k

24.3k

9.53k

1.5k

3.4k

RUN

2.5V

Sequencing Up and Down

3.3V

2.5V

1.8V

1.2V

Si7894ADP

1.8V

12.1k

23.2k

36.5k

51.1k

1V/DIV

100

EN2

EN1 EN4

EN3

1µF

RT1

RT2

RT3

RT4

DONE

GND MS1 VSEL

LTC2928

RST

FLT

RTMR PTMR STMR

0.047µF

3300pF

10k

DONE

SYSTEM

RESET

FAULT

START

SEQUENCE SEQUENCE UP

START

UP COMPLETE

SEQUENCE

DOWN

SEQUENCE

DOWN

COMPLETE

2928 TA07

ALL RESISTORS 1%

2928 TA06

2928fa

For more information

www.linear.com/LTC2928

LTC2928CG#TRPBF Related Products

	LTC2928CG#TRPBF	LTC2928CUHF#TRPBF	LTC2928IUHF#TRPBF	LTC2928IG#TRPBF	LTC2928CG#PBF	LTC2928CUHF#PBF	LTC2928IG#PBF	LTC2928IUHF#PBF
Description	IC PWR SUPPLY SEQUENCER 36SSOP	IC PWR SUPPLY SEQUENCER 38-QFN	IC PWR SUPPLY SEQUENCER 38-QFN	IC PWR SUPPLY SEQUENCER 36SSOP	IC PWR SUPPLY SEQUENCER 36SSOP	IC PWR SUPPLY SEQUENCER 38-QFN	IC PWR SUPPLY SEQUENCER 36SSOP	Number of monitored groups: 4 Type of power management chip: Sequencer Active reset level: Active low Output type: - Reset threshold voltage: Adjustable/selectable
Brand Name	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	conform to	conform to	conform to	conform to	conform to	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	SSOP	QFN	QFN	SSOP	SSOP	QFN	SSOP	QFN
package instruction	SSOP, SSOP36,.3	HVQCCN, LCC38,.2X.28,20	HVQCCN, LCC38,.2X.28,20	SSOP, SSOP36,.3	SSOP, SSOP36,.3	HVQCCN, LCC38,.2X.28,20	SSOP, SSOP36,.3	HVQCCN, LCC38,.2X.28,20
Contacts	24	38	38	24	24	38	24	38
Manufacturer packaging code	G	UHF	UHF	G	G	UHF	G	UHF
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Adjustable threshold	YES	YES	YES	YES	YES	YES	YES	YES
Analog Integrated Circuits - Other Types	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 code	R-PDSO-G36	R-PQCC-N38	R-PQCC-N38	R-PDSO-G36	R-PDSO-G36	R-PQCC-N38	R-PDSO-G36	R-PQCC-N38
JESD-609 code	e3	e3	e3	e3	e3	e3	e3	e3
length	12.8 mm	7 mm	7 mm	12.8 mm	12.8 mm	7 mm	12.8 mm	7 mm
Humidity sensitivity level	1	1	1	1	1	1	1	1
Number of channels	4	4	4	4	4	4	4	4
Number of functions	1	1	1	1	1	1	1	1
Number of terminals	36	38	38	36	36	38	36	38
Maximum operating temperature	70 °C	70 °C	85 °C	85 °C	70 °C	70 °C	85 °C	85 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SSOP	HVQCCN	HVQCCN	SSOP	SSOP	HVQCCN	SSOP	HVQCCN
Encapsulate equivalent code	SSOP36,.3	LCC38,.2X.28,20	LCC38,.2X.28,20	SSOP36,.3	SSOP36,.3	LCC38,.2X.28,20	SSOP36,.3	LCC38,.2X.28,20
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	260	260	260	260	260	260	260	260
power supply	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	2 mm	0.8 mm	0.8 mm	2 mm	2 mm	0.8 mm	2 mm	0.8 mm
Maximum supply voltage (Vsup)	6 V	6 V	6 V	6 V	6 V	6 V	6 V	6 V
Minimum supply voltage (Vsup)	2.9 V	2.9 V	2.9 V	2.9 V	2.9 V	2.9 V	2.9 V	2.9 V
Nominal supply voltage (Vsup)	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
surface mount	YES	YES	YES	YES	YES	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL	INDUSTRIAL	INDUSTRIAL	COMMERCIAL	COMMERCIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	GULL WING	NO LEAD	NO LEAD	GULL WING	GULL WING	NO LEAD	GULL WING	NO LEAD
Terminal pitch	0.65 mm	0.5 mm	0.5 mm	0.65 mm	0.65 mm	0.5 mm	0.65 mm	0.5 mm
Terminal location	DUAL	QUAD	QUAD	DUAL	DUAL	QUAD	DUAL	QUAD
Maximum time at peak reflow temperature	30	30	30	30	30	30	30	30
width	5.3 mm	5 mm	5 mm	5.3 mm	5.3 mm	5 mm	5.3 mm	5 mm

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