LT1424IN8-9#PBF datasheet, PDF

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LT1424IN8-9#PBF: DescriptionIC REG FLYBACK INV ISO 9V 8DIP; CategoryPower/power management The power supply circuit; File Size188KB，16 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LT1424IN8-9#PBF Overview

IC REG FLYBACK INV ISO 9V 8DIP

LT1424IN8-9#PBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	DIP
package instruction	DIP,
Contacts	8
Manufacturer packaging code	N
Reach Compliance Code	compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	18 V
Minimum input voltage	3.1 V
Nominal input voltage	5 V
JESD-30 code	R-PDIP-T8
JESD-609 code	e3
Humidity sensitivity level	1
Number of functions	1
Number of terminals	8
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Maximum output current	1.9 A
Package body material	PLASTIC/EPOXY
encapsulated code	DIP
Package shape	RECTANGULAR
Package form	IN-LINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Maximum seat height	3.937 mm
surface mount	NO
Switch configuration	BOOST
Maximum switching frequency	320 kHz
Temperature level	AUTOMOTIVE
Terminal surface	Matte Tin (Sn)
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	7.62 mm

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LT1424-9

Isolated Flyback

Switching Regulator

with 9V Output

FEATURES

DESCRIPTIO

No Transformer “Third Winding” or Optoisolator

Required

Application Circuit Meets PCMCIA Type II

Height Requirement

Fixed, Application Specific 9V Output Voltage

Regulation Maintained Well into Discontinuous

Mode (Light Load)

Load Compensation Provides Excellent

Load Regulation

Available in 8-Pin PDIP and SO Packages

Operating Frequency: 285kHz

The LT

1424-9 is a monolithic high power switching

regulator specifically designed for the isolated flyback

topology. No “third winding” or optoisolator is required;

the integrated circuit senses the isolated output voltage

directly from the primary side flyback waveform. A high

current, high efficiency switch is included on the die along

with all oscillator, control and protection circuitry.

The LT1424-9 operates with input supply voltages from

3V to 20V and draws only 7mA quiescent current. It can

deliver up to 200mA at 9V with no external power devices.

By utilizing current mode switching techniques, it pro-

vides excellent AC and DC line regulation.

The LT1424-9 has a number of features not found on other

switching regulator ICs. Its unique control circuitry can

maintain regulation well into discontinuous mode. Load

compensation circuitry allows for improved load regula-

tion. An externally activated shutdown mode reduces total

supply current to 20µA typical for standby operation.

, LTC and LT are registered trademarks of Linear Technology Corporation.

APPLICATIO S

Ethernet Isolated 5V to – 9V Converter

TYPICAL APPLICATIO

– 9V PCMCIA Type II Isolated LAN Supply

(2.41mm Maximum Component Height)

ISOLATION

BARRIER

10µF

25V

10µF

25V

0.1µF

LT1424-9

100k

47pF

1000pF

INPUT

COM

SHDN

SYNC

SGND

CCOMP

PGND

0.1µF

1N5248

220pF

MBR0540T4

1:1

75Ω

MBRS130LT3

OUT

COM

1424 TA01

C1, C2, C3, C4: MARCON THCS50E1E106Z CERAMIC

CAPACITOR, SIZE 1812. (847) 696-2000

T1: COILTRONICS CTX02-13483

75Ω

220pF

10µF

25V

10µF

25V

1.8k

–9V

200mA

sn14249 14249fs

LT1424IN8-9#PBF Related Products

	LT1424IN8-9#PBF	LT1424CS8-9#TR	LT1424IS8-9#TR	LT1424CS8-9#TRPBF	LT1424IS8-9#PBF	LT1424IS8-9#TRPBF	LT1424CN8-9#PBF	LT1424CS8-9#PBF
Description	IC REG FLYBACK INV ISO 9V 8DIP	IC reg flyback isolated 9V 8soic	IC reg flyback isolated 9V 8soic	IC REG FLYBACK INV ISO 9V 8SOIC	IC REG FLYBACK INV ISO 9V 8SOIC	IC REG FLYBACK INV ISO 9V 8SOIC	IC REG FLYBACK INV ISO 9V 8DIP	IC REG FLYBACK INV ISO 9V 8SOIC
Brand Name	Linear Technology	-	-	-	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	-	-	-	conform to	conform to	conform to	conform to
Parts packaging code	DIP	-	-	-	SOIC	SOIC	DIP	SOIC
package instruction	DIP,	-	-	-	SOP, SOP8,.25	SOP,	DIP,	SOP,
Contacts	8	-	-	-	8	8	8	8
Manufacturer packaging code	N	-	-	-	S8	S8	N	S8
Reach Compliance Code	compliant	-	-	-	compliant	compliant	compliant	compliant
ECCN code	EAR99	-	-	-	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR	-	-	-	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR
control mode	CURRENT-MODE	-	-	-	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Maximum input voltage	18 V	-	-	-	20 V	20 V	18 V	18 V
Minimum input voltage	3.1 V	-	-	-	3 V	3 V	3.1 V	3.1 V
Nominal input voltage	5 V	-	-	-	5 V	5 V	5 V	5 V
JESD-30 code	R-PDIP-T8	-	-	-	R-PDSO-G8	R-PDSO-G8	R-PDIP-T8	R-PDSO-G8
JESD-609 code	e3	-	-	-	e3	e3	e3	e3
Humidity sensitivity level	1	-	-	-	1	1	1	1
Number of functions	1	-	-	-	1	1	1	1
Number of terminals	8	-	-	-	8	8	8	8
Maximum output current	1.9 A	-	-	-	1.95 A	1.95 A	1.9 A	1.9 A
Package body material	PLASTIC/EPOXY	-	-	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	DIP	-	-	-	SOP	SOP	DIP	SOP
Package shape	RECTANGULAR	-	-	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	IN-LINE	-	-	-	SMALL OUTLINE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED	-	-	-	260	260	NOT SPECIFIED	260
Certification status	Not Qualified	-	-	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	3.937 mm	-	-	-	1.75 mm	1.75 mm	3.937 mm	1.75 mm
surface mount	NO	-	-	-	YES	YES	NO	YES
Switch configuration	BOOST	-	-	-	BOOST	BOOST	BOOST	BOOST
Maximum switching frequency	320 kHz	-	-	-	320 kHz	320 kHz	320 kHz	320 kHz
Terminal surface	Matte Tin (Sn)	-	-	-	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	THROUGH-HOLE	-	-	-	GULL WING	GULL WING	THROUGH-HOLE	GULL WING
Terminal pitch	2.54 mm	-	-	-	1.27 mm	1.27 mm	2.54 mm	1.27 mm
Terminal location	DUAL	-	-	-	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED	-	-	-	30	30	NOT SPECIFIED	30
width	7.62 mm	-	-	-	3.9 mm	3.9 mm	7.62 mm	3.9 mm

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