LTC1477CS8#TR datasheet, PDF - EEWORLD Datasheet

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LTC1477CS8#TR: DescriptionIC switch prot HI side sgl 8soic; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size195KB，8 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC1477CS8#TR Overview

IC switch prot HI side sgl 8soic

LTC1477CS8#TR Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Maker	Linear ( ADI )
Parts packaging code	SOIC
package instruction	SOP, SOP8,.25
Contacts	8
Manufacturer packaging code	S8
Reach Compliance Code	not_compliant
ECCN code	EAR99
Number of drives	1
Interface integrated circuit type	BUFFER OR INVERTER BASED PERIPHERAL DRIVER
JESD-30 code	R-PDSO-G8
JESD-609 code	e0
length	4.9 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	8
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output current	1 A
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	255
power supply	3/5 V
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply voltage	5.5 V
Minimum supply voltage	2.7 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	3.9 mm
Base Number Matches	1

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LTC1477/LTC1478

Single and Dual Protected

High Side Switches

FEATURES

DESCRIPTION

The LTC

1477/LTC1478 protected high side switches

provide extremely low R

DS(ON)

switching with built-in

protection against short-circuit and thermal overload con-

ditions. A built-in charge pump generates gate drive

higher than the supply voltage to fully enhance the internal

NMOS switch. This switch has no parasitic body diode and

therefore no current flows through the switch when it is

turned off and the output is forced above the input supply

voltage. (DMOS switches have parasitic body diodes that

become forward biased under these conditions.)

Two levels of protection are provided by the

LTC1477/LTC1478. The first level of protection is short-

circuit current limit which is set at 2A. The short-circuit

current can be reduced to as low as 0.85A by disconnect-

ing portions of the power device (see Applications Infor-

mation). The second level of protection is provided by

thermal overload protection which limits the die tempera-

ture to approximately 130°C.

The LTC1477 single is available in 8-lead SO packaging.

The LTC1478 dual is available in 16-lead SO packaging.

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

Extremely Low R

DS(ON)

Switch: 0.07

Ω

No Parasitic Body Diode

Built-In Short-Circuit Protection: 2A

Built-In Thermal Overload Protection

Operates from 2.7V to 5.5V

Inrush Current Limited

Ultralow Standby Current: 0.01µA

Built-In Charge Pump

Controlled Rise and Fall Times: t

= 1ms

Single Switch in 8-Pin SO Package

Dual Switch in Narrow 16-Pin SO Package

APPLICATIONS

Notebook Computer Power Management

Power Supply/Load Protection

Supply/Battery Switch-Over Circuits

Circuit Breaker Function

"Hot Swap" Board Protection

Peripheral Power Protection

SI PLIFIED BLOCK DIAGRAM

INS

IN1

IN2

IN3

5.20

OUTPUT VOLTAGE (V)

GATE CHARGE

AND

DISCHARGE

CONTROL LOGIC

5.10

= 25°C

IN1

= V

IN2

= V

IN3

= V

INS

= 5V

5.00

4.90

4.80

4.70

4.60

CHARGE

PUMP

CURRENT LIMIT

AND THERMAL

SHUTDOWN

OUT

*NMOS SWITCHES WITH NO PARASITIC BODY DIODES

LTC1477/1478 • TA01

Switch Output Voltage

0.25

0.5

0.75 1.00

1.25

OUTPUT CURRENT (A)

1.50

LTC1477/1478 • TP02

LTC1477CS8#TR Related Products

	LTC1477CS8#TR	LTC1477CS8#PBF	LTC1478CS#TR	LTC1478CS#PBF	LTC1477CS8#TRPBF	LTC1478CS#TRPBF
Description	IC switch prot HI side sgl 8soic	IC HI-side switch prot sngl8soic	IC swtch prot hiside dual 16soic	IC HI-SIDE SW PROTEC DUAL 16SOIC	IC HI-SIDE SWITCH PROT SNGL8SOIC	IC HI-SIDE SW PROTEC DUAL 16SOIC
Brand Name	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	incompatible	conform to	incompatible	conform to	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC
package instruction	SOP, SOP8,.25	SOP, SOP8,.25	SOP,	SOP, SOP16,.25	SOP, SOP8,.25	SOP,
Contacts	8	8	16	16	8	16
Manufacturer packaging code	S8	S8	S	S	S8	S
Reach Compliance Code	not_compliant	compliant	not_compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Interface integrated circuit type	BUFFER OR INVERTER BASED PERIPHERAL DRIVER	BUFFER OR INVERTER BASED PERIPHERAL DRIVER	BUFFER OR INVERTER BASED PERIPHERAL DRIVER	BUFFER OR INVERTER BASED PERIPHERAL DRIVER	BUFFER OR INVERTER BASED PERIPHERAL DRIVER	BUFFER OR INVERTER BASED PERIPHERAL DRIVER
JESD-30 code	R-PDSO-G8	R-PDSO-G8	R-PDSO-G16	R-PDSO-G16	R-PDSO-G8	R-PDSO-G16
JESD-609 code	e0	e3	e0	e3	e3	e3
length	4.9 mm	4.9 mm	9.9 mm	9.9 mm	4.9 mm	9.9 mm
Humidity sensitivity level	1	1	1	1	1	1
Number of functions	1	1	1	1	1	1
Number of terminals	8	8	16	16	8	16
Maximum operating temperature	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	SOP	SOP	SOP	SOP	SOP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	255	260	235	260	250	260
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.75 mm	1.75 mm	1.75 mm	1.75 mm	1.75 mm	1.75 mm
Maximum supply voltage	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply voltage	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V
surface mount	YES	YES	YES	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)	Matte Tin (Sn)	Tin/Lead (Sn/Pb)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	40	30	20	30	NOT SPECIFIED	30
width	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm
Base Number Matches	1	1	1	1	1	1
Number of drives	1	1	-	2	1	-
Maximum output current	1 A	1 A	-	1 A	1 A	-
Encapsulate equivalent code	SOP8,.25	SOP8,.25	-	SOP16,.25	SOP8,.25	-
power supply	3/5 V	3/5 V	-	3/5 V	3/5 V	-

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