LTC1477CS8PBF Linear Technology Corporation, LTC1477CS8PBF Datasheet

LTC1477CS8PBF

Manufacturer Part Number

LTC1477CS8PBF

Description

SOP8

Manufacturer

Linear Technology Corporation

Datasheets

1.LTC1477CS8PBF.pdf (8 pages)

2.LTC1477CS8PBF.pdf (8 pages)

Specifications of LTC1477CS8PBF

Date_code

08+

Current page: 1 of 8
Download datasheet (204Kb)

APPLICATIONS

SI PLIFIED BLOCK

FEATURES

Extremely Low R

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: 0.01 A

Built-In Charge Pump

Controlled Rise and Fall Times: t

Single Switch in 8-Pin SO Package

Dual Switch in Narrow 16-Pin SO Package

Notebook Computer Power Management

Power Supply/Load Protection

Supply/Battery Switch-Over Circuits

Circuit Breaker Function

"Hot Swap" Board Protection

Peripheral Power Protection

CONTROL LOGIC

GATE CHARGE

DISCHARGE

CHARGE

PUMP

AND

*NMOS SWITCHES WITH NO PARASITIC BODY DIODES

INS

DS(ON)

CURRENT LIMIT

AND THERMAL

SHUTDOWN

Switch: 0.07

DIAGRAM

IN1

= 1ms

IN2

IN3

LTC1477/1478 • TA01

OUT

Single and Dual Protected

DESCRIPTION

The LTC

provide extremely low R

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.

1477/LTC1478 protected high side switches

5.20

5.10

4.70

4.60

5.00

4.90

4.80

High Side Switches

IN1

0.25

= 25 C

Switch Output Voltage

= V

IN2

LTC1477/LTC1478

OUTPUT CURRENT (A)

0.5

= V

DS(ON)

IN3

0.75

= V

INS

switching with built-in

= 5V

1.00

LTC1477/1478 • TP02

1.25

1.50

Related parts for LTC1477CS8PBF

Related keywords

LTC1477CS8PBF datasheet
LTC1477CS8PBF data sheet
LTC1477CS8PBF pdf datasheet
LTC1477CS8PBF component
LTC1477CS8PBF part
LTC1477CS8PBF distributor
LTC1477CS8PBF RoHS
LTC1477CS8PBF datasheet download