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2009.05 - Rev.A

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Power Management Switch IC Series or PCs and Digital Consumer Product

1ch Large Current Output

USB High Side Switch ICs

BD2041AFJ,BD2051AFJ,BD6518FJ,BD6519FJ



Description

Single channel high side switch IC for USB port is a high side switch having over current protection used in power supply line

of universal serial bus (USB).

N-channel power MOSFET of low on resistance and low supply current are realized in this IC.

And, over current detection circuit, thermal shutdown circuit, under voltage lockout and soft start circuit are built in.



Features

1) Built-in low on resistance Nch MOS FET Switch.

Typ = 80mΩ (BD2041AF/BD2051AFJ)

Typ = 100mΩ (BD6518F/BD6519FJ)

2) Continuous current load 0.5A

3) Control input logic

Active-Low : BD2041AFJ/ BD6519FJ

Active-High : BD2051AFJ/ BD6518FJ

4) Soft start circuit

5) Over current detection

6) Thermal shutdown

7) Under voltage lockout

8) Open drain error flag output

9) Reverse-current protection when power switch off

10) Power supply voltage range

2.7V~5.5V (BD2041AF/BD2051AFJ)

3.0V~5.5V (BD6518F/BD6519FJ)

11) Operating temperature range -40°C~85°C



Applications

USB hub in consumer appliances, Car accessory, PC, PC peripheral equipment, and so forth



Lineup

Parameter

BD2041AFJ

BD2051AFJ

BD6518FJ

BD6519FJ

Continuous current load (A)

0.5

0.5

0.5

0.5

Output current at short (A)

1.0

1.0

1.1

1.1

Control input logic

Low

High

High

Low



Absolute Maximum Ratings

Parameter

Symbol

Limits

Unit

Supply voltage

-0.3 to 6.0

V

Enable voltage

-0.3 to 6.0

V

/OC voltage

-0.3 to 6.0

V

/OC current

10

mA

OUT voltage

-0.3 to 6.0

V

Storage temperature

-55 to 150

°C

Power dissipation

PD

560

*1

mW

*1 In the case of exceeding Ta = 25°C, 4.48mW should be reduced per 1°C.

*

This chip is not designed to protect itself against radioactive rays.

※

IN, EN (/EN), and /OC terminal of BD2041AFJ/BD2051AFJ correspond to VDD, CTRL, and FLAG terminal of BD6518FJ/BD6519FJ, respectively.

No.09029EAT03