TPD1052F

2012-01-20

5

Characteristics

Symbol

Test

Circuit

Test Condition

Min

Typ.

Max

Unit

Operating supply voltage

⎯

⎯

5

12

18

V

Supply current

⎯

Output open.

⎯

⎯

10

μA

Output leakage current

⎯

⎯

⎯

10

μA

⎯

2.0

⎯

⎯

V

Input voltage

⎯

⎯

⎯

0.8

V

⎯

⎯

⎯

200

μA

Input current

⎯

－

0.2

⎯

0.2

μA

Drain-source ON-resistance

⎯

⎯

0.5

0.8

Ω

Diagnosis output

voltage

Low level

⎯

⎯

⎯

0.4

V

Diagnosis output

current

High level

⎯

⎯

⎯

10

μA

⎯

1.2

1.7

2.3

A

Overcurrent detection

⎯

0.8

1.3

1.8

A

Overtemperature detection

⎯

⎯

150

160

200

°C

Mask time(Note 2)

⎯

⎯

3.8

⎯

ms

1

1

10

30

μs

Switching times

1

1

20

60

μs

Note 2: About the Mask time function

Mask time function is built in TPD1052F. Mask time is decided to prevent discharge electricity by

switching-mode overcurrent protection that occur by inrush current. To prevent discharge electricity by

overcurrent protection(switching) that operate by inrush current, Mask time is used. Overcurrent protection is

clamp current in Mask time from VIN=H.

Mask time can roughly set at nether expression.

⎟⎟

⎠

⎞

⎜⎜

⎝

⎛

−

×

×

−

=

mask

R

ref

R

1

ln

mask

R

mask

C

mask

t

[s]

※

※

When overcurrent protection(clamp) is operating, TPD1052F becomes high temperature. Therefore

please set Mask time for channel temperature to become 150℃ or less.

※

If you do not use Mask time, please open the MASK pin.