TPD2005F

2006-10-31

5

Electrical Characteristics

Characteristic

Symbol

Test

Cir-

cuit

Test Condition

Min

Typ.

Max

Unit

Operating supply voltage

―

―

8

―

40

V

Supply current

―

―

―

5

mA

“L” level

―

―

―

1.5

Input voltage

“H” level

―

3.5

―

―

V

―

−10

―

10

Input current

―

―

50

200

μA

On resistance

―

―

0.9

1.2

Ω

Output leakage current

―

―

―

100

μA

Overcurrent protection

―

―

1

―

3

A

―

―

―

160

―

Thermal shutdown

―

―

―

10

―

°C

―

11

200

Switching time

1

―

4

50

μs

Description of Protector Circuit

(1) Overtemperature Protection

There are four built-in overheating detector circuits, one each for channels 1 and 2; channels 3 and 4;

channels 5 and 6; and channels 7 and 8, respectively. The circuit logic is such that, when any of the four

detectors detects overheating, the circuit turns off the output of both its channels(for example, both

channels 1 and 2).

The overheating detector circuits feature hysteresis. After overheating is detected, normal operation is

restored only when the junction temperature falls by the hysteresis amount (10°C typ.) in relation to the

overheating detection temperature.

(2) Overcurrent Protection

When overcurrent is detected, the overcurrent limiter function limits the output current. Normal operation

is restored when the load current drops below the overcurrent detection value.

Test Circuit

Switching Time