L298 datasheet(4/13 Pages) STMICROELECTRONICS

4 / 13 page

Figure 1 : Typical Saturation Voltage vs. Output

Current.

Figure 2 : Switching Times Test Circuits.

Note : For INPUT Switching, set EN = H

For ENABLESwitching, set IN = H

1) 1)Sensing voltage can be –1 V for t

≤ 50 µsec; in steady state Vsens min ≥ –0.5 V.

2) See fig. 2.

3) See fig. 4.

4) The load must be a pure resistor.

ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

Test Co ndi tions

Min .

Typ .

Max.

Uni t

T1 (Vi)

Source Current Turn-off Delay

0.5 Vi to 0.9 IL

(2); (4)

1.5

µs

T2 (Vi)

Source Current Fall Time

0.9 IL to 0.1 IL

(2); (4)

0.2

µs

T3 (Vi)

Source Current Turn-on Delay

0.5 Vi to 0.1 IL

(2); (4)

µs

T4 (Vi)

Source Current Rise Time

0.1 IL to 0.9 IL

(2); (4)

0.7

µs

T5 (Vi)

Sink Current Turn-off Delay

0.5 Vi to 0.9 IL

(3); (4)

0.7

µs

T6 (Vi)

Sink Current Fall Time

0.9 IL to 0.1 IL

(3); (4)

0.25

µs

T7 (Vi)

Sink Current Turn-on Delay

0.5 Vi to 0.9 IL

(3); (4)

1.6

µs

T8 (Vi)

Sink Current Rise Time

0.1 IL to 0.9 IL

(3); (4)

0.2

µs

fc (Vi)

Commutation Frequency

IL = 2A

KHz

T1 (Ven)

Source Current Turn-off Delay

0.5 Ven to 0.9 IL

(2); (4)

µs

T2 (Ven)

Source Current Fall Time

0.9 IL to 0.1 IL

(2); (4)

µs

T3 (Ven)

Source Current Turn-on Delay

0.5 Ven to 0.1 IL

(2); (4)

0.3

µs

T4 (Ven)

Source Current Rise Time

0.1 IL to 0.9 IL

(2); (4)

0.4

µs

T5 (Ven)

Sink Current Turn-off Delay

0.5 Ven to 0.9 IL

(3); (4)

2.2

µs

T6 (Ven)

Sink Current Fall Time

0.9 IL to 0.1 IL

(3); (4)

0.35

µs

T7 (Ven)

Sink Current Turn-on Delay

0.5 Ven to 0.9 IL

(3); (4)

0.25

µs

T8 (Ven)

Sink Current Rise Time

0.1 IL to 0.9 IL

(3); (4)

0.1

µs

L298

4/13

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