L6219R datasheet(4/11 Pages) STMICROELECTRONICS

部件名	L6219R

功能描述	STEPPER MOTOR DRIVER

PDF	11 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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4 / 11 page

L6219R

4/11

*) ICEX is the sum of the leakage of the power switch and recirculation diode.

Figure 4.

IIN(L)

Input Current

VIN = 0.84V

-3

-200

µA

VREF

Reference Voltage

Operating

1.5

ISS(ON)

Total Logic Supply Current

Io = I1 = 0.8V, No Load

ISS(OFF)

Total Logic Supply Current

Io = I1 = 2.4V, No Load

COMPARATORS

VREF/

Vsense

Current Limit Threshold (at trip

point)

Io = I1 = 0.8V

9.5

10.5

Io = 2.4V, I1 = 0.8V

13.5

16.5

Io = 0.8V, I1 = 2.4V

25.5

34.5

toff

Cutoff Time

Rt = 56K

Ω Ct = 820pF

µs

Turn Off Delay

Fig. 1

µs

PROTECTION

Thermal Shutdown Temperature

170

°C

Table 5. Electrical Characteristics (continued)

(Tj = 25°C, VS = 4.5V, VSS = 4.75V to 5.25V, VREF = 2V; unless otherwise specified) See fig. 6

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

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