L9942 datasheet(13/37 Pages) STMICROELECTRONICS

部件名	L9942

功能描述	Integrated stepper motor driver for bipolar stepper motors with microstepping and programmable current profile

PDF	37 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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13 / 37 page

L9942

3 Electrical specifications

13/37

3.4

Electrical characteristics

3.4.1

Supply

VS = 7 to 16V, VCC = 3.0 to 5.3 V, Tj = -40 to 150 °C, IREF = -200 µA , unless otherwise

specified. The voltages are referred to GND and currents are assumed positive, when the

current flows into the pin.

Note: 1 This parameter is guaranteed by design.

Table 7.

Supply

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

VS DC supply current in

active mode

VS = 13.5 V, EN=VCC outputs

floating

VS quiescent supply current

VS = 13.5 V, TEST,

EN = 0V outputs

floating

Tj = -40 °C

to 25°C

µA

Tj = 125 °C

ICC

VCC DC supply current in

active mode

VCC = 5.0 V EN=VCC,

DI=CLK=STEP=0V

VCC = 5.0 V TEST;

EN = 0V; CSN =

VCC no clocks

outputs floating

Tj = -40 °C

to 25°C

µA

ICC

VCC quescent suppy current

CSN=VCC no

clocks outputs

floating

Tj = 125 °C

µA

VS = 13.5 V, VCC =

5.0 V

Tj = -40 °C

to 25°C

µA

IS + ICC

Sum quiescent supply current

TEST; EN=0V

CSN=VCC no

clocks outputs

floating

Tj = 125 °C

tsetPOR

VCC on set up time

EN = 5V, CSN=CLK=0V DO

changes from high ohmic to logic

level LOW

µs

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