L6474PD データシートの表示（PDF） - STMicroelectronics

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L6474PD

Fully integrated microstepping motor driver

STMicroelectronics 

Electrical characteristics

3

Electrical characteristics

L6474

VSA = VSB = 36 V; VDD = 3.3 V; internal 3 V regulator; TJ = 25 °C, unless otherwise

specified.

Symbol

Table 5. Electrical characteristics

Parameter

Test condition

Min. Typ. Max. Unit

General

VSthOn

VSthOff

VSthHyst

VS UVLO turn-on threshold

VS UVLO turn-off threshold

VS UVLO threshold hysteresis

Iq

Quiescent motor supply current

Tj(WRN)

Tj(SD)

Thermal warning temperature

Thermal shutdown temperature

Charge pump

7.5 8.2 8.9 V

6.6 7.2 7.8 V

0.7 1 1.3 V

Internal oscillator selected;

VREG = 3.3 V ext; CP

floating

0.5 0.65 mA

130

°C

160

°C

Vpump

fpump,min

fpump,max

Iboot

Voltage swing for charge pump oscillator

Minimum charge pump oscillator frequency(1)

Maximum charge pump oscillator frequency(1)

Average boot current

fsw,A = fsw,B = 15.6 kHz

POW_SR = ‘10’

10

V

660

kHz

800

kHz

1.1 1.4 mA

Output DMOS transistor

RDS(on)

High-side switch ON resistance

Low-side switch ON resistance

IDSS Leakage current

tr

Rise time(3)

Tj = 25 °C, Iout = 3 A

Tj = 125 °C, (2) Iout = 3 A

Tj = 25 °C, Iout = 3A

Tj = 125 °C, (2) Iout = 3 A

OUT = VS

OUT = GND

0.37

0.51



0.18

0.23

3.1

mA

-0.3

POW_SR = '00', Iout = +1 A

100

POW_SR = '00', Iout = -1 A

80

POW_SR = ‘11’, Iout = ±1 A

100

ns

POW_SR = ‘10’, Iout = ±1 A

200

POW_SR = ‘01’, Iout = ±1 A

300

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DocID022529 Rev 4

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