L6474H(2011) Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

L6474H
(Rev.:2011)

easySPIN – fully integrated microstepping motor driver

STMicroelectronics 

L6474

3

Electrical characteristics

Electrical characteristics

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

specified.

Table 5. Electrical characteristics

Symbol

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

Voltage swing for charge pump oscillator

Minimum charge pump oscillator frequency

(1)

10

V

660

kHz

fpump,max

Maximum charge pump oscillator frequency

(1)

800

kHz

Iboot

Average boot current

Output DMOS transistor

RDS(on)

High side switch ON resistance

Low side switch ON resistance

IDSS

Leakage current

tr

Rise time (3)

fsw,A = fsw,B = 15.6 kHz

POW_SR = ‘10’

1.1 1.4 mA

Tj = 25 °C, Iout = 3A

Tj = 125 °C, (2) Iout = 3A

Tj = 25 °C, Iout = 3A

Tj = 125 °C, (2) Iout = 3A

OUT = VS

OUT = GND

0.37

0.51

Ω

0.18

0.23

3.1

mA

-0.3

POW_SR = '00', Iout = +1A

100

POW_SR = '00', Iout = -1A

80

POW_SR = ‘11’, Iout = ±1A

100

ns

POW_SR = ‘10’, Iout = ±1A

200

POW_SR = ‘01’, Iout = ±1A

300

Doc ID 022529 Rev 2

9/51

Share Link: