L9935 datasheet(1/19 Pages) STMICROELECTRONICS

No de pièce	L9935

Description	TWO-PHASE STEPPER MOTOR DRIVER

PDF	19 Pages

Scroll/Zoom	100%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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1 / 19 page

2 X 1.1A FULL BRIDGE OUTPUTS

INTEGRATED CHOPPING CURRENT REGU-

LATION

MINIMIZED POWER DISSIPATION DURING

FLYBACK

OUTPUT

STAGES

WITH

CONTROLLED

OUTPUT VOLTAGE SLOPES TO REDUCE

ELECTROMAGNETIC RADIATION

SHORT-CIRCUIT

PROTECTION

OF

ALL

OUTPUTS

ERROR-FLAG FOR OVERLOAD, OPEN LOAD

AND OVERTEMPERATURE PREALARM

DELAYED CHANNEL SWITCH-ON TO RE-

DUCE PEAK CURRENTS

MAX. OPERATING SUPPLY VOLTAGE 24V

STANDBY CONSUMPTION TYPICALLY 40

µA

SERIAL INTERFACE (SPI)

DESCRIPTION

The L9935 is a two-phase stepper motor driver

circuit suited to drive bipolar stepper motors. The

device can be controlled by a serial interface

(SPI). All protections required to design a well

protected system (short-circuit, overtemperature,

cross conduction etc.) are integrated.

November 1999

®

COMMON

LOGIC

OSCILLATOR

DIAGNOSTIC

BIASING

DRIVER

LOGIC

DRIVER

LOGIC

~

D99AT415

GND

20

1

GND

19

SRA

18

17

OUTA2

16

VS

N.C.

15

OSC

14

CDRV

13

OUTB2

12

SRB

11

GND

OUTA1

2

SCK

3

EN

8

CSN

7

VCC

6

SDO

5

SDI

4

OUTB1

9

GND

10

BLOCK DIAGRAM

PowerSO20

ORDERING NUMBER: L9935

L9935

TWO-PHASE STEPPER MOTOR DRIVER

1/19

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L9935 Fiches technique(PDF) 1 Page - STMicroelectronics

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