Datasheet > L9925

L9925

更新时间： 2022-11-26 18:32:09

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		驱动
页数	文件大小	规格书
9页	84K
描述
DMOS DUAL FULL BRIDGE DRIVER

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L9925 数据手册

L9925

DMOS DUAL FULL BRIDGE DRIVER

2 INDEPENDENTLY CONTROLLED

H-BRIDGES

DS,ON

amb

<0.9Ω @ T

= 25°C, V = 14V

0.8A DC CURRENT WITHOUT HEAT SINK

LOW QUIESCENT MODE I^q<200µA

THEMAL PROTECTION

CROSSCONDUCTION PROTECTION

SUPPLYVOLTAGEUP TO 40V

CMOS COMPATIBLE INPUTS

OUTPUT SHORT-CIRCUIT PROTECTION

SO28

ORDERING NUMBER: L9925

DESCRIPTION

The L9925 is a dual full bridge driver for stepper

motor applications. Realized in BCD (Bipolar,

CMOS & DOS) techology, logic circuits, precise

linear blocks and power transistors are combined

to optimize circuit performance and minimize off

chip components.Schmitt triggers are used for all

input stages and are fully compatible with 5V

CMOS logic levels. When both enable signals are

low, the IC is commanded to a low quiescent cur-

rent state and will draw less than 200µA from the

battery.

The charge pump is integrated on chip; no exter-

nal componentsare required. Full performance is

maintaned for 9V <V^S<16V. Extended ranges of

6V <<V^S<9V and 16V <VS <40V yields full func-

tionally but with relaxed performance. Over tem-

perature protection and ESD protection to all pins

ensures relability and reduces system integration

failures.

BLOCK DIAGRAM

OUT1

VS1

OUT2

CHARGE

PUMP

CHARGE

PUMP

IN1

IN2

TEMP

EN1

PGND1

1st FULL BRIDGE

T1 T2

EN1

GND

VS2

REGULATOR

40V

T1 T2

EN2

IN3

IN4

OUT3

OUT4

2nd FULL BRIDGE

D99AT423

March 1999

1/9

...........................................................................................................................................................................................................

12 3 4 5 6 7...9

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