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參數(shù)資料
| 型號(hào)： | L9925 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | DMOS DUAL FULL BRIDGE DRIVER |
| 中文描述： | 偶的DMOS全橋驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大小： | 81K |
| 代理商： | L9925 |
2 INDEPENDENTLYCONTROLLED
H-BRIDGES
R
DS,ON
<0.9
@ T
amb
= 25
°
C,V
S
= 14V
0.8ADC CURRENT WITHOUT HEAT SINK
LOW QUIESCENT MODE I
q
<200
μ
A
THEMALPROTECTION
CROSSCONDUCTION PROTECTION
SUPPLYVOLTAGEUP TO 40V
CMOS COMPATIBLEINPUTS
OUTPUT SHORT-CIRCUIT PROTECTION
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 quiescentcur-
rent state and will draw less than 200
μ
A from the
battery.
BLOCK DIAGRAM
The charge pump is integrated on chip; no exter-
nal componentsare required. Fullperformanceis
maintaned for 9V <V
S
<16V. Extended ranges of
6V <<V
S
<9V and 16V <V
S
<40V yields full func-
tionally but with relaxed performance. Over tem-
perature protection and ESD protectionto all pins
ensures relability and reduces system integration
failures.
.....................................................................................................................................................................................................
March 1999
CHARGE
PUMP
TEMP
OUT1
VS1
OUT2
IN2
PGND1
VS2
OUT3
OUT4
IN1
EN1
GND
EN2
IN3
IN4
2nd FULL BRIDGE
1st FULL BRIDGE
5V
REGULATOR
EN1
EN1
EN1
EN2
40V
7V
7V
7V
T1
T1
T2
T2
T1 T2
CHARGE
PUMP
D99AT423
SO28
ORDERING NUMBER: L9925
L9925
DMOS DUAL FULL BRIDGE DRIVER
1/9
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