LTC1045 查看數據表（PDF） - Linear Technology
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LTC1045 Datasheet PDF : 20 Pages
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LTC1045
TYPICAL APPLICATION
Power MOSFET Driver Low Power Consumption Stepper Motor Driver
+VM
1 VOH
2 IN1
∅1
LTC1045
+
–
3 IN2
∅1
+
TTL STEPPER
–
MOTOR PHASE
SIGNALS
4 IN3
∅2
+
–
5 IN4
∅2
+
–
5V
6 IN5
+
51k
–
≈ 1.4V
7 IN6
+
20k
–
C
STEP A
CLOCK
8 VTRIP2
V+ 20
OUT1 19
OUT2 18
OUT3 17
OUT4 16
OUT5 15
OUT6 14
13
DIS
RP
0.1µF
9 VTRIP1
10 V–
≈ 0.2V
12
ISET
VOL 11
1k
B
BUZ171
RH
**
4-PHASE BIFILAR
STEPPER MOTOR
*
*
BUZ71A
BUZ71A
BUZ71A
BUZ71A
**
**
**
**
A
B tON tHOLD
FULL STEP DRIVER (5V ≤ VM ≤ 15V)
tON ≈ 3RPC
RpC = L/R L IS WINDING INDUCTANCE
R = RWINDING + RDS(ON)P + RDS(ON)N
IHOLD ≈ VM/RH
*VARISTOR GE V24ZA50
**FOR VM ≥ 10V ADD 470Ω IN SERIES
WITH LTC1045 OUTPUTS
MOTOR GND
1045 TA17
RELATED PARTS
PART NUMBER
LT1016
LT1039
LTC1440/LTC1441/LTC1442
DESCRIPTION
Ultrafast Precision Comparator
Triple RS232 Driver/Receiver with Shutdown
Ultralow Power, Single/Dual Comparator with Reference
COMMENTS
10ns Propagation Delay
±12V Supply, No Supply Current in Shutdown
2.8µA Supply Current
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com
1045fc
LT/LCG 1101 REV C 1.5K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1988
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