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| 型號： | TMC249A-SA |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnostics and SPI Interface |
| 中文描述： | 大電流微步步進(jìn)電機(jī)驅(qū)動器，帶有傳感器的失速檢測，保護(hù)/診斷和SPI接口 |
| 文件頁數(shù)： | 23/25頁 |
| 文件大?。?/td> | 219K |
| 代理商： | TMC249A-SA |
TMC249 / TMC249A DATA SHEET (V2.02 / Aug 12th, 2005)
23
Copyright 2005, TRINAMIC Motion Control GmbH & Co KG
AC Characteristics
AC characteristics contain the spread of values guaranteed within the specified supply voltage and
temperature range unless otherwise specified. Typical characteristics represent the average value of
all parts.
Logic supply voltage:
V
CC
= 3.3V,
Bridge supply voltage: V
S
= 14.0V,
Ambient temperature: T
A
= 27°C,
External MOSFET gate charge = 3.2nC
Symbol Parameter
Conditions
Min
Typ
Max
Unit
f
OSC
Oscillator frequency
using internal oscillator
C
OSC
= 1nF
±
1%
20
25
31
kHz
T
BL
Effective Blank time
BL1, BL2 = V
CC
1.35
1.5
1.65
μs
T
ONMIN
Minimum PWM on-time
BL1, BL2 =
GND
0.7
μs
Thermal Protection
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
T
JOT
Thermal shutdown
145
155
165
°C
T
JOTHYS
T
JOT
hysteresis
15
°C
T
JWT
Prewarning temperature
135
145
155
°C
T
JWTHYS
T
JWT
hysteresis
15
°C
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