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參數(shù)資料
| 型號： | LB1847 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | PWM Current Control Type Stepping Motor Driver(PWM電流控制馬達(dá)驅(qū)動器) |
| 中文描述： | PWM電流控制型步進電機驅(qū)動器（PWM電流控制馬達(dá)驅(qū)動器） |
| 文件頁數(shù)： | 14/16頁 |
| 文件大小： | 126K |
| 代理商： | LB1847 |
LB1847
No. 5982-14/16
Equation when logic voltage V
CC
= 5 V
CR pin voltage E1 = V
CC
R/(R1+R2+R) [V]
Noise cancel time t
n
(R1+R2) C 1n {(E1-1.5)/(E1-4.0)} [s]
Switching OFF time t
off
–R C 1n (1.5/E1) [s]
Internal resistance at CR pin : R1 = 1 k
, R2 = 300
(typ.)
*The CR constant setting range in Figure 2 on page 15 is given for reference. It applies to a switching OFF time in the range from 8
to 100
μ
s. The switching time can also be made higher than 100
μ
s. However, a capacitor value of more than several thousand pF
will result in longer noise canceling time, which can cause the output current to become higher than the set current. The longer
switching OFF time results in higher output current ripple, causing a drop in average current and rotation efficiency. When keeping
the switching OFF time within 100
μ
s, it is recommended to stay within the CR constant range shown in Figure 2.
4. Simultaneous ON prevention function
This IC incorporates a circuit to prevent feedthrough current when phase switching. For reference, the output ON and OFF delay
times at PHASE and ENABLE switching are given below.
Reference data * typical value
Internal configuration at CR pin
Figure 1
Sink side
Source side
PHASE switching
ON delay time
1.9
μ
s
0.8
μ
s
1.4
μ
s
0.9
μ
s
2.15
μ
s
1.2
μ
s
2.2
μ
s
1.8
μ
s
1.7
μ
s
1.35
μ
s
2.75
μ
s
5.8
μ
s
(Low ->
Hi)
PHASE switching
OFF delay time
ON delay time
(Hi -> Low)
OFF delay time
ENABLE switching
ON delay time
OFF delay time
5. Noise canceler
This IC has a noise canceling function to prevent malfunction due to noise spikes generated when switching ON. The noise cancel
time t
n
is determined by internal resistance of the CR pin and the constant of the externally connected CR components. The constant
also determines the switching OFF time.
Figure 1 shows the internal configuration at the CR pin, and Figure 2 the CR pin constant setting range.
A11321
R:15 k
C:470 pF
300
CR pin
E1
One-shot multi-blanking
time circuit
R1
R2
1 k
V
CC
line
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LB1847_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PWM Current Control Type Stepping Motor Driver |
| LB1847_12 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Digital IC PWM Current Control Type Stepping Motor Driver |
| LB1847-E | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 PRINTER RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LB1847L-E | 制造商:ON Semiconductor 功能描述:STEPPING MOTOR DRIVER - Ammo Pack |
| LB1847L-K-E | 制造商:ON Semiconductor 功能描述:STEPPING MOTOR DRIVER - Ammo Pack |
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