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參數(shù)資料
| 型號： | TA8435HQ |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2.5 A, PZIP25 |
| 封裝： | PLASTIC, HZIP-25 |
| 文件頁數(shù)： | 25/28頁 |
| 文件大?。?/td> | 562K |
| 代理商： | TA8435HQ |
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TA8435H/HQ
2006-3-2
6
OSCILLATOR FREQUENCY CALCULATION
The sawtooth oscillator (OSC) circuit consists of Q1 through Q4 and R1 through R4. Q2 is turned off when VOSC is
less than the voltage of 2.5 V + VBE (Q2), a value that is approximately equal to 2.85 V. VOSC is increased by COSC
charging through R1. Q3 and Q4 are turned on when VOSC becomes 2.85 V (High level.) The Low level of V (4) pin
is equal to VBE(Q2) + V(SAT)(Q4), which is approximately equal to 1.4 V. VOSC is calculated by following equation:
=
1
R
C
1
exp
1
5
V
OSC
-------------------
(1).
Assuming that VOSC = 1.4 V (t = t1) and = 2.85 V (t = t2), and given that COSC is the external capacitance
connected to pin (4) and R1 is an on-chip 10 k resistor, the OSC frequency is calculated as follows:
)
5
1.4
1
(
n
1
R
C
1
t
OSC
=
l
---------------------- (2),
)
5
2.85
1
(
n
1
R
C
2
t
OSC
=
l
-------------------- (3),
))
5
2.85
1
(
n
1
R
)
5
1.4
1
(
n
1
(R
C
1
t
1
f
OSC
1
2
OSC
=
=
l
F)
:
(kHz)(C
C
5.15
1
OSC
=
.
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| TA8470AF | BRUSHLESS DC MOTOR CONTROLLER, 1.2 A, PDSO22 |
| TA8473F | BRUSH DC MOTOR CONTROLLER, 1.2 A, PDSO16 |
| TA8473FNG | BRUSH DC MOTOR CONTROLLER, 1.2 A, PDSO16 |
| TA8473FG | BRUSH DC MOTOR CONTROLLER, 1.2 A, PDSO16 |
| TA8479F | BRUSHLESS DC MOTOR CONTROLLER, 1.5 A, PQFP44 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TA8435HQ(5) | 功能描述:馬達/運動/點火控制器和驅動器 Stepping Motor RoHS:否 制造商:STMicroelectronics 產品: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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TA8440 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:DC MOTOR FULL BRIDGE DRIVER |
| TA8440F | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:DC MOTOR FULL BRIDGE DRIVER F TYPE: UNDER DEVELOPMENT |
| TA8440H | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Full-bridge Driver (H-Switch) for DC Motor (Driver for Switching between Forward and Reverse Rotation) |
| TA8440HQ | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Full-bridge Driver (H-Switch) for DC Motor (Driver for Switching between Forward and Reverse Rotation) |
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