- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370416 > HA13568T (Hitachi,Ltd.) CD-ROM Combo Driver(CD-ROM COMBO 驅(qū)動(dòng)器) PDF資料下載
參數(shù)資料
| 型號(hào)： | HA13568T |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | CD-ROM Combo Driver(CD-ROM COMBO 驅(qū)動(dòng)器) |
| 中文描述： | 的CD - ROM組合驅(qū)動(dòng)器（CD - ROM光碟康寶驅(qū)動(dòng)器） |
| 文件頁數(shù)： | 12/22頁 |
| 文件大?。?/td> | 159K |
| 代理商： | HA13568T |
HA13568T
12
External Components
(cont)
Parts No.
Recommende
d Value
Recommende
d Range
Purpose
Note
Ct1
150 pF
≥
120 pF
Time constant for CLK oscillation. Use a
capacitor with good temperature characteristics.
3
Ct2
0.033
μ
F
Time constant for start-up oscillation. Use a
capacitor with good temperature characteristics.
4
Ct3
470 pF
≥
390 pF
PWM carrier oscillation time constant
5
Q1
Note:
Transistor for voltage regulator
1. The output current maximum value Iospnmax of SPN driver is controlled according to the
following equation. However, Vspncl is the current limited reference voltage. (See the electrical
characteristics)
Iospnmax =Vspncl
Rnf
2. The maximum duty Dmax of SLD driver output is controlled according to the following equation.
Vrt
Vhct3
Vlct3
Rt
Vrt
Rt2
Vlct3
Dmax =
×
100 (%)
However,
Rt2
Rt
Vlct3
Vrt
Rt = Rt1 + Rt2,
≥
Where, Vrt
: RT pin voltage (See the electrical characteristics)
Vlct3 : CT3 pin low voltage (
≈
1.3 V)
Vhct3 : CT3 pin high voltage (
≈
3.3 V)
Since Vrt
≈
Vhct3, Dmax is not limited at 100% when Rt1 = 0
.
3. The CLK oscillation frequency is determined by the following equation.
Vrt
8 Ct1 Rt
Vct1
fclk =
Where, Vrt
: RT pin voltage (See the electrical characteristics)
Vct1 : CT1 pin voltage amplitude (
≈
1 V)
4. The Ct2 for start-up oscillation is determined by the following equation.
J
P Kt Ispnmax
6
Tc2 =
1
Ct2 =
Tc2 Vrt
8 Rt (Vhct2
Vlct2)
Where, J
: Spindle motor inertia (kg · cm · S
2
)
: Number of spindle motor poles (Total number of S poles and N poles)
: Spindle motor torque constant (kg · cm / A)
Vhct2 : CT2 pin high voltage (
≈
3.3 V)
Vlct2 : CT2 pin low voltage (
≈
1.3 V)
5. The PWM oscillation frequency fpwm is determined by the following equation.
Vrt
8 Ct3 Rt (Vhct3
Vlct3)
P
Kt
fpwm =
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HA13571FR | Combo (Spindle & VCM) Driver for HDD |
| HA13605A | Three-Phase Brushless Motor Driver |
| HA13609ANT | Three-Phase Brushless Motor Driver |
| HA13614 | Combo (Spindle & VCM) Driver |
| HA13614FH | Combo (Spindle & VCM) Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA13571FR | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Combo (Spindle & VCM) Driver for HDD |
| HA13601S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC Motor Controller/Driver |
| HA13605A | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Three-Phase Brushless Motor Driver |
| HA13609ANT | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Three-Phase Brushless Motor Driver |
| HA13614 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Combo (Spindle & VCM) Driver |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。