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參數(shù)資料
| 型號： | SA56202 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | One-chip motor driver |
| 中文描述： | 單芯片電機(jī)驅(qū)動器 |
| 文件頁數(shù)： | 12/24頁 |
| 文件大小： | 117K |
| 代理商： | SA56202 |
9397 750 12772
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Preliminary data sheet
Rev. 01 — 19 July 2004
12 of 24
Philips Semiconductors
SA56202
One-chip motor driver
7.8 Loading motor driver
One of the linear channels is available to drive a DC loading motor. Pin V
DD(LD)
is used to
set the supply voltage for the loading motor driver.
Figure 11
depicts the voltage-steering
bridge topology of the SA56202.
7.9 Actuator motor drivers
Three linear channels are available to drive 3D actuators: focus, tracking and tilt. A pin
V
DD(ACT)
is used to set the supply voltage for these actuator drivers. The voltage-steering
bridge topology is the same as depicted in
Figure 11
. The mismatch of the voltage gain of
these 3 linear channels is guaranteed to be less than 5 %.
7.10 Charge pump
The on-board charge pump generates a regulated voltage of typically 18.2 V by using the
V
DD(SPN)
supply voltage. This boosted voltage is used to turn on the upper n-type DMOS
transistors of the output stages of the spindle driver, sled driver, loading driver and
actuator drivers. Recommended values for the pump-and-hold capacitor are 10 nF and
22 nF respectively (see also application diagram
Figure 13
). The charge pump should not
be loaded with other components or circuitry than these capacitors.
7.11 Thermal protection
If the junction temperature of the SA56202 exceeds 150
°
C, then a thermal warning signal
is given at pin TEMP. TEMP has an active-LOW open-drain output for easy interfacing to
3 V and 5 V logic. The temperature hysteresis for the thermal warning is 10
°
C. If the
junction temperature of the IC rises to 160
°
C, then a thermal shutdown is activated that
sets all power outputs in 3-state. The temperature hysteresis for the thermal shutdown is
30
°
C. As soon as the thermal shutdown deactivates at 130
°
C, all motor drivers continue
normal operation.
Fig 11. Voltage-steering bridge topology of linear driver.
001aaa437
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R
R
LDO
+
LDO
V
DD(LD)
VINREF
VINLD
188 k
188 k
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA56202TW | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:One-chip motor driver |
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| SA5621EWA | 制造商:KINGBRIGHT 功能描述:* |
| SA56-21EWA | 功能描述:LED 顯示器和配件 Single Red 625nm Common Anode RoHS:否 制造商:Avago Technologies 顯示器類型:7 Segment 數(shù)位數(shù)量:2 字符大小:7.8 mm x 14.22 mm 照明顏色:Red 波長:628 nm 共用管腳:Common Anode 工作電壓:2.05 V 工作電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 35 C 封裝:Tube |
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