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參數(shù)資料
| 型號： | AT5560 |
| 廠商： | Aimtron Technology Corp. |
| 英文描述： | VCM Driver for Mobile Phone |
| 中文描述： | 氯乙烯驅(qū)動移動電話 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 341K |
| 代理商： | AT5560 |
AT5560
Preliminary Product Information
VCM Driver for Mobile Phone
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:
http://www.aimtron.com.tw
2006/08/24 REV:0.4 Email:
service@aimtron.com.tw
7
z
The following diagrams show the characteristic curve for the voltage at IM pin vs. duty ratio of PWM
signal and output current vs. duty ratio of PWM signal.
At this example, the PWM frequency is 20KHz, the sense resistance, RNF=1.5
Ω
, and the R1=13K
Ω
,
R2=20K
Ω
, and C1=0.1uF are set in front of IN pin respectively. Above settings can make AT5560 output
90mA when duty ratio of PWM signal is 80%.
From result, the correlation of output current and duty ratio of PWM signal is highly linear.
IN pin voltage vs. duty ratio of PWM
VCC=2.8V
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
20
40
60
80
100
Duty ratio of PWM (%)
I
PWM 20KHz
Output current vs. duty ratio of PWM
VCC=2.8V
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
0
20
40
60
80
100
Duty ratio of PWM (%)
O
PWM 20KHz
z
The smaller value of sense resistance, RNF, will cause lesser voltage variation at voltage IM pin. The
accuracy of output current is closely dependent on voltage at IM pin. Another reason choosing smaller
value of RNF is that the decreasing voltage drop at IM pin can crease the maximum output driving current
when the PVCC is fixed. So RNF=1.5
Ω
is the better choice.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AT5562 | 制造商:AIMTRON 制造商全稱:AIMTRON 功能描述:2-channel DC Motor Driver For Toy |
| AT5562DPBF | 制造商:AIMTRON 制造商全稱:AIMTRON 功能描述:2-channel DC Motor Driver For Toy |
| AT5562SGRE | 制造商:AIMTRON 制造商全稱:AIMTRON 功能描述:2-channel DC Motor Driver For Toy |
| AT55HV | 功能描述:整流器/與可變電容器 PTFE Dielectric 600V 1.5 to 55.0pF RoHS:否 制造商:Xicon 電容范圍:2.8 pF to 12.5 pF 容差: 電壓額定值:200 V 工作溫度范圍:- 35 C to + 85 C 端接類型:SMD/SMT 產(chǎn)品:Trimmer Capacitors - Ceramic Dielectric |
| AT5608 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Bi-directional Motor Driver |
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