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参数资料
| 型号： | A3904EEWTR-P |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 2/8页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRVR VOICE COIL LV 6DFN |
| 标准包装： | 1 |
| 应用： | 音圈电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | 127mA |
| 电压 - 负载： | 0.5 V ~ 5.9 V |
| 电源电压： | 2.4 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-XFDFN 裸露焊盘 |
| 供应商设备封装： | 6-MLP/DFN 裸露焊盘（1.5x2） |
| 包装： | 标准包装 |
| 产品目录页面： | 1140 (CN2011-ZH PDF) |
| 其它名称： | 620-1216-6 |
A3904
Low Voltage Voice Coil Motor Driver
Features and Benefits
? Fixed I 2 C logic thresholds
? 8-bit D-to-A converter
? 500 μ A resolution
? Low voltage I 2 C serial interface
? Low current-draw sleep mode
? 2.4 to 5.5 V operation
? 1.1 mm × 0.7 mm, 0.5 mm maximum overall height WLCSP
Package: 6-ball wafer-level chip scale
package (CG)
1.1 mm × 0.7 mm
Description
The A3904 is a voice coil motor (VCM) driver, with an
I 2 C-compatible serial interface. Designed for camera autofocus
and zoom applications, this high accuracy digital IC is provided
in a WLCSP package ideal for portable devices. Its operating
voltage range is 2.4 to 5.5 V, and its maximum output current
is 127 mA.
Output current is programmed via the I 2 C interface, in 500 uA
increments, with clock rates up to 400 kHz. I 2 C inputs set the
internal D-to-A converter output voltage that is the reference
for linear current control via a MOSFET output sink transistor.
To conserve battery power, a logic low signal on the SLEEPZ
input disables the output MOSFET and reduces the supply
current to <0.5 μ A.
A3904 internal protection features include thermal shutdown
and undervoltage lockout. Logic input levels are independent
of the supply voltage. The operating temperature range is
–40°C to 85°C.
The A3904 is available in a bumped wafer level chip scale
package (WLCSP) (suffix CG).
Not to scale
Functional Block Diagram
1.8 V
VDD
IOUT
2.4 to 5.5 V
1.8 k Ω
1.8 k Ω
I 2 C
Master
Bandgap
Ref
8 Bit DAC
SDA
I 2 C Serial
SCL
Interface
2.4 Ω
GND
I 2 C
Slave
SLEEPZ
PAD
EW only
3904-DS, Rev. 4
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相关代理商/技术参数 |
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| A3906 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Low Voltage Stepper and Single/Dual DC Motor Driver |
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