参数资料
型号: MC34827A2EPR2
厂商: Freescale Semiconductor
文件页数: 49/57页
文件大小: 0K
描述: IC USB POWER MANAGER 20-QFN
标准包装: 1
应用: OR 控制器,UART/USB 数据,音频管理
电流 - 电源: 9µA
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-UFQFN 裸露焊盘
供应商设备封装: 20-QFN-EP(3x4)
包装: 标准包装
其它名称: MC34827A2EPR2DKR
TYPICAL APPLICATIONS
TYPICAL APPLICATIONS
TYPICAL APPLICATIONS
INTERFACE CIRCUIT IN A CELL PHONE
When the 34827 is used in a cell phone, the typical circuit
is shown in the Figure 42 . The I 2 C bus need pull-up resistors.
Typically they are 4.7 k Ω. When the audio outputs of the cell
V DDIO
2x4.7 k
phone baseband/application processor are direct-drive
signals, the audio signals can go into the corresponding pins
of 34827 directly. Otherwise these signals need DC-blocking
capacitors to remove the DC level.
Baseband
I 2 C
I2C_SDA
I2C_SCL
VDD
1.0 μF
Li+
MC34673
1.0 μF
GPIO
UART
INTB
VDDIO
RxD
TxD
ISET
OUT
12 k
9.1 k
USB Xcvr
D+
D-
VBUS
4.7 nF
VBUS
Test
Interface
0.1 μF
V AIO
2.0 k
JIG
BOOT
MIC
ID
DP
DM
GND
ID
D+
D-
GND
SHLD
Audio
*
*
SPK_L
SPK_R
* : For direct-drive audio output, these DC
blocking capacitors are not needed
Figure 42. Interface Circuit in a Cell Phone System
MC34827
Analog Integrated Circuit Device Data
Freescale Semiconductor
49
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