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参数资料
| 型号： | MC34827A1EPR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 46/57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 裸露焊盘（3x3） |
| 包装： | 标准包装 |
| 其它名称： | MC34827A1EPR2DKR |
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TYPICAL APPLICATIONS
APPLICATION INFORMATION
DECOUPLING CAPACITOR
Decoupling capacitors are required at all power supply
input and output pins. For VDD pin, a X5R capacitor of 1.0 μ F
is recommended. For VBUS pin, because it also acts as the
microphone input, the decoupling capacitance at VBUS pin
must be carefully considered. Assuming the voice band is
3.4 kHz and the pull-up resistance for the microphone is
2.0 k Ω , the decoupling capacitance at the VBUS pin should
be less than 22 nF. A 4.7 nF X5R capacitor is recommended
for the typical application.
VDD
VDDIO
ACCESSORY IDENTIFICATION TIMING
When an accessory is connected to the 34827, the 34827
identifies the accessory type and then interrupts the cell
phone baseband. Figure 38 to Figure 41 show the
identification timing for different accessories. When the
phone is on the power-on state, the VDDIO has already been
powered. When the phone is on the power-off state, the
VDDIO is not powered yet. Once the VDDIO is powered, the
I 2 C of the 34827 can be accessed.
VDD
VDDIO
INT_MASK
INT_MASK
INT_MASK is cleared manually
by I2C after I2C is valid
Attaching
ID Identification flow delay
Attaching
t1
t2
t2 = t wait (t1 = t det - t wait )
t2 = t det - t1 (t1 < t det - t wait )
t wait : Delay defined by the Switching
Wait in register 0x09 when the
WAIT=1
t det : ID Identification flow delay
INTB
INTB
Delay defined by the Switching
Wait in register 0x09 when the
WAIT=1
JIG_ON
HI-Z
JIG_ON
HI-Z
Delay defined by the Switaching Wait
in register 0x09 when the WAIT=1
Switches
OPEN
CLOSED
Switches
OPEN
CLOSED
1.2ms
I2C
VALID
VALID
VALID
I2C
NOT VALID
VALID
(a) Audio accessory identification Timing in phone power -on state
(b) Audio accessory identification Timing in phone power -off state
Figure 38. ID Based Accessory Identification Timing Diagram
MC34827
Analog Integrated Circuit Device Data
46
Freescale Semiconductor
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相关代理商/技术参数 |
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|---|---|
| MC34827A2EPR2 | 功能描述:USB 接口集成电路 MINI USB IC RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| MC34829 | 制造商:SPC Multicomp 功能描述:CONNECTOR FPC SMD 0.5MM 20WAY |
| MC3482BL | 制造商:Motorola Inc 功能描述: |
| MC34831 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL SMT 7WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, SMT, 7WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR HEADER 7POS, 1.25MM; Connector Type:Wire to Board; Series:1251S; Contact Termination:Surface Mount Vertical; Gender:Header; No. of Contacts:7; No. of Rows:1; Pitch Spacing:1.25mm; Contact Plating:Tin ;RoHS Compliant: Yes |
| MC34833 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL SMT 11WAY |
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