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参数资料
| 型号： | MC34827A1EPR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 16/57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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FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
According to the status of the VBUS and VDD power
supplies, the 34827 has five operational modes: Power Down
mode, VBUS Power mode, Standby mode, Active mode, and
Power Save mode. The mode-transition diagram is given in
Power
Down
VBUS power down
VBUS power up
V DD > V POR
V DD < V POR
VBUS
Power
V DD > V POR
V DD < V POR
I 2 C resets ACTIVE bit or
Active
detachment of accessory
ID detection or
VBUS detection
I 2 C or detection
Standby
I C or
2
detection of
activity
of no activity
Detachment
of accessory
Power
Save
Figure 13. Mode Transition Diagram
POWER DOWN MODE
The Power Down mode is when neither the VDD nor the
VBUS is powered. In this mode, the IC does not respond to
any accessory attachment except for a power supply. When
an external power supply is plugged, the 34827 enters the
VBUS Power mode.
the Device Wake Up bits in Timing Set 1 register (refer to
In Standby mode, all signal switches and the power
MOSFET are turned off. The ISET, JIG pins output high
impedance and BOOT pin outputs low logic voltage.
If detecting an accessory attachment, the 34827 moves to
the Active mode for further accessory identification.
VBUS POWER MODE
34827 enters the VBUS Power mode when VBUS is
powered but VDD is not. The 34827 supports regular USB
port, dedicated charger, USB charger, 5 wire charger,
charger on the A/V cable and any other accessory with
powered VBUS voltage. In VBUS Power mode, the internal
power MOSFET is turned on to power the charger IC,
charging the battery in the phone. ISET pin outputs high
impedance to select a lower charge current level for the
charger IC.
STANDBY MODE
The Standby mode is when the VDD voltage is higher than
the POR (Power-On Reset) threshold and no accessory is
attached. In this mode only ID detection circuit, I 2 C interface,
and internal registers are powered in order to minimize the
quiescent current of VDD. The ID detection circuit samples
the status of ID line in a period which can be programmed by
ACTIVE MODE
The Active mode starts when an accessory is plugged with
VDD powered. The 34827 identifies the accessory,
configures the signal paths according to the identification
result and interrupts the baseband for further actions.
Different functions will be enabled according to the
identification result. The quiescent current of VDD in Active
mode is dependent on the type of attached accessory. The
signal switches can also be turned on manually. See more
Mode can be changed from Active to Standby either by
accessory detachment or by I 2 C programming.
POWER SAVE MODE
The Power Save mode is contributing only for the
accessory of Audio Type 1 or TTY. The 34827 enters into
MC34827
Analog Integrated Circuit Device Data
16
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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