参数资料
| 型号： | AT73C209-EK |
| 厂商： | Atmel |
| 文件页数： | 46/63页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AT73C209 |
| 标准包装： | 1 |
| 系列： | PMAAC™ |
| 主要目的： | 电源管理，专用型: 手机 |
| 已用 IC / 零件： | AT73C209 |
| 已供物品： | 板，CD，文档 |
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12. Power On/Off Procedure
There are two different inputs for supplying AT73C209. The first one, is to apply a cell on IN pin.
The DC/DC converter should be activated by the ONOFF pin. The second one, is to apply a
USB_Voltage on USB pin. Each power_up is described below.
12 , 8 ms = 256 × ----------------------------------------------- < Reset – Time < 256 × ---------------------------------------------- = 51 , 2 ms
12.1
46
DC/DC Power On/Off Operation
The Power-On of the DC/DC boost converter is activated by a push_button. The Power-Off of
the DC/DC boost converter is controlled by the micro-controller MCU using 1 signal register.
? The DC/DC boost converter is enabled with the ONOFF signal (Push_button activation). If
ONOFF is high, the FB output voltage of the DC/DC converter begins to rise. The load
resistor in this start-up phase must be higher than 10 KOhms. Once FB reaches the 2.4V
threshold voltage, a DC/DC internal low-quiescent voltage supervisor sets the DC/DC
internal STARTV signal to high (FB level). Then, the DC/DC output voltage FB rises to 3.3V.
? The DC/DC boost converter is kept enabled by the micro-controller by setting the UPONOFF
bit to high level (register 0x15, bit # 0). Then, the ONOFF signal can be released to 0.
? Once FB reaches 2.4V threshold, a counter is started and after 256 cycles of internal
oscillator, a reset signal (high level) is generated on RSTB pin. The reset time should be
calculated as follows: (5kHz < F oscillator < 20kHz
)
1 1 ·
f OSCILLATOR – MAX f OSCILLATOR – MIN
? The off mode is entered as soon as the micro-controller resets the UPONOFF bit to 0
(provided ONOFF=0). Then, the DC/DC boost converter is disabled
AT73C209
6365A–PMAAC–12-Mar-08
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT73C211 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Power Management |
| AT73C211-CI | 功能描述:其他电源管理 NGD MONOLITHIC NUMERIC IC RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| AT73C211-EK | 功能描述:开发板和工具包 - ARM AT73C211 EVALUATION BOARD RoHS:否 制造商:Arduino 产品:Development Boards 工具用于评估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口类型:DAC, ICSP, JTAG, UART, USB 工作电源电压:3.3 V |
| AT73C211-ZI | 功能描述:IC POWER MANAGEMENT 48FBGA 制造商:microchip technology 系列:- 包装:带卷（TR） 零件状态:停產 应用:电源管理 - 手持设备 电流 - 电源:- 电压 - 电源:- 工作温度:-20°C ~ 85°C 封装/外壳:48-FBGA 基本零件编号:AT73C211 标准包装:2,500 |
| AT73C212 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Power Management for Mobiles (PM) |
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