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参数资料
| 型号： | AT73C224-A |
| 厂商： | Atmel |
| 文件页数： | 1/75页 |
| 文件大小： | 0K |
| 描述： | IC PWR MGMT ANALOG PMAAC 32QFN |
| 标准包装： | 490 |
| 应用： | 手持/移动设备 |
| 电源电压： | 2.8 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN（5x5） |
| 包装： | 托盘 |
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Features
? DC/DC Step-up Converter (BOOST) 3.3V to 5.2V, 1A, up to 90% Efficiency. Can be Used
as BUCK/BOOST in SEPIC Configuration
? DC/DC Step-down (BUCK) Synchronous Converter 0.9V to 3.4V, 500mA, up to 90%
Efficiency, Pulse Skipping Capabilities for High Efficiency at Light Load Currents
? Two Low-Drop-Out Regulators 1.3V, 1.5V to 1.8V, 2.5V to 2.8V (100 mV Step), 3.3V,
200 mA Maximum Load
? Ultra-low Power Real-time Clock (RTC) and Backup Battery Management
– 2.6V RTC LDO for Backup Battery Charging
– 32 kHz Crystal RTC Oscillator (1 μA)
Power
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– RTC Circuit for Time and Date Information
Activation of the Power Management Modules via Dedicated Enable Pin
Automatic Start-up Sequences, POK Signal Indicating When Start-up is Completed
Activation and Control of the Power Management Modules in Dynamic Mode (via SPI or
TWI) or in Static Mode (On/Off of the Four Power Supplies)
ITB Signal Indicating Short-circuits in DC/DC Converters
Very Low Quiescent Current
Minimum External Components Count
Supply: from 2.8V to 5.25V (typ: Li-Ion Battery 3V to 4.2V)
Available in a 32-pin 5x5 QFN Package
Applications Include:
Management
and Analog
Companions
(PMAAC)
AT73C224-A
– WLAN Portable Devices
– Multimedia Devices
– Portable Music Players
1. Description
The AT73C224-x is a family of ultra low cost Power Management Unit, available in a
small outline QFN 5x5mm package.
The AT73C224-x family is optimized for portable applications, typically powered by a
Li-Ion battery. The AT73C224-x device is also suitable to operate from a standard
3.3V to 5.25V voltage rail. It includes four power supplies and a very low power Real-
time Clock (RTC). In normal mode (main battery present), the backup battery is
recharged through a 2.6V RTC LDO.
The AT73C224-x series offer different automatic start-up sequences (with varying
orders of power-on and specific default output values) and different soft management
modes: dynamic (via SPI or TWI) with register access or static, with access to power
on/off of the four power supplies.
Each AT73C224-x device is equipped with a very low power bandgap reference, low
power 32 kHz and 1 MHz oscillators and an internal LDO used to generate the internal
supply (VINT) equal to 2.8V. Auxiliary cells, such as a power-on reset (POR) and a
voltage monitor are used to control the system power-on (battery plugged in) and
power-off (battery unplugged).
The four power supplies are named: BOOST1, BUCK2, LDO3 and LDO4.
AT73C224-B
AT73C224-C
AT73C224-D
AT73C224-E
AT73C224-F
AT73C224-G
AT73C224-H
4x Channels
Power Supply:
DC/DC BOOST
DC/DC BUCK
2x LDOs
RTC
6266A–PMAAC–08-Sep-08
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT73C224-B | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Power Management and Analog Companions (PMAAC) |
| AT73C224-C | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Power Management and Analog Companions (PMAAC) |
| AT73C224-D | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Power Management and Analog Companions (PMAAC) |
| AT73C224-E | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Power Management and Analog Companions (PMAAC) |
| AT73C224-EK1 | 功能描述:电源管理IC开发工具 AT73C224 EVALUATION KIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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