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AP2281-3WG-7 PDF预览

AP2281-3WG-7

更新时间: 2024-10-28 08:31:47
品牌 Logo 应用领域
美台 - DIODES 开关电信集成电路电信电路光电二极管
页数 文件大小 规格书
13页 279K
描述
Single Slew Rate Controlled Load Switch

AP2281-3WG-7 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOT
包装说明:LSSOP,针数:6
Reach Compliance Code:compliantHTS代码:8542.39.00.01
Factory Lead Time:19 weeks风险等级:1.57
JESD-30 代码:R-PDSO-G6JESD-609代码:e3
长度:3 mm湿度敏感等级:3
功能数量:1端子数量:6
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:LSSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.45 mm标称供电电压:5 V
表面贴装:YES电信集成电路类型:TELECOM CIRCUIT
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.95 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:1.6 mmBase Number Matches:1

AP2281-3WG-7 数据手册

 浏览型号AP2281-3WG-7的Datasheet PDF文件第6页浏览型号AP2281-3WG-7的Datasheet PDF文件第7页浏览型号AP2281-3WG-7的Datasheet PDF文件第8页浏览型号AP2281-3WG-7的Datasheet PDF文件第10页浏览型号AP2281-3WG-7的Datasheet PDF文件第11页浏览型号AP2281-3WG-7的Datasheet PDF文件第12页 
AP2281  
Single Slew Rate Programmable Load Switch  
Application Note  
Power Dissipation  
Input Capacitor  
The device power dissipation and proper sizing of the  
thermal plane is critical to avoid thermal shutdown and  
ensure reliable operation. Power dissipation of the  
device depends on input voltage and load conditions and  
can be calculated by:  
A 1μF capacitor is recommended to connect between IN  
and GND pins to decouple input power supply glitch and  
noise. The input capacitor has no specific type or  
ESR (Equivalent Series Resistance) requirement.  
However, for higher current application, ceramic  
capacitors are recommended due to their capability to  
withstand input current surges from low impedance  
sources, such as batteries in portable applications. This  
input capacitor must be located as close as possible to  
the device to assure input stability and less noise. For  
PCB layout, a wide copper trace is required for both  
IN and GND.  
PD = IOUT 2 xRDSON  
(1)  
However, the maximum power dissipation that can be  
handled by the device depends on the maximum  
junction to ambient thermal resistance, maximum  
ambient temperature, and maximum device junction  
temperature, which can be approximated by the  
equation below:  
Output Capacitor  
A 0.1μF capacitor is recommended to connect between  
OUT and GND pins to stabilize and accommodate load  
transient condition. The output capacitor has no specific  
type or ESR requirement. The amount of the  
capacitance may be increased without limit. For  
PCB layout, the output capacitor must be placed as  
close as possible to OUT and GND pins, and keep the  
traces as short as possible.  
(+125°C TA )  
PD (max@TA ) =  
(2)  
θJA  
For example at VIN = 5V, the typical RDSON = 80m. For  
IOUT = 2A, the maximum power dissipation calculated  
using equation (1) is PD = 0.32W. Based on SOT26  
θJA = 153°C/W and equation (2), the calculated junction  
temperature rise from ambient is approximately 49°C.  
Since the maximum junction temperature is 125°C, the  
operating ambient temperature must be kept below 76°C  
to safely operate the device.  
ENABLE/SHUTDOWN Operation  
The AP2281 is turned on by setting the EN pin high, and  
is turned off by pulling it low. To ensure proper operation,  
the signal source used to drive the EN pin must be able  
to swing above and below the specified turn-on/off  
voltage thresholds listed in the Electrical Characteristics  
section under VIL and VIH.  
On the other hand, at TA = 85°C and VIN = 5V, the  
calculated maximum power dissipation from equation (2)  
is approximately PDmax = 0.26W. Hence the safe  
operating maximum continuous current is 1.81A. For  
other application conditions, the users should  
recalculate the device maximum power dissipation  
based on the operating conditions.  
DISCHARGE Operation  
The AP2281-3 offers discharge option that helps to  
discharge the output charge when disabled.  
AP2281 Rev. 4  
9 of 13  
www.diodes.com  
FEBRUARY 2009  
© Diodes Incorporated  

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