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AP2191SG-13 PDF预览

AP2191SG-13

更新时间： 2024-02-07 17:02:21
品牌 Logo 应用领域
美台 - DIODES 驱动光电二极管接口集成电路驱动器
页数 文件大小 规格书
17页 1155K
描述
Buffer/Inverter Based Peripheral Driver, 1 Driver, 2A, PDSO8, GREEN, SOP-8

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AP2191SG-13 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：SOIC
包装说明：SOP, SOP8,.25针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：18 weeks
风险等级：1.53内置保护：TRANSIENT; OVER CURRENT; UNDER VOLTAGE
驱动器位数：1接口集成电路类型：BUFFER OR INVERTER BASED PERIPHERAL DRIVER
JESD-30 代码：R-PDSO-G8JESD-609代码：e3
长度：4.9 mm湿度敏感等级：3
功能数量：1端子数量：8
最高工作温度：70 °C最低工作温度：
输出电流流向：SINK最大输出电流：1.5 A
标称输出峰值电流：2 A封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260电源：3/5 V
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Peripheral Drivers最大供电电压：5.5 V
最小供电电压：2.7 V标称供电电压：5 V
表面贴装：YES温度等级：COMMERCIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：3.9 mm
Base Number Matches：1

AP2191SG-13 数据手册

 浏览型号AP2191SG-13的Datasheet PDF文件第6页浏览型号AP2191SG-13的Datasheet PDF文件第7页浏览型号AP2191SG-13的Datasheet PDF文件第8页浏览型号AP2191SG-13的Datasheet PDF文件第10页浏览型号AP2191SG-13的Datasheet PDF文件第11页浏览型号AP2191SG-13的Datasheet PDF文件第12页 
AP2181/ AP2191  
Application Information  
Power Supply Considerations  
A 0.01-µF to 0.1-µF X7R or X5R ceramic bypass capacitor between IN and GND, close to the device, is recommended. Placing a high-value  
electrolytic capacitor on the input (10-µF minimum) and output pin(s) is recommended when the output load is heavy. This precaution reduces  
power-supply transients that may cause ringing on the input. Additionally, bypassing the output with a 0.01-µF to 0.1-µF ceramic capacitor improves  
the immunity of the device to short-circuit transients.  
Over-Current and Short Circuit Protection  
An internal sensing FET is employed to check for over-current conditions. Unlike current-sense resistors, sense FETs do not increase the series  
resistance of the current path. When an overcurrent condition is detected, the device maintains a constant output current and reduces the output  
voltage accordingly. Complete shutdown occurs only if the fault stays long enough to activate thermal limiting.  
Three possible overload conditions can occur. In the first condition, the output has been shorted to GND before the device is enabled or before VIN  
has been applied. The AP2181/AP2191 senses the short circuit and immediately clamps output current to a certain safe level namely ILIMIT  
.
In the second condition, an output short or an overload occurs while the device is enabled. At the instance the overload occurs, higher current may  
flow for a very short period of time before the current limit function can react. After the current limit function has tripped (reached the over-current  
trip threshold), the device switches into current limiting mode and the current is clamped at ILIMIT  
.
In the third condition, the load has been gradually increased beyond the recommended operating current. The current is permitted to rise until the  
current-limit threshold (ITRIG) is reached or until the thermal limit of the device is exceeded. The AP2181/AP2191 is capable of delivering current up  
to the current-limit threshold without damaging the device. Once the threshold has been reached, the device switches into its current limiting mode  
and is set at ILIMIT  
.
Note that when the output has been shorted to GND at extremely low temperature (< -30°C), a minimum 120-µF electrolytic capacitor on the output  
pin is recommended. A correct capacitor type with capacitor voltage rating and temperature characteristics must be properly chosen so that  
capacitance value does not drop too low at the extremely low temperature operation. A recommended capacitor should have temperature  
characteristics of less than 10% variation of capacitance change when operated at extremely low temp. Our recommended aluminum electrolytic  
capacitor type is Panasonic FC series.  
FLG Response  
When an over-current or over-temperature shutdown condition is encountered, the FLG open-drain output goes active low after a nominal 7-ms  
deglitch timeout. The FLG output remains low until both over-current and over-temperature conditions are removed. Connecting a heavy capacitive  
load to the output of the device can cause a momentary over-current condition, which does not trigger the FLG due to the 7-ms deglitch timeout.  
The AP2181/AP2191 is designed to eliminate false over-current reporting without the need of external components to remove unwanted pulses.  
Power Dissipation and Junction Temperature  
The low on-resistance of the internal MOSFET allows the small surface-mount packages to pass large current. Using the maximum operating  
ambient temperature (TA) and RDS(ON), the power dissipation can be calculated by:  
PD = RDS(ON)× I2  
Finally, calculate the junction temperature:  
TJ = PD x RθJA + TA  
Where:  
TA = Ambient temperature °C  
RθJA = Thermal resistance  
PD = Total power dissipation  
Thermal Protection  
Thermal protection prevents the IC from damage when heavy-overload or short-circuit faults are present for extended periods of time. The  
AP2181/AP2191 implements a thermal sensing to monitor the operating junction temperature of the power distribution switch. Once the die  
temperature rises to approximately 140°C due to excessive power dissipation in an over-current or short-circuit condition the internal thermal sense  
circuitry turns the power switch off, thus preventing the power switch from damage. Hysteresis is built into the thermal sense circuit allowing the  
device to cool down approximately 25°C before the switch turns back on. The switch continues to cycle in this manner until the load fault or input  
power is removed. The FLG open-drain output is asserted when an over-temperature shutdown or over-current occurs with 7-ms deglitch.  
9 of 17  
www.diodes.com  
March 2015  
© Diodes Incorporated  
AP2181/ AP2191  
Document number: DS31563 Rev. 8 - 2  
1...6789101112...17

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