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AS1834AEMA

更新时间： 2024-01-25 19:42:55
品牌 Logo 应用领域
PULSECORE 光电二极管
页数 文件大小 规格书
10页 260K
描述
Power Supply Support Circuit, Fixed, 2 Channel, PDSO8, MICROSO-8

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AS1834AEMA 技术参数

生命周期：Obsolete包装说明：MICROSO-8
Reach Compliance Code：unknown风险等级：5.4
可调阈值：NO模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：S-PDSO-G8JESD-609代码：e0
长度：3 mm信道数量：2
功能数量：1端子数量：8
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：TSSOP
封装形状：SQUARE封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1.1 mm最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：1.2 V标称供电电压 (Vsup)：2.7 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：TIN LEAD端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3 mm
Base Number Matches：1

AS1834AEMA 数据手册

 浏览型号AS1834AEMA的Datasheet PDF文件第1页浏览型号AS1834AEMA的Datasheet PDF文件第2页浏览型号AS1834AEMA的Datasheet PDF文件第3页浏览型号AS1834AEMA的Datasheet PDF文件第5页浏览型号AS1834AEMA的Datasheet PDF文件第6页浏览型号AS1834AEMA的Datasheet PDF文件第7页 
October 2003  
ASM1834A/D  
rev 1.0  
Manual Reset Operation  
Reset Output Signal  
Push-button switch input, PBRST, allows the user to override  
the internal trip point detection circuits and issue reset  
signals. The pushbutton input is debounced and is pulled  
HIGH through an internal 40kΩ resistor.  
Reset output signals are valid as long as either voltage at  
5VIN or 3.3VIN is above 1.2V. In addition, the ASM1834 has  
push-pull outputs that can remain valid below a 1.2V input  
level. To sink current below 1.2V, a resistor should be  
connected from the reset output to ground. This resistor  
guarantees a valid reset signal down to 0V. A 100kΩ value is  
suggested.  
When at least one of the reset outputs is not asserted, a push  
button initiated reset signal can be issued by holding PBRST  
LOW for at least 2ms. When PBRST is held LOW, both resets  
become active and remain active for approximately 350ms  
after PBRST returns HIGH. (See figures 3 and 4).  
The AS1834A open drain reset outputs require pull-up  
resistors and must be low enough in value to pull the output  
into a HIGH state. Resistor value is not critical in most  
applications and a value of 10kΩ is suggested. (See Figures  
5 and 6).  
3.3V  
5V  
ASM1834  
The ASM1834A open drain reset outputs can be connected  
to the same potential through a single pull-up resistor. In this  
configuration a failure on either supply will generate an active  
LOW reset. If the inputs are pulled-up to different voltages,  
the reset outputs (pin 2 and pin 7) cannot be connected to  
form a wired “AND”(see figure 7).  
8
1
3.3VIN  
5VIN  
7
6
5
2
5V RESET 3.3V RESET  
3
4
5VTOL  
GND  
3.3VTOL  
PBRST  
µP  
Input  
RESET  
Figure 3: Pushbutton Reset  
PBRST  
100kΩ  
t
PB  
Figure 5: ASM1834 RESET Valid to 0V  
V
IH  
t
PDLY  
V
IL  
3.3V  
5V  
t
ASM1834  
RST  
8
1
3.3VIN  
5VIN  
RESET  
RESET  
10kΩ  
VOH  
VOL  
10kΩ  
7
6
5
2
5V RESET 3.3V RESET  
3
4
5VTOL  
GND  
3.3VTOL  
PBRST  
Figure 4: Timing Diagram: Pushbutton Reset  
Figure 6: ASM1834A Open Drain Output Pull-Up Resistor  
4 of 10  
Dual 5V and 3.3V µP Power Supply Supervisor with Manual Reset  
Notice: The information in this document is subject to change without notice  
1234567...10

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