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AAT3528ICX-3.08-200-T1

更新时间： 2024-02-28 22:30:37
品牌 Logo 应用领域
ANALOGICTECH 光电二极管监控
页数 文件大小 规格书
9页 94K
描述
MicroPower⑩ Supervisory Circuit with Manual Reset

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AAT3528ICX-3.08-200-T1 技术参数

是否Rohs认证： 符合生命周期：Transferred
包装说明：, TO-253Reach Compliance Code：unknown
风险等级：5.72可调阈值：NO
湿度敏感等级：3端子数量：4
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装等效代码：TO-253
电源：1.2/5.5 V认证状态：Not Qualified
子类别：Power Management Circuits最大供电电流 (Isup)：0.003 mA
表面贴装：YES温度等级：INDUSTRIAL
阈值电压标称：+3.08VBase Number Matches：1

AAT3528ICX-3.08-200-T1 数据手册

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AAT3526/7/8  
MicroPower™ Supervisory Circuit  
with Manual Reset  
MR input is internally debounced which allows the  
use of a mechanical switch. It should be a normally-  
open momentary switch connected from MR to  
GND. Additionally, the MR pin can be driven from  
TTL, CMOS, or open drain logic outputs.  
Applications Information  
Reset Output Options  
The AAT3528 has an active low open drain output  
and the AAT3526/7 have a push-pull output. The  
AAT3528 may be used in multiple voltage systems  
with an external pull-up resistor. This allows the  
AAT3528 to interface to microprocessors with high-  
er supply voltages up to 5.5V (Figure 2). In the event  
of a power-down or brown-out condition, the reset  
signal remains valid until the VCC drops below 1.2V.  
To ensure validity down to ground, an external  
100kΩ resistor should be connected between the  
RESET output and GND.  
Supply Voltage Transient Behavior  
In some cases, fast negative transients of short  
duration can appear on the VCC power supply. The  
AAT3526/7/8 series devices provide some immunity  
to line transients which can generate invalid reset  
pulses. Figure 1 shows typical behavior to short  
duration pulses versus RESET comparator over-  
drive. As shown in the Maximum Transient Duration  
vs. Reset Threshold Overdrive graph, when the tran-  
sient voltage becomes larger, the time allowed  
before asserting a reset becomes shorter (e.g., typ-  
ically a transient of 100mV below the reset threshold  
would have to present for more than 50µs to cause  
a reset). Immunity can be increased by the addition  
of a small bypass capacitor of 0.1µF connected as  
close to the VCC pin as possible.  
Manual Reset Input  
A logic low signal on MR asserts a reset condition.  
Reset continues to be asserted as long as MR is low  
and for a minimum of 150ms after MR returns high.  
This input is internally pulled up to VCC via a 65kΩ  
resistor, so leaving the pin unconnected is accept-  
able if the manual reset function is not needed. The  
VCC  
VCC  
VCC  
*
100k  
(nominal)  
AAT3526  
RESET  
µP  
RESET  
(RESET)  
MR  
AAT3527  
AAT3528  
0.1µF  
INPUT  
GND  
GND  
*AAT3528 Only  
Figure 2: Using Recommended Bypass Capacitor.  
+3.3V  
+5.0V  
VCC  
VCC  
100k  
AAT3528  
5V  
System  
RESET  
INPUT  
MR  
RESET  
GND  
GND  
Figure 3: Using AAT3528 Open Drain Output with Multiple Supplies.  
3526.2006.03.1.6  
7
1...456789

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