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MAX6830RFUT

更新时间： 2024-02-29 14:36:34
品牌 Logo 应用领域
美信 - MAXIM 信息通信管理光电二极管
页数 文件大小 规格书
12页 590K
描述
Power Supply Management Circuit, BICMOS, PDSO6,

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MAX6830RFUT 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Contact ManufacturerReach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.8模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码：R-PDSO-G6湿度敏感等级：1
端子数量：6最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：TSOP封装等效代码：TSOP6,.11,37
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE
峰值回流温度（摄氏度）：225电源：3/3.3 V
认证状态：Not Qualified子类别：Power Management Circuits
表面贴装：YES技术：BICMOS
温度等级：AUTOMOTIVE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：NOT SPECIFIED

MAX6830RFUT 数据手册

 浏览型号MAX6830RFUT的Datasheet PDF文件第6页浏览型号MAX6830RFUT的Datasheet PDF文件第7页浏览型号MAX6830RFUT的Datasheet PDF文件第8页浏览型号MAX6830RFUT的Datasheet PDF文件第10页浏览型号MAX6830RFUT的Datasheet PDF文件第11页浏览型号MAX6830RFUT的Datasheet PDF文件第12页 
Dual Ultra-Low-Voltage SOT23 µP Supervisors  
with Manual Reset and Watchdog Timer  
V
CC  
t
V
CC  
V
CC  
RST  
MAX6828  
MAX6831  
RESET*  
WDI  
RESET  
RESET  
µP  
t
RP  
t
t
RP  
WD  
RESET  
GENERATOR  
GND  
GND  
*RESET IS THE INVERSE OF RESET.  
Figure 6. Interfacing Open-Drain RESET to µPs with  
Bidirectional Reset I/O  
Figure 4. Watchdog Timing Relationship  
the maximum allowable leakage current is 10µA and the  
maximum allowable load capacitance is 200pF.  
V
MONITOR  
MAX6826  
MAX6827  
MAX6828  
Adjustable Reset Thresholds  
The MAX6826/MAX6827/MAX6828 provide a user  
adjustable input to monitor a second voltage. The  
threshold voltage at RSTIN is typically 0.63V. To moni-  
tor a voltage higher than 0.63V, connect a resistor-  
divider to the circuit as shown in Figure 5. The  
R1  
R2  
RSTIN  
threshold at V  
is:  
MONITOR  
V
≥ V  
RSTIN  
CC  
R1 + R2  
V
= 0.63V  
MONITOR_TRIP  
R2  
Figure 5. Monitoring a Voltage  
outputs. Connect a normally open momentary switch  
from MR to GND to create a manual-reset function;  
external debounce circuitry is not required. If MR is dri-  
ven from long cables or the device is used in a noisy  
environment, connect a 0.1µF capacitor from MR to  
GND to provide additional noise immunity.  
Note that RSTIN is powered by V , and its voltage  
CC  
.
must therefore remain lower than V  
CC  
Applications Information  
Watchdog Input Current  
The WDI inputs are internally driven through a buffer  
and series resistor from the watchdog timer (Figure 1).  
When WDI is left unconnected, the watchdog timer is  
serviced within the watchdog timeout period by a low-  
high-low pulse from the counter chain. For minimum  
watchdog input current (minimum overall power con-  
sumption), leave WDI low for the majority of the watch-  
dog timeout period, pulsing it low-high-low once within  
the first 7/8 of the watchdog timeout period to reset the  
watchdog timer. If WDI is externally driven high for the  
majority of the timeout period, up to 160µA can flow into  
WDI.  
Watchdog Input  
The watchdog circuit monitors the µP’s activity. If the  
µP does not toggle (low to high or high to low) the  
watchdog input (WDI) within the watchdog timeout peri-  
od (1.6s nominal), reset asserts for the reset timeout  
period. The internal 1.6s timer can be cleared by either  
a reset pulse or by toggling WDI. The WDI can detect  
pulses as short as 50ns. While reset is asserted, the  
timer remains cleared and does not count. As soon as  
reset is released, the timer starts counting (Figure 4).  
Disable the watchdog function by leaving WDI uncon-  
nected or by three-stating the driver connected to WDI.  
The watchdog input is internally driven low during the  
first 7/8 of the watchdog timeout period and high for the  
last 1/8 of the watchdog timeout period. When WDI is left  
unconnected, this internal driver clears the 1.6s timer  
every 1.4s. When WDI is three-stated or unconnected,  
Interfacing to µPs  
with Bidirectional Reset Pins  
Since the RESET output on the MAX6828/MAX6831  
is open drain, these devices interface easily with µPs  
that have bidirectional reset pins, such as the Motorola  
68HC11. Connecting the µP supervisor’s RESET output  
_______________________________________________________________________________________  
9
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