DS1831

更新时间： 2024-01-08 08:46:42

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
14页	199K
描述
Multisupply Micromonitor

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中文翻译

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技术参数
数据手册

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DS1831 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, SOP16,.25	针数：	16
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	1.33	其他特性：	POWER-ON-RESET
可调阈值：	NO	模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：	R-PDSO-G16	JESD-609代码：	e3
长度：	9.9 mm	湿度敏感等级：	1
信道数量：	4	功能数量：	1
端子数量：	16	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：	SOP	封装等效代码：	SOP16,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	电源：	1/5.5 V
认证状态：	Not Qualified	座面最大高度：	1.75 mm
子类别：	Power Management Circuits	最大供电电流 (Isup)：	0.1 mA
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	1 V
标称供电电压 (Vsup)：	3.3 V	表面贴装：	YES
温度等级：	INDUSTRIAL	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：	NOT SPECIFIED
宽度：	3.9 mm	Base Number Matches：	1

DS1831 数据手册

DS1831/A/B

OUTPUT VALID CONDITIONS

The DS1831 can maintain valid outputs as long as one input remains above 1.0V. Accurate voltage

monitoring additionally requires that either the 3.3V IN or 5V IN input be above 1.5V. If this condition is

not met and at least one of the supply inputs are at or above 1.0V all outputs are maintained in the active

condition. The DS1831 requires pull-up resistors on the outputs to maintain a valid output. The value of

the pull up resistor is not critical in most cases but must be set low enough to pull the output to a high

state. A common pull-up resistor value used is 10kꢀ (see Figure 7).

APPLICATION DIAGRAM—OPEN DRAIN OUTPUTS Figure 7

3.3V Supply

5V Supply

IN_5V

IN_3.3v

10 kꢀ

10 K

ꢀ

RST_3.3V

RST_5V

DS1831

TOL_5V

TD_5V

TOL_3.3V

TD_3.3V

PBRST_5V

PBRST_3.3V

GND

NOTE: If outputs are at different voltages the outputs can not be connected to form a wired AND.

OPERATION—NON-MASKABLE INTERRUPT

The DS1831 has two referenced comparator (DS1831A has only one referenced comparator) that can be

used to monitor upstream voltages or other system specific voltages. Each comparator is referenced to the

1.25V internal band gap reference and controls an open-drain output. When a voltage being monitored

decays to the voltage sense point, the DS1831 pulses the NMI output to the active state for a minimum

10µs. The comparator detection circuitry also has built-in hysteresis of 100µV. The supply must be below

the voltage sense point for approximately 2µs before a low NMI will be generated. In this way, power

supply noise is minimized in the monitoring function, reducing false interrupts. See Figure 8 for the non-

maskable timing diagram.

Versatile trip voltages can be configured by the use of an external resistor divider to divide the voltage at

a sense point to the 1.25V trip levels of the referenced comparators. See Figure 9 for an example circuit

diagram and sample equations. The equations demonstrate a design process to determine the resistor

values to use.

Connecting one or both NMI outputs to one of the reset specific PBRST s allows the non-maskable

interrupt to generate an automatic reset for the reset time period when an out-of-tolerance condition

occurs in a monitored supply. An example is shown in Figure 9.

7 of 14

1...4 5 678 9 10...14

中文翻译

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与DS1831相关器件

型号	品牌	描述	获取价格	数据表
DS1831/A/B	ETC	Multisupply Micromonitor	获取价格
DS1831/T&R	DALLAS	Power Supply Support Circuit, Fixed, 4 Channel, PDIP16, 0.300 INCH, DIP-16	获取价格
DS1831+	MAXIM	Power Supply Support Circuit, Fixed, 4 Channel, PDIP16, 0.300 INCH, DIP-16	获取价格
DS1831A	MAXIM	Multisupply Micromonitor	获取价格
DS1831A	ROCHESTER	4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16, 0.300 INCH, PLASTIC, DIP-16	获取价格
DS1831A	ADI	多电源MicroMonitor?	获取价格

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