Datasheet > DS1831B/T&R

DS1831B/T&R

更新时间： 2024-02-02 21:08:29

品牌	Logo	应用领域
美信 - MAXIM		光电二极管
页数	文件大小	规格书
16页	253K
描述
Power Supply Support Circuit, Fixed, 4 Channel, PDIP16, 0.300 INCH, PLASTIC, DIP-16

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

DS1831B/T&R 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Active	零件包装代码：	DIP
包装说明：	DIP,	针数：	16
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.29
Base Number Matches：	1

DS1831B/T&R 数据手册

DS1831/A/B

OPERATION—POWER MONITOR

The DS1831 provides the functions of detecting out-of-tolerance conditions on a 3.3V (or 3V) and 5V

power supply and warning a processor-based system of impending power failure. When an input is

detected as out-of-tolerance on either voltage input the RST for that supply will be forced active low.

When that input returns to a valid state the associated RST will remain active for the time delay selected

with the associated TD input and then return to an inactive state until the next input out-of-tolerance

condition.

On power-up both resets are kept active for the selected reset time after the associated power supply input

has reached the selected tolerance. This allows the power supply and system power to stabilize before

RST is released.

All internal operating current for the DS1831 will be supplied by either the IN_3.3Vor IN_5Vinput which

ever has the highest voltage level.

OPERATION—TOLERANCE SELECT

The DS1831 provides two TOL inputs for individual customization of the DS1831 to specific application

requirements. If the TOL for the 5V supply is tied to the 5V input a 5% tolerance is selected. If the TOL

is connected to ground a 10% tolerance is selected or if it is left unconnected a 15% tolerance is selected.

If the TOL for the 3.3V supply is tied to the 3.3V input a 5% tolerance is selected, a 10% tolerance is

selected if it is connected to ground, and a 20% tolerance is selected if the input is left unconnected.

These tolerance conditions are set at power up and can only be changed by power cycling the device.

OPERATION—RESET TIME-DELAY SELECT

The DS1831 provides two TD inputs for individual customization of reset time-delays and an additional

one for the DS1831A watchdog. TD inputs select time delays for the IN_5Vand IN_3.3Vresets outputs and

the Watchdog on the DS1831A. The reset time delays are shown in Table 1. These allow the selection of

minimum delays of 10ms, 100ms, and 1000ms.

Wiring an individual reset output to the push-button input of the other voltage reset allows custom reset

timings or allows for the sequencing of the reset outputs. See Figure 2.

These time-delays are set at power-up and cannot be changed after the device reaches an in-tolerance

condition.

TD INPUTS/RESET AND WATCHDOG TIME-DELAYS Table 1

RESET TIME-DELAY

GND

Float

V_CC

MIN

10ms

100ms

1000ms

TYP

16ms

MAX

20ms

200ms

2000ms

160ms

1600ms

3 of 14

1 234 5 6 7...16

下载PDF

与DS1831B/T&R相关器件

型号	品牌	描述	获取价格	数据表
DS1831BS	MAXIM	Multisupply Micromonitor	获取价格
DS1831BS	ROCHESTER	4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, 0.150 INCH, SOIC-16	获取价格
DS1831BS/T&R	MAXIM	Power Supply Support Circuit, Fixed, 4 Channel, PDSO16, 0.150 INCH, SOIC-16	获取价格
DS1831BS+	MAXIM	Power Supply Support Circuit, Fixed, 4 Channel, PDSO16, 0.150 INCH, SOIC-16	获取价格
DS1831BS+T&R	MAXIM	Power Supply Support Circuit, Fixed, 4 Channel, PDSO16, 0.150 INCH, SOIC-16	获取价格
DS1831C	DALLAS	3.3V/2.5V Multi-Supply MicroMonitor	获取价格