参数资料
| 型号： | AS1923A-BSTT-O |
| 厂商： | ams |
| 文件页数： | 2/17页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR QUAD OPEN SOT23-6 |
| 标准包装： | 1 |
| 类型： | 多压监控器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 120 ms |
| 电压 - 阀值： | 2.93V，4.38V，可调，-4.38V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-23-6 |
| 包装： | 标准包装 |
| 其它名称： | AS1923A-BSTT-ODKR |
Data sheet
AS1923
Q u a d - Vo l ta g e M i c r o p r o c e s s o r S u p e r v i s o r y C i r c u i t
1 General Description
The AS1923 microprocessor supervisory circuit was designed to
monitor up to four system supply voltages without the need for exter-
nal components, and asserts a single reset if any of the monitored
supply voltages drops below its reset threshold.
The AS1923 features an active-low reset output that is asserted
when any of the 4 monitored voltages are below their respective
reset threshold. The reset output is open-drain with a weak internal
pullup (10μA) to IN2. Reset remains low for a specified reset timeout
period (120ms min) after all voltages have stabilized. The output is
valid as long as the IN1 or IN2 input voltage remains >1V.
Minimal external component requirements, small size, and wide tem-
perature range (-40 to +85°C) greatly improves reliability compared
to individual supervisory circuits or discrete components.
A wide range of factory-trimmed threshold voltages are available to
accommodate many different supply voltages/tolerances with mini-
mal external component requirements.
Factory-trimmed options are available for monitoring +5.0, +3.3,
+3.0, +2.5, +1.8, and -5.0V supplies with -5% and/or -10% toler-
ances. The device is also available with one or two user-adjustable
threshold options (via external resistor-divider network) if non-stan-
dard voltage thresholds are required.
The AS1923 is available in an 6-pin SOT23 package.
2 Key Features
Simultaneous Quad-Voltage Monitoring
Precision Factory-Trimmed Reset Threshold Options: +5.0,
+3.3, +3.0, +2.5, +1.8, and -5.0V
User-Adjustable Voltage Monitoring Threshold Options
Low Supply Current: 55μA
Open-Drain – AS1923A
10μA Current Source Pullup – AS1923B
Reset Timeout Period: 120ms
RESET Valid to IN1 = 1V or IN2 = 1V
Immune to Fast IN x Transients
External Components not Required
Guaranteed Performance: Operating Temperature Range = -40
to +85oC
6-pin SOT23 Package
3 Applications
The device is ideal for portable and battery-powered systems,
embedded controllers, intelligent instruments, automotive systems,
critical CPU monitoring, and any multi-supply application.
Figure 1. AS1923 - Typical Application
Monitoring
Voltage 1
Monitoring
4
IN1
5
Voltage 2
Monitoring
IN2
6
AS1923
3
RESETN
RESETN
CPU
Voltage 3
Monitoring
Voltage 4
IN3
1
IN4
GND
2
Revision 1.01
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相关代理商/技术参数 |
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|---|---|
| AS1923A-BSTT-x | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Quad-Voltage Microprocessor Supervisory Circuit |
| AS1923B-BSTT-x | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Quad-Voltage Microprocessor Supervisory Circuit |
| AS1925 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Ultra-Low Voltage Microprocessor Supervisory Circuit with Manual Reset |
| AS1925-BSTT | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Ultra-Low Voltage Microprocessor Supervisory Circuit with Manual Reset |
| AS1925BSTTD07 | 制造商:ams 功能描述:IC MPU SUPERVISOR 12 uA 1.8V 5-SOT-2 制造商:ams 功能描述:T&R / SOT23-5 |
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