Datasheet > AS1905C31

AS1905C31

更新时间： 2024-02-11 13:10:03

品牌	Logo	应用领域
艾迈斯 - AMSCO		监控
页数	文件大小	规格书
9页	88K
描述
Ultra Low-Power uP Supervisory Circuit

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AS1905C31 数据手册

austriamicrosystems

Data Sheet

AS1904, AS1905, AS1906

Ultra Low-Power µP Supervisory Circuit

1 General Description

The AS1904/5/6 family is an ultra low-power supervisory

circuit device.

2 Key Features

Low 150nA (typical) Supply Current

Precision Monitoring of 2.5-, 3-, and 3.3V-Power

Supplies

The device can be used to monitor the supply voltage of

digital systems and microprocessors and initiate a reset

when the voltage goes below a predefined threshold.

The duration of the reset is 5/20/100/500ms (typ.) after

the supply voltage has risen above the threshold.

Supply Voltage Range 1.0 to 3.6V

Reset Threshold Available from 2.2 to 3.1V

Available in three Versions

The device exhibits excellent reliability and can reduce

application costs by eliminating all external components.

- AS1904 Push-Pull RESETN

- AS1905 Push-Pull RESET

The device is available with different output drivers:

- AS1906 Open Drain RESETN

4 Time-Out Periods Ranging from 5 to 500ms

The AS1904 has a push-pull driver with an active low

reset.

Detection Voltage Accuracy: 1.5%

The AS1905 uses the same output stage as the

AS1904, but has an active high reset.

Temperature Range: -40 to +85°C

SOT23-3 Package

The AS1906 has an open drain output with active low

reset.

Pin Compatible to MAX6326/6327/6328

All devices operate down to a voltage of 1V.

Superior Upgrade to austriamicrosystems

AS1901/2/3 Device Family

The reset thresholds are factory-trimmable between

2.2V and 3.08V in steps of approximately 100mV.

Each device of the AS1904/5/6 family is offered with four

time-out periods of 5/20/100/500ms.

3 Applications

The extremely low current consumption of only 150nA

(typ) at 3.3V makes the device ideal for use in portable

applications.

Computers

Intelligent Instruments

Controllers

All devices are available in a 3-pin SOT23 package.

Critical Microprocessor and Microcontroller

Power Monitoring

Portable/Battery-Powered Equipment

Automotive

Figure 1. Functional Block Diagrams

VCC

VDD

VCC

VDD

VCC

AS1904

AS1905

AS1906

Microprocessor

RESET,

RESETN

RESET

GND

RESETN

RESET I/O

GND

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