Datasheet > AS1909C188-T

AS1909C188-T

更新时间： 2024-09-25 12:56:03

品牌	Logo	应用领域
艾迈斯 - AMSCO		微处理器复位电路
页数	文件大小	规格书
10页	122K
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Low-Voltage Microprocessor Reset Circuits

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AS1909C188-T 数据手册

AS1907, AS1908 , AS1909

Low-Voltage Microprocessor Reset Circuits

1 General Description

The AS1907/AS1908/AS1909 microprocessor supervisory circuits

are ideal for monitoring the supply voltage of digital systems and

microprocessors.

2 Key Features

3 Output Types: Push/Pull RESET, Push Pull RESETN, and

Open Drain RESETN

Reset Threshold Range: 1.6 to 2.5V (~100mV increments)

The devices are designed to initiate a reset if the supply voltage goes

below a predefined threshold. The duration of the reset is either 1.5,

30, or 150ms (typ.) after the supply voltage has risen above the pre-

set threshold (see Ordering Information on page 9).

RESET/RESETN:

- Valid to VCC = 0.7V (AS1907 and AS1908)

- Valid to VCC = 1.0V (AS1909)

The devices are available as the standard products listed in Table 1.

Reset Pulse Widths: 1, 20, and 100ms

Supply Voltage Range: +0.7 to +3.6V

Supply Current Range: 2.6 to 7.0µA

Power Supply Transient Immunity

Requires No External Components

Operating Temperature Range: -40 to +125ºC

3-pin SOT23 Package

Table 1. Standard Products

Model

AS1907

AS1908

AS1909

Output Type

Push/Pull

Reset Type

Active-Low

Active-High

Active-Low

Push/Pull

Open-Drain

The reset thresholds are factory-set between 1.6 and 2.5V in steps

of approximately 100mV (see Table 5 on page 7).

3 Applications

The devices are ideal for use in cordless and mobile phones, MP3

players, CD and DVD players, PDAs, handheld computers, digital

cameras, hard drives, and any other application where power supply

supervisory control is required.

The devices exhibit excellent reliability, and can reduce system costs

by eliminating the need for external components. The extremely low

current consumption makes the devices ideal for use in portable

applications.

The integrated reset comparator was specifically designed to ignore

fast transients on VCC.

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

Figure 1. Application Diagrams

VCC

VCC 3

Micro-

processor

RESETN

AS1908

AS1909

AS1907

RESET I/O

RESET

RESET I/O

RESETN

RESET I/O

GND

GND 1

www.ams.com/Supervisors/AS1907-09

Revision 1.8

1 - 10

12 3 4 5 6 7...10

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与AS1909C188-T相关器件

型号	品牌	获取价格	描述	数据表
AS1909C18-T	AMSCO	获取价格	Low-Voltage Microprocessor Reset Circuits
AS1909C20-T	AMSCO	获取价格	Low-Voltage Microprocessor Reset Circuits
AS1909C22-T	AMSCO	获取价格	Low-Voltage Microprocessor Reset Circuits
AS1909C23-T	AMSCO	获取价格	Low-Voltage Microprocessor Reset Circuits
AS1910	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Reset and Watchdog
AS1910_1	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1910R-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1910S-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1910V-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1910Z-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog

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