FM1233BFS3X

更新时间： 2024-01-02 09:56:35

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		电源电路电源管理电路光电二极管监控
页数	文件大小	规格书
6页	34K
描述
3-Pin レC Supervisor Circuit

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技术参数
数据手册

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FM1233BFS3X 技术参数

生命周期：	Contact Manufacturer	包装说明：	TSSOP,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.68
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-G3	长度：	2.9 mm
信道数量：	1	功能数量：	1
端子数量：	3	最高工作温度：	105 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	座面最大高度：	1.14 mm
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	1.2 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	0.95 mm	端子位置：	DUAL
宽度：	1.3 mm	Base Number Matches：	1

FM1233BFS3X 数据手册

February 2003

FM1233B

3-Pin µC Supervisor Circuit

General Description

Features

The FM1233B is a supervisor circuit that monitors a micropro-

cessor power supply or other system voltage and issues a reset

pulse when a fault condition exists. Several different threshold

voltages are offered to accommodate 5V systems with different

tolerances.

Precision monitoring of 5V and lower voltage microprocessor

systems

V values of 4.62V, 4.38V and 4.12V

Automatic restart of microprocessor after power failure

140ms (min) power-on RESET delay (typ.: 256ms)

Internal 5kΩ pull-up resistor

The device features a precision temperature-compensated volt-

age reference and comparator. When V falls to the threshold

Other reset choices available: 32 to 128ms

Operating Temperature -40°C to +105°C

Monitors external pushbutton override

Internal switch debounce circuitry

voltage, a RESET pulse is issued, holding the output in the

active state. When power rises above V , the reset remains for

approximately 250 ms to allow the system clock and other cir-

cuits to stabilize. The reset output of FM1233B is of open-drain

active low type.

SOT23-3 package

The FM1233B also can monitor a switch closure on its output,

enabling it to recognize an external reset from a pushbutton

switch or a µP. In the case of a switch, the closure will be

debounced by circuitry internal to the FM1233B.

Typical Operating Circuit

VCC

FM1233B

Controller

RESET

GND

Connection Diagram

GND

VCC

FM1233B

RESET

SOT23-3 Package

FM1233B Rev. D

www.fairchildsemi.com

12 3 4 5 6

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