日本+国产+欧美,岛国av资源网,尹人香蕉久久99天天拍,精品香蕉久久久午夜福利,日本妇人成熟免费中文字幕

首頁 > 英聯(lián)產(chǎn)品 > 電源管理 > 微處理器監(jiān)控

UM803xP
3引腳微處理器復(fù)位電路

Datasheet

Reliability Report

Package Information

	Outline-SOT323.pdf
	Land Pattern-SOT323.pdf

more...

Order Sample

Key Specifications

Part Number

Description

Status

Reset Out

treset (min)

Watchdog Feature

Watchdog Timeout

Manual Reset

Power Fail Comparator

Reset Thresh. Accur. (@ +25°C) (%)

Icc (max) (μA)

RoHS Available

Oper. Temp. (°C)

Pin/Package

EV Kit Available?

UM803xP

3引腳微處理器復(fù)位電路

ACTIVE

Open-drain, active LOW

140ms

2.5

Yes

-40 to 85

3/SOT323

View All>>

Product Description

The UM803 is a microprocessor (μP) supervisory circuit used to monitor the power supplies in μP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V or +2.5V powered circuits.

The circuit performs a single function: it asserts a reset signal whenever the V_CC supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after V_CC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available.

The UM803 has an open-drain output stage. The UM803’s open-drain RESET(_______________) output requires a pull-up resistor that can be connected to a voltage higher than V_CC. The UM803 has an active-low RESET(_______________) output. The reset comparator is designed to ignore fast transients on V_CC, and the outputs are guaranteed to be in the correct logic state for V_CC down to 1V.

Low supply current makes the UM803 ideal for use in portable equipment. The UM803 is available in a 3-pin SOT323 and SOT23 package.

Features

- No External Components

- Power Supply Transient Immunity

- Guaranteed Reset Valid to V_CC=+1V

- Precision V_CC Monitoring of +2.5V, +3V, +3.3V and +5V Supplies

- Fully Specified Over Temperature

- 2μA Supply Current

- 140ms Minimum Power-On Reset Pulse Width

- Available in One Output Configuration:

Open-Drain Active-Low RESET(_______________) Output

- 3-Pin SOT323 and SOT23 Packages

- Wide Operation Temperature: -40°C to +85°C

Typical Application Circuit

Applications

- Computers

- Controllers

- Portable/Battery-Powered Equipments

- Intelligent Instruments

- Critical μP and μC Power Monitoring

- Automotive

Pin Configurations

Ordering Information

UM8 XX Z P

XX: Output Type

=03 Open-Drain Active Low

Z: Reset Threshold (V)

=L 4.63

=M 4.38

=J 4.00

=T 3.08

=S 2.93

=R 2.63

=Z 2.32

P: Package Type

=S SOT23-3

=P SOT323

Selection Table

Part Number	RESET Threshold (V)	Timeout Period (ms)	Output Type	Marking Code	Package Type	Shipping Qty
UM803LP	4.63	240	Open-Drain, Active Low	VLE	SOT323	3000pcs/7Inch Tape & Reel
UM803MP	4.38	240	Open-Drain, Active Low	VME
UM803JP	4.00	240	Open-Drain, Active Low	VJE
UM803TP	3.08	240	Open-Drain, Active Low	VTE
UM803SP	2.93	240	Open-Drain, Active Low	VSE
UM803RP	2.63	240	Open-Drain, Active Low	VRE
UM803ZP	2.32	240	Open-Drain, Active Low	VZE
UM803LS	4.63	240	Open-Drain, Active Low	03L	SOT23-3	3000pcs/7Inch Tape & Reel
UM803MS	4.38	240	Open-Drain, Active Low	03M
UM803JS	4.00	240	Open-Drain, Active Low	03J
UM803TS	3.08	240	Open-Drain, Active Low	03T
UM803SS	2.93	240	Open-Drain, Active Low	03S
UM803RS	2.63	240	Open-Drain, Active Low	03R
UM803ZS	2.32	240	Open-Drain, Active Low	03Z