Datasheet > MIC2774H-XXBM5

MIC2774H-XXBM5

更新时间： 2022-11-25 17:00:12

品牌	Logo	应用领域
麦瑞 - MICREL		监控
页数	文件大小	规格书
8页	384K
描述
Dual Micro-Power Low Voltage Supervisor Advance Information

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MIC2774H-XXBM5 数据手册

MIC2774

Micrel

MIC2774

Dual Micro-Power Low Voltage Supervisor

Advance Information

General Description

Features

TheMIC2774isadualpowersupplysupervisorthatprovides

under-voltagemonitoring,manualresetcapability,andpower-

on reset generation in a compact 5-pin SOT package. Fea-

tures include two under-voltage detectors, one fixed and one

adjustable, and a choice of reset outputs. One under-voltage

• Monitors two independent power supplies for under-

voltage conditions

• One fixed and one user adjustable input

• Choice of factory-programmed thresholds

• Adjustable input can monitor supplies as low as 0.3V

• Generates 140ms (minimum) power-on reset pulse

• Manual reset input

detector compares V against a fixed threshold. Ten fac-

tory-programmedthresholdsareavailable.Thesecond,user-

adjustable input is compared against a 300mV reference.

This low reference voltage allows monitoring voltages lower

than those supported by previous supervisor ICs.

• Choice of active-high, active-low, or open-drain active-

low reset outputs

• Inputs may be pulled above V (7V abs. max.)

• Open-drain output can be pulled above V (7V abs

The reset outputs are asserted at power-on and any time

either voltage drops below the programmed threshold volt-

ages and remains asserted for 140ms (min.) after they

subsequently rise back above the threshold boundaries.

Manual reset functionality can be provided by a switch

connected between ground and the /MR input. A wide choice

of voltage thresholds provides for a variety of supply voltages

and tolerances. Hysteresis is included to prevent chattering

due to noise. Typical supply current is a low 3.5µA.

max.)

• /RST output valid down to 1.2V

• Ultra-low supply current, 3.5µA typical

• Rejects brief input transients

• IttyBitty™ 5-lead SOT-23 package

• Pin compatible upgrade for MAX6306/09/12

Applications

• Monitoring processor ASIC, or FAGA core and I/O

voltages

• PDAs, hand-held PCs

• Embedded controllers

• Telecommunications systems

• Power supplies

• Wireless / Cellular systems

• Networking hardware

Ordering Information

Part Number

Marking

UGXX

UHXX

UIXX

Reset Output

Temperature Range

–40°C to +85°C

Package

SOT-23-5

MIC2774N-XXBM5

MIC2774H-XXBM5

MIC2774L-XXBM5

Open-Drain, Active-Low (/RST)

Active-High, Complementary (RST)

Active-Low, Complementary (/RST)

Typical Application

MICROPROCESSOR

V_CORE1.0V

VCORE

VI/O

V_I/O2.5V

MIC2774L-23

/RST

VDD

/RESET GND

Power_Good

/MR

GND

Manual

Reset

IttyBitty™ is a trademark of Micrel, Inc.

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

September 29, 2000

MIC2774

12 3 4 5 6 7 8

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与MIC2774H-XXBM5相关器件

型号	品牌	描述	获取价格	数据表
MIC2774L-17BM5	ROCHESTER	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5, SOT-23, 5 PIN	获取价格
MIC2774L-17M5	MICROCHIP	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5	获取价格
MIC2774L-17YM5	MICREL	Dual Micro-Power Low Voltage Supervisor	获取价格
MIC2774L-17YM5TR	MICREL	Dual Micro-Power Low Voltage Supervisor	获取价格
MIC2774L-17YM5-TR	MICROCHIP	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5	获取价格
MIC2774L-22BM5TR	MICROCHIP	Power Supply Support Circuit, Adjustable, 2 Channel, PDSO5, SOT-23, 5 PIN	获取价格

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