MAX6442KAAHRD7+ datasheet, PDF

Datasheet> All Categories > Power/power management> The power supply circuit> MAX6442KAAHRD7+

MAX6442KAAHRD7+: DescriptionLow-Power, Single-/Dual-Level Battery Monitors with Hysteresis and Integrated µP Reset; CategoryPower/power management The power supply circuit; File Size243KB，14 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

Download Datasheet Parametric View All

MAX6442KAAHRD7+ Overview

Low-Power, Single-/Dual-Level Battery Monitors with Hysteresis and Integrated µP Reset

MAX6442KAAHRD7+ Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Maxim
package instruction	SOT-23, 8 PIN
Reach Compliance Code	compli
ECCN code	EAR99
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Maximum time at peak reflow temperature	NOT SPECIFIED

Preview

Download Datasheet

View All

19-2535; Rev 1; 12/05

Low-Power, Single-/Dual-Level Battery Monitors

with Hysteresis and Integrated µP Reset

General Description

The MAX6439–MAX6442 are a family of ultra-low-power

battery monitors with integrated microprocessor (µP)

supervisors. The battery monitors are offered with sin-

gle or dual low-battery output options that can be used

to signal when the battery is OK (enabling full system

operation), when the battery is low (for low-power sys-

tem operation), and when the battery is dead (to dis-

able system operation). These devices also have an

independent µP supervisor that monitors V

and pro-

vides an active-low reset output. A manual reset func-

tion is available to reset the µP with a push-button. No

external components are required.

The MAX6439–MAX6442 are offered with several facto-

ry-trimmed low-battery threshold combinations ideal for

single-cell lithium-ion (Li+) or multicell alkaline/NiCd/

NiMH applications. When the battery voltage drops

below each specified low threshold, the low-battery out-

puts are asserted to alert the system. When the voltage

rises above the specified high thresholds, the outputs

are deasserted after a 150ms minimum timeout period,

ensuring the voltages have stabilized before power cir-

cuitry is activated or providing microprocessor reset tim-

ing. The low and high thresholds provide hysteresis in

battery-operated systems to eliminate output chattering.

The MAX6439/MAX6440 offer factory-trimmed battery

monitors with a single output. The MAX6441/MAX6442

offer factory-trimmed battery monitors with dual outputs.

All battery monitors have open-drain low-battery outputs.

The MAX6439–MAX6442 monitor system voltages

) from 1.8V to 3.3V with seven fixed reset threshold

options. Each device is offered with two minimum reset

timeout periods of 150ms or 1200ms. The MAX6439/

MAX6441 are offered with an open-drain

RESET

output

and the MAX6440/MAX6442 are offered with a push-

pull

RESET

output.

The MAX6439–MAX6442 are offered in a SOT23 pack-

age and are fully specified over a -40°C to +85°C temp-

erature range.

Features

♦

Factory-Trimmed V

BATT

Threshold Options for

Monitoring Single-Cell Li+ or Multicell

Alkaline/NiCd/NiMH Applications

♦

Immune to Short Battery Voltage Transients

♦

Low Current (2.5µA typ at 3.6V)

♦

Single and Dual Low-Battery Output Options

♦

150ms Minimum

LBO

Timeout Period

♦

Independent µP Reset with Manual Reset

♦

Factory-Set Reset Thresholds for Monitoring V

from 1.8V to 3.3V

♦

Available with 150ms (min) and 1.2s (min) V

Reset Timeout Period Options

♦

-40°C to +85°C Operating Temperature Range

♦

Small 6- and 8-Pin SOT23 Packages

♦

No External Components

MAX6439–MAX6442

Ordering Information

PART

MAX6439UT_

_ _D_-T

MAX6440UT_

_ _D_-T

MAX6441KA_

_ _D_-T

MAX6442KA_

_ _D_-T

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

6 SOT23-6

8 SOT23-8

Note:

The first two “_ _” are placeholders for the battery moni-

tor voltage levels. Desired threshold levels are set by the part

number suffix found in Tables 1 and 2. The third “_” is the V

reset threshold level suffix found in Table 3. The “_” after the D

is a placeholder for the reset timeout period suffix found in

Table 4. All devices are available in tape-and-reel only. There

is a 2500-piece minimum order increment for standard ver-

sions. Sample stock is typically held on standard versions only.

Nonstandard versions require a minimum order increment of

10,000 pieces. Contact factory for availability.

Devices are available in both leaded and lead-free packaging.

Specify lead-free by replacing “-T” with “+T” when ordering.

Applications

Battery-Powered Systems (Single-Cell Li+ or

Two-/Three-Cell NiMH, NiCd, Alkaline)

Cell Phones/Cordless Phones

Portable Medical Devices

Electronic Toys

Pagers

PDAs

MP3 Players

LBO

Pin Configurations

TOP VIEW

BATT

MAX6439

MAX6440

GND

RESET

SOT23-6

Pin Configurations continued at end of data sheet.

________________________________________________________________

Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Recommended Resources

High sensitivity, normally open, double-ended, zero-voltage switching half-wave conduction circuit

Door control anti-theft alarm circuit

Universal inverter control circuit

DG type electric heating constant temperature drying oven circuit 02

555 multi-function home appliance socket circuit (1)

Adaptive pulse coding speech synthesis series

Android smart wearable device development from entry to mastery pdf download: Android smart wearable device development from entry to mastery: https://download.eeworld.com.cn/detail/flexbuilder/610872...; MartinFowler Embedded System

Why can't we develop industry software like Matlab?: [Source: Mount Rainier 2020] Recently, a lot of people in China have been crying and shouting that Matlab is a bottleneck again. If Matlab is a bottleneck, then a lot of industry software ProE, Ansys,...; eric_wang Talking

Android control LED-2-JNI basis of SinlinxA33 development board: [color=#333333][font=微软雅黑][size=18px]Although you can write applications entirely in Java, there are situations where Java itself does not meet the needs of your application. When an application canno...; babyking Embedded System

Free application: Canaan AI new product K510 development kit, RISC-V dual-core CPU @ 800MHZ (with training video): Model: K510 CRB-KIT From: Canaan TechnologyQuantity: 2The Kanzhi K510 CRB development board is equipped with Canaan's latest high-performance graphics and voice processing AI chip - Kanzhi K510. It us...; EEWORLD社区 Domestic Chip Exchange

Watchdog for C2000-8027 series: ...; Jacktang Microcontroller MCU

Some questions about magnetic field: Before we discuss, let's define a word: "magnetic intensity", which refers to a description similar to "electric field strength E". Don't give me popular science: knowledge such as magnetic field stre...; bigbat Power technology

Shortcut: S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 TA TB TC TD TE TF TG TH TI TJ TK TL TM TN TO TP TQ TR TS TT TU TV TW TX TY TZ U0 U1 U2 U3 U4 U6 U7 U8 UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UP UQ UR US UT UU UV UW UX UZ V0 V1 V2 V3 V4 V5 V6 V7 V8 V9 VA VB VC VD VE VF VG VH VI VJ VK VL VM VN VO VP VQ VR VS VT VU VV VW VX VY VZ W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE WF WG WH WI WJ WK WL WM WN WO WP WR WS WT WU WV WW WY X0 X1 X2 X3 X4 X5 X7 X8 X9 XA XB XC XD XE XF XG XH XK XL XM XN XO XP XQ XR XS XT XU XV XW XX XY XZ Y0 Y1 Y2 Y4 Y5 Y6 Y9 YA YB YC YD YE YF YG YH YK YL YM YN YP YQ YR YS YT YX Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z8 ZA ZB ZC ZD ZE ZF ZG ZH ZJ ZL ZM ZN ZP ZR ZS ZT ZU ZV ZW ZX ZY

Popular Components