MAX6439UTNRVD7+T datasheet, PDF

Datasheet> All Categories > Power/power management> The power supply circuit> MAX6439UTNRVD7+T

MAX6439UTNRVD7+T: Descriptionbattery management single battery monitor; CategoryPower/power management The power supply circuit; File Size245KB，14 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

Download Datasheet Parametric View All

MAX6439UTNRVD7+T Overview

battery management single battery monitor

MAX6439UTNRVD7+T Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Maxim
Parts packaging code	SOT-23
package instruction	LSSOP, TSOP6,.11,37
Contacts	6
Reach Compliance Code	compli
ECCN code	EAR99
Other features	1.575 RESET THESHOLD VOLTAGE; BATTERY HTH AND LTH ARE 2.4V AND 1.9V
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G6
length	2.9 mm
Number of channels	2
Number of functions	1
Number of terminals	6
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	LSSOP
Encapsulate equivalent code	TSOP6,.11,37
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
power supply	1.2/5 V
Certification status	Not Qualified
Maximum seat height	1.45 mm
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	1 V
surface mount	YES
technology	BICMOS
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	1.625 mm

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

Practical amplifier circuit c composed of operational amplifier LM386

Touch switch circuit using frequency-voltage converter

Multipurpose power circuit

Priority interrupt encoder circuit

Voltage controlled oscillator using ceramic vibrator

Incandescent light bulb cleverly used as transformer circuit

Serial port program to control GPRS module: Hello everyone, I want to use the program to control the GPRS module, that is, to send and receive AT commands through the program. However, my program only sends a simple "AT" and cannot read the res...; ypyuan Embedded System

TI-DSP Family: (1) Industrial ValueThe industrial value system of DSP is also the current embedded industry, and can even be expanded to the value system of the integrated circuit industry. The most basic core of th...; Aguilera DSP and ARM Processors

Please advise: What does it mean to use the system clock? Thanks!: I have a question: system clock, instruction cycle, clock cycle, external crystal oscillator, internal crystal oscillator. I have been asking about these things for a long time, but I still don't unde...; xzl Embedded System

Design of USB communication system based on MSP430: [font=宋体][color=#000000][size=12px]The teacher gave me a MSP430F5529 board. The graduation project was to design a USB communication system based on MSP430. I was asked to do it myself. But I don't kn...; 路人甲xc Microcontroller MCU

How to design and implement dual network card hot backup (dual network card redundant backup) (2)?: Hello? Under WIN2000, Ethernet network, dual network card hot backup, that is, if one network card is broken, the other redundant network card will hot switch, and the two network cards have the same ...; standby Embedded System

LPC1768 timer issue: void timer0Init (unsigned int fz0) {LPC_TIM0->TCR= 0x02;LPC_TIM0->IR= 1;LPC_TIM0->CTCR = 0;LPC_TIM0->TC= 0;LPC_TIM0->PR= 0;LPC_TIM0->MR0= SystemFrequency /(4*fz0);LPC_TIM0->MCR= 0x03;LPC_TIM0->TCR= 0x...; yunhai14 NXP MCU

Shortcut: L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

Popular Components