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MAX6442KAOTVD7-T

Description
Battery Management Single Battery Monitor
CategoryPower/power management    The power supply circuit   
File Size245KB,14 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX6442KAOTVD7-T Overview

Battery Management Single Battery Monitor

MAX6442KAOTVD7-T Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSOT-23
package instructionSOT-23, 8 PIN
Contacts8
Reach Compliance Codenot_compliant
ECCN codeEAR99
Other features1.575 RESET THESHOLD VOLTAGE; BATTERY HTH AND LTH ARE 2.6V AND 2.0V
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length2.9 mm
Humidity sensitivity level1
Number of channels2
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeLSSOP
Encapsulate equivalent codeTSSOP8,.1
Package shapeRECTANGULAR
Package formSMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)245
power supply1.2/5 V
Certification statusNot Qualified
Maximum seat height1.45 mm
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)1 V
surface mountYES
technologyBICMOS
Temperature levelINDUSTRIAL
Terminal surfaceTIN LEAD
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width1.625 mm
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
CC
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
(V
CC
) 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
CC
from 1.8V to 3.3V
Available with 150ms (min) and 1.2s (min) V
CC
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
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
6 SOT23-6
6 SOT23-6
8 SOT23-8
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
CC
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
3
Pin Configurations
TOP VIEW
V
BATT
1
6
V
CC
MR
2
MAX6439
MAX6440
5
GND
4
RESET
SOT23-6
Pin Configurations continued at end of data sheet.
1
________________________________________________________________
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.
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