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MAX8724ETI

Description
Battery Management
CategoryPower/power management    The power supply circuit   
File Size887KB,30 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX8724ETI Overview

Battery Management

MAX8724ETI Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeQFN
package instructionVQCCN, LCC28,.2SQ,20
Contacts28
Reach Compliance Codenot_compliant
ECCN codeEAR99
Adjustable thresholdYES
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeS-XQCC-N28
JESD-609 codee0
length5 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals28
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialUNSPECIFIED
encapsulated codeVQCCN
Encapsulate equivalent codeLCC28,.2SQ,20
Package shapeSQUARE
Package formCHIP CARRIER, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)245
power supply18 V
Certification statusNot Qualified
Maximum seat height0.8 mm
Maximum supply current (Isup)6 mA
Maximum supply voltage (Vsup)28 V
Minimum supply voltage (Vsup)8 V
Nominal supply voltage (Vsup)18 V
surface mountYES
technologyBICMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationQUAD
Maximum time at peak reflow temperatureNOT SPECIFIED
width5 mm
EVALUATION KIT AVAILABLE
L
AVAILAB
MAX1908/MAX8724/
MAX8765/MAX8765A
Low-Cost Multichemistry Battery Chargers
E
General Description
The MAX1908/MAX8724/MAX8765/MAX8765A highly
integrated, multichemistry battery-charger control ICs
simplify the construction of accurate and efficient charg-
ers. These devices use analog inputs to control charge
current and voltage, and can be programmed by the host
or hardwired. The MAX1908/MAX8724/MAX8765/
MAX8765A achieve high efficiency using a buck topology
with synchronous rectification.
The MAX1908/MAX8724/MAX8765/MAX8765A feature
input current limiting. This feature reduces battery
charge current when the input current limit is reached
to avoid overloading the AC adapter when supplying
the load and the battery charger simultaneously. The
MAX1908/MAX8724/MAX8765/MAX8765A provide out-
puts to monitor current drawn from the AC adapter (DC
input source), battery-charging current, and the pres-
ence of an AC adapter. The MAX1908’s conditioning
charge feature provides 300mA to safely charge deeply
discharged lithium-ion (Li+) battery packs.
The MAX1908 includes a conditioning charge feature
while the MAX8724/MAX8765/MAX8765A do not.
The MAX1908/MAX8724/MAX8765/MAX8765A charge two
to four series Li+ cells, providing more than 5A, and are
available in a space-saving, 28-pin, thin QFN package (5mm
×
5mm). An evaluation kit is available to speed designs.
Features
o
±0.5% Output Voltage Accuracy Using Internal
Reference (±0.4% for MAX8765A, 2-/3-Cell Only)
o
±4% Accurate Input Current Limiting
o
±5% Accurate Charge Current
o
Analog Inputs Control Charge Current and
Charge Voltage
o
Outputs for Monitoring
Current Drawn from AC Adapter
Charging Current
AC Adapter Presence
o
Up to 17.6V Battery-Voltage Set Point
o
Maximum 28V Input Voltage
o
> 95% Efficiency
o
Shutdown Control Input
o
Charge Any Battery Chemistry
Li+, NiCd, NiMH, Lead Acid, etc.
Ordering Information
PART
MAX1908ETI+
MAX8724ETI+
MAX8765ETI+
MAX8765AETI+
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 Thin QFN-EP*
28 Thin QFN-EP*
28 Thin QFN-EP*
28 Thin QFN-EP*
Applications
Notebook and Subnotebook Computers
Personal Digital Assistants
Handheld Terminals
Functional Diagrams
Minimum Operating Circuit
AC ADAPTER
INPUT
0.01Ω
TO EXTERNAL
LOAD
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
Pin Configuration
TOP VIEW
CELLS
PGND
VCTL
15
14
13
12
GND
ICTL
CELLS
DCIN
REFIN
VCTL
ICTL
ACIN
ACOK
FROM HOST
µP
SHDN
ICHG
IINP
CCV
CCI
CCS
CSIN
BATT
BST
DLOV
LDO
21
DLOV
LX
DHI
LX
20 19
18
17
16
LDO
22
23
24
25
26
27
28
MAX1908
MAX8724
MAX8765
MAX8765A
BST
DHI
BATT
CSSP
CSSN
CSIN
CSIP
DLO
REFIN
ACOK
ACIN
DLO
10µH
PGND
CSSN
CSSP
CSIP
0.015Ω
MAX1908
MAX8724
MAX8765
MAX8765A
11
10
9
8
ICHG
SHDN
IINP
BATT+
+
1
DCIN
2
LDO
3
CLS
4
REF
5
CCS
6
CCI
7
CCV
REF
Pin Configurations appear
CLS
end of data sheet.
at
GND
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
THIN QFN
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-2764; Rev 5; 11/09

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Description Battery Management Battery Management Battery Management Battery Management Battery Management Power Supply Support Circuit,
Is it Rohs certified? incompatible incompatible incompatible incompatible incompatible conform to
Maker Maxim Maxim Maxim Maxim Maxim Maxim
Reach Compliance Code not_compliant not_compliant not_compliant not_compliant not_compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
Humidity sensitivity level 1 1 1 1 1 1
Peak Reflow Temperature (Celsius) 245 240 245 245 240 NOT SPECIFIED
Maximum time at peak reflow temperature NOT SPECIFIED 20 NOT SPECIFIED NOT SPECIFIED 20 NOT SPECIFIED
Is it lead-free? Contains lead Contains lead Contains lead Contains lead Contains lead -
Parts packaging code QFN QFN QFN QFN QFN -
package instruction VQCCN, LCC28,.2SQ,20 VQCCN, LCC28,.2SQ,20 VQCCN, LCC28,.2SQ,20 VQCCN, LCC28,.2SQ,20 VQCCN, LCC28,.2SQ,20 -
Contacts 28 28 28 28 28 -
Adjustable threshold YES YES YES YES YES -
JESD-30 code S-XQCC-N28 S-XQCC-N28 S-XQCC-N28 S-XQCC-N28 S-XQCC-N28 -
JESD-609 code e0 e0 e0 e0 e0 -
length 5 mm 5 mm 5 mm 5 mm 5 mm -
Number of channels 1 1 1 1 1 -
Number of functions 1 1 1 1 1 -
Number of terminals 28 28 28 28 28 -
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C 85 °C -
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C -40 °C -
Package body material UNSPECIFIED UNSPECIFIED UNSPECIFIED UNSPECIFIED UNSPECIFIED -
encapsulated code VQCCN VQCCN VQCCN VQCCN VQCCN -
Encapsulate equivalent code LCC28,.2SQ,20 LCC28,.2SQ,20 LCC28,.2SQ,20 LCC28,.2SQ,20 LCC28,.2SQ,20 -
Package shape SQUARE SQUARE SQUARE SQUARE SQUARE -
Package form CHIP CARRIER, VERY THIN PROFILE CHIP CARRIER, VERY THIN PROFILE CHIP CARRIER, VERY THIN PROFILE CHIP CARRIER, VERY THIN PROFILE CHIP CARRIER, VERY THIN PROFILE -
power supply 18 V 18 V 18 V 18 V 18 V -
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified -
Maximum seat height 0.8 mm 0.8 mm 0.8 mm 0.8 mm 0.8 mm -
Maximum supply current (Isup) 6 mA 6 mA 6 mA 6 mA 6 mA -
Maximum supply voltage (Vsup) 28 V 28 V 28 V 28 V 28 V -
Minimum supply voltage (Vsup) 8 V 8 V 8 V 8 V 8 V -
Nominal supply voltage (Vsup) 18 V 18 V 18 V 18 V 18 V -
surface mount YES YES YES YES YES -
technology BICMOS BICMOS BICMOS BICMOS BICMOS -
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL -
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn85Pb15) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn85Pb15) -
Terminal form NO LEAD NO LEAD NO LEAD NO LEAD NO LEAD -
Terminal pitch 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm -
Terminal location QUAD QUAD QUAD QUAD QUAD -
width 5 mm 5 mm 5 mm 5 mm 5 mm -
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