MAX1667 Maxim, MAX1667 Datasheet
MAX1667
Manufacturer Part Number
MAX1667
Description
Chemistry-Independent / Level 2 Smart Battery Charger
Manufacturer
Maxim
Datasheet
1.MAX1667.pdf
(28 pages)
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The MAX1667 provides the power control necessary to
charge batteries of any chemistry. All charging functions
are controlled through the Intel System Management Bus
(SMBus™) interface. The SMBus 2-wire serial interface
sets the charge voltage and current and provides thermal
status information. The MAX1667 functions as a Level 2
charger, compliant with the Duracell/Intel Smart Battery
Charger Specification.
In addition to the feature set required for a Level 2 charg-
er, the MAX1667 generates interrupts to signal the host
when power is applied to the charger or when a battery is
installed or removed. Additional status bits allow the host
to check whether the charger has enough input voltage,
and whether the voltage on or current into the battery is
being regulated. This allows the host to determine when
lithium-ion (Li+) batteries have completed the charge with-
out interrogating the battery.
The MAX1667 is available in a 20-pin SSOP with a 2mm
profile height.
SMBus is a trademark of Intel Corp.
________________________Applications
19-1488; Rev 0; 7/99
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Pin Configuration appears at end of data sheet.
Notebook Computers
Personal Digital Assistants
________________________________________________________________ Maxim Integrated Products
DCIN
REF
AGND
SEL
DACV
CCV
CCI
General Description
PGND
BATT
IOUT
THM
DLO
SCL
SDA
BST
DHI
INT
CS
VL
LX
Charger Base Stations
Phones
Level 2 Smart Battery Charger
Chemistry-Independent,
R
SENSE
____________________________Features
MAX1667EAP
Charges Any Battery Chemistry: Li+, NiCd,
NiMH, Lead Acid, etc.
SMBus 2-Wire Serial Interface
Compliant with Duracell/Intel Smart Battery
Charger Specification Rev. 1.0
4A, 3A, or 1A (max) Battery Charge Current
5-Bit Control of Charge Current
Up to 18.4V Battery Voltage
11-Bit Control of Voltage
±1% Voltage Accuracy
Up to +28V Input Voltage
Battery Thermistor Fail-Safe Protection
Greater than 95% Efficiency
Synchronous Rectifier
CHARGE SOURCE
PART
Typical Operating Circuit
TEMP. RANGE
-40°C to +85°C
Ordering Information
V
SCL
SDA
INT
GND
BATT+
SCL
SDA
TEMP
BATT-
DD
CONTROLLER
HOST
PIN-PACKAGE
20 SSOP
BATTERY
SMART
1
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