MAX1647 Maxim, MAX1647 Datasheet
MAX1647
Manufacturer Part Number
MAX1647
Description
Chemistry-Independent Battery Chargers
Manufacturer
Maxim
Datasheet
1.MAX1647.pdf
(24 pages)
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The MAX1647/MAX1648 provide the power control neces-
sary to charge batteries of any chemistry. In the MAX1647,
all charging functions are controlled via 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 MAX1647 func-
tions as a level 2 charger, compliant with the Duracell/Intel
Smart Battery Charger Specification. The MAX1648 omits
the SMBus serial interface, and instead sets the charge
voltage and current proportional to the voltage applied to
external control pins.
In addition to the feature set required for a level 2 charger,
the MAX1647 generates interrupts to signal the host when
power is applied to the charger or 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 batteries have completed charge without interrogating
the battery.
The MAX1647 is available in a 20-pin SSOP with a 2mm
profile height. The MAX1648 is available in a 16-pin SO
package.
________________________Applications
SMBus is a trademark of Intel Corp.
19-1158; Rev 0; 12/96
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
_______________General Description
__________________________________________________________Pin Configurations
Notebook Computers
Personal Digital Assistants
Charger Base Stations
Phones
TOP VIEW
________________________________________________________________ Maxim Integrated Products
AGND
DCIN
BATT
IOUT
CCV
CCI
SEL
REF
CS
VL
10
1
2
3
4
5
6
7
9
8
MAX1647
SSOP
20
18
17
14
13
12
19
16
15
11
DLO
PGND
DACV
BST
LX
DHI
SDA
SCL
THM
INT
Chemistry-Independent
____________________________Features
______________Ordering Information
MAX1647EAP
MAX1648ESE
Charges Any Battery Chemistry:
Li-Ion, NiCd, NiMH, Lead Acid, etc.
Intel SMBus 2-Wire Serial Interface (MAX1647)
Intel/Duracell Level 2 Smart Battery Compliant
(MAX1647)
4A, 2A, or 1A Maximum Battery-Charge Current
11-Bit Control of Charge Current
Up to 18V Battery Voltage
10-Bit Control of Voltage
±0.75% Voltage Accuracy with External ±0.1%
Reference
Up to 28V Input Voltage
Battery Thermistor Fail-Safe Protection
AGND
PART
DCIN
BATT
CCV
REF
CCI
CS
VL
1
2
3
4
5
6
7
8
Battery Chargers
MAX1648
SO
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
15
14
13
12
11
10
16
9
BST
LX
DHI
DLO
PGND
SETV
SETI
THM
PIN-PACKAGE
16 Narrow SO
20 SSOP
1
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