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PDF MAX1648ESE Data sheet ( Hoja de datos )
| Número de pieza | MAX1648ESE | |
| Descripción | Chemistry-Independent Battery Chargers | |
| Fabricantes | Maxim Integrated | |
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19-1158; Rev 0; 12/96
Chemistry-Independent
Battery Chargers
_______________General Description
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
Notebook Computers
Personal Digital Assistants
Charger Base Stations
Phones
____________________________Features
o Charges Any Battery Chemistry:
Li-Ion, NiCd, NiMH, Lead Acid, etc.
o Intel SMBus 2-Wire Serial Interface (MAX1647)
o Intel/Duracell Level 2 Smart Battery Compliant
(MAX1647)
o 4A, 2A, or 1A Maximum Battery-Charge Current
o 11-Bit Control of Charge Current
o Up to 18V Battery Voltage
o 10-Bit Control of Voltage
o ±0.75% Voltage Accuracy with External ±0.1%
Reference
o Up to 28V Input Voltage
o Battery Thermistor Fail-Safe Protection
______________Ordering Information
PART
MAX1647EAP
MAX1648ESE
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 SSOP
16 Narrow SO
__________________________________________________________Pin Configurations
TOP VIEW
IOUT 1
DCIN 2
VL 3
CCV 4
CCI 5
SEL 6
CS 7
BATT 8
REF 9
AGND 10
MAX1647
20 BST
19 LX
18 DHI
17 DLO
16 PGND
15 DACV
14 SDA
13 SCL
12 THM
11 INT
DCIN 1
VL 2
CCV 3
CCI 4
CS 5
BATT 6
REF 7
AGND 8
MAX1648
SO
16 BST
15 LX
14 DHI
13 DLO
12 PGND
11 SETV
10 SETI
9 THM
SMBus is a trademark of Intel Corp.
SSOP
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
1 page  
TIMING CHARACTERISTICS—MAX1647
(TA = 0°C to +85°C, unless otherwise noted.)
PARAMETER
SCL Serial-Clock High Period
SCL Serial-Clock Low Period
Start-Condition Setup Time
Start-Condition Hold Time
SDA Valid to SCL Rising-Edge
Setup Time, Slave Clocking in Data
SCL Falling Edge to SDA Transition
SCL Falling Edge to SDA Valid,
Master Clocking in Data
SYMBOL
tHIGH
tLOW
tSU:STA
tHD:STA
tSU:DAT
tHD:DAT
tDV
Chemistry-Independent
Battery Chargers
CONDITIONS
MIN TYP MAX UNITS
4 µs
4.7 µs
4.7 µs
4 µs
250 ns
0 ns
1 µs
TIMING CHARACTERISTICS—MAX1647
(TA = -40°C to +85°C, unless otherwise noted. Limits over this temperature range are guaranteed by design.)
PARAMETER
SCL Serial-Clock High Period
SCL Serial-Clock Low Period
Start-Condition Setup Time
Start-Condition Hold Time
SDA Valid to SCL Rising-Edge
Setup Time, Slave Clocking in Data
SCL Falling Edge to SDA Transition
SCL Falling Edge to SDA Valid,
Master Clocking in Data
SYMBOL
tHIGH
tLOW
tSU:STA
tHD:STA
tSU:DAT
tHD:DAT
tDV
CONDITIONS
MIN TYP
4
4.7
4.7
4
250
0
MAX
1
UNITS
µs
µs
µs
µs
ns
ns
µs
_______________________________________________________________________________________ 5
5 Page 
Table 1b. Component Suppliers
MANUFACTURER
AVX
Central Semiconductor
Coilcraft
Coiltronics
Dale
IR
IRC
NIEC
Siliconix
Sprague
Sumida
Zetex
PHONE
(803) 946-0690
(516) 435-1110
(847) 639-6400
(561) 241-7876
(605) 668-4131
(310) 322-3331
(512) 992-7900
(805) 867-2555
(408) 988-8000
(603) 224-1961
(847) 956-0666
(516) 543-7100
FAX
(803) 626-3123
(516) 435-1824
(847) 639-1469
(561) 241-9339
(605) 665-1627
(310) 322-3332
(512) 992-3377
(805) 867-2698
(408) 970-3950
(603) 224-1430
(847) 956-0702
(516) 864-7630
Chemistry-Independent
Battery Chargers
_______________Detailed Description
Output Characteristics
The MAX1647/MAX1648 contain both a voltage-
regulation loop and a current-regulation loop. Both
loops operate independently of each other. The volt-
age-regulation loop monitors BATT to ensure that its
voltage never exceeds the voltage set point (V0). The
current-regulation loop monitors current delivered to
BATT to ensure that it never exceeds the current-limit
set point (I0). The current-regulation loop is in control
as long as BATT voltage is below V0. When BATT volt-
age reaches V0, the current loop no longer regulates,
and the voltage-regulation loop takes over. Figure 5
shows the V-I characteristic at the BATT pin.
R3
R4
C3
R2
C2
R8
R9 R10
R11
C4
REF VL
THM
MAX1648
CCI
DCIN
DHI
BST
CCV
LX
DLO
PGND
CS
SETI
BATT
SETV AGND
C6
C5
R5
D2
M1
C7
M2
L1
D1
D4
DC SOURCE
7.5V–28V
D3
C1
T
R1
BATTERY
Figure 4. MAX1648 Typical Operating Circuit
______________________________________________________________________________________ 11
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