|
|
PDF MAX1667EAP Data sheet ( Hoja de datos )
| Número de pieza | MAX1667EAP | |
| Descripción | Chemistry-Independent / Level 2 Smart Battery Charger | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MAX1667EAP (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
|
No Preview Available !
19-1488; Rev 0; 7/99
Chemistry-Independent,
Level 2 Smart Battery Charger
General Description
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.
________________________Applications
Notebook Computers
Charger Base Stations
Personal Digital Assistants Phones
Pin Configuration appears at end of data sheet.
____________________________Features
o Charges Any Battery Chemistry: Li+, NiCd,
NiMH, Lead Acid, etc.
o SMBus 2-Wire Serial Interface
o Compliant with Duracell/Intel Smart Battery
Charger Specification Rev. 1.0
o 4A, 3A, or 1A (max) Battery Charge Current
o 5-Bit Control of Charge Current
o Up to 18.4V Battery Voltage
o 11-Bit Control of Voltage
o ±1% Voltage Accuracy
o Up to +28V Input Voltage
o Battery Thermistor Fail-Safe Protection
o Greater than 95% Efficiency
o Synchronous Rectifier
Ordering Information
PART
MAX1667EAP
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
20 SSOP
Typical Operating Circuit
CHARGE SOURCE
DCIN
REF
AGND
SEL
DACV
IOUT
VL
BST
DHI
LX
DLO
PGND
INT
CCV CS
MAX1667
BATT
SCL
SDA
CCI THM
RSENSE
VDD
HOST
CONTROLLER
SCL
SDA
INT
GND
BATT+
SCL SMART
SDA BATTERY
TEMP
BATT-
SMBus is a trademark of Intel Corp.
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
Chemistry-Independent,
Level 2 Smart Battery Charger
TIMING CHARACTERISTICS (Figures 1 and 2)
(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
SYMBOL
tHIGH
tLOW
tSU:STA
tHD:STA
CONDITIONS
SDA Valid to SCL Rising-Edge
Setup Time, Slave Clocking in Data
tSU:DAT
SCL Falling Edge to SDA Transition
SCL Falling Edge to SDA Valid,
Master Clocking in Data
tHD:DAT
tDV
MIN TYP MAX UNITS
4 µs
4.7 µs
4.7 µs
4 µs
250 ns
0 ns
1 µs
TIMING CHARACTERISTICS (Figures 1 and 2)
(TA = -40°C to +85°C, unless otherwise noted. Limits over this temperature range are guaranteed by design.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
SCL Serial-Clock High Period
tHIGH
4
SCL Serial-Clock Low Period
tLOW
4.7
Start-Condition Setup Time
tSU:STA
4.7
Start-Condition Hold Time
tHD:STA
4
SDA Valid to SCL Rising-Edge
Setup Time, Slave Clocking in Data
tSU:DAT
250
SCL Falling Edge to SDA Transition
tHD:DAT
0
SCL Falling Edge to SDA Valid,
Master Clocking in Data
tDV
MAX
1
UNITS
µs
µs
µs
µs
ns
ns
µs
_______________________________________________________________________________________ 5
5 Page 
Chemistry-Independent,
Level 2 Smart Battery Charger
VCC
+12V, -12V
SYSTEM
POWER
SUPPLY
DC (UNREGULATED) / VBATTERY
NOTE: SB 1 POWERING SYSTEM
SB 2 CHARGING
SMART BATTERY 1
SMART BATTERY 2
AC
AC-DC
CONVERTER
(UNREGULATED)
SYSTEM HOST
(SMBus HOST)
SMART BATTERY
SELECTOR
SMBus
SAFETY SIGNAL
VCHARGE
MAX1667
SMART BATTERY
CHARGER
CRITICAL EVENTS
BATTERY DATA/STATUS REQUESTS
SMBus
Figure 4. Typical Multiple Smart Battery System
Table 1. Charger Type by SMBus Mode
and Charge Algorithm Source
SMBus MODE
Slave Only
Slave/Master
CHARGE ALGORITHM SOURCE
Battery
Modified from Battery
Level 2
Level 3
Level 3
Level 3
Note: Level 1 smart battery chargers are defined in the ver-
sion 0.95a specification. While they can correctly interpret
smart battery end-of-charge messages minimizing over-
charge, they do not provide truly chemistry-independent
charging. They are no longer defined by the Smart Battery
Charger specification and are explicitly not compliant with this
and subsequent Smart Battery Charger specifications.
Level 2 Smart Battery Charger
The Level 2 or “smart-battery-controlled” smart battery
charger interprets the smart battery’s critical warning
messages, and operates as an SMBus slave device
that responds to ChargingVoltage() and Charging-
Current() messages sent to it by a smart battery. The
charger is obliged to adjust its output characteristics in
direct response to the messages it receives from the
battery. In Level 2 charging, the smart battery is com-
pletely responsible for initiating communication and for
providing the charging algorithm to the charger. The
smart battery is in the best position to tell the smart bat-
tery charger how it needs to be charged. The charging
algorithm in the battery may request a static charge
condition or may choose to periodically adjust the
smart battery charger’s output to meet its present
needs. A Level 2 smart battery charger is truly chem-
istry independent, and since it is defined as an SMBus
slave device only, it is relatively inexpensive and easy
to implement.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet MAX1667EAP.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MAX1667EAP | Chemistry-Independent / Level 2 Smart Battery Charger | Maxim Integrated |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |