Service Manuals, User Guides, Schematic Diagrams or docs for : . Electronic Components Datasheets Various MAX8731
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>> Download MAX8731 documenatation <<Text preview - extract from the document19-3923; Rev 0; 1/06
KIT
ATION
EVALU
AVA ILABLE
SMBus Level 2 Battery Charger with
Remote Sense
General Description Features
MAX8731
The MAX8731 is an SMBusTM programmable multichem- 0.5% Battery Voltage Accuracy
istry battery charger. The MAX8731 uses a minimal 3% Input Current-Limit Accuracy
command set to easily program the charge voltage,
charge current, and adapter current limit. 3% Charge-Current Accuracy
SMBus 2-Wire Serial Interface
The MAX8731 charges one to four Li+ series cells and
delivers up to 8A charge current. The MAX8731 drives Cycle-by-Cycle Current Limit
n-channel MOSFETs for improved efficiency and Battery Short-Circuit Protection
reduced cost. Low-offset current-sense amplifiers pro- Fast Response for Pulse Charging
vide high accuracy with 10m sense resistors. Fast System-Load-Transient Response
The MAX8731 current-sense amplifiers provide high Dual-Remote-Sense Inputs
accuracy (3% at 3.5A) and also provide fast cycle-by-
cycle current-mode control to protect against battery Monitor Outputs for
short circuit and system load transients. Adapter Current (4% Accuracy)
The charger employs dual remote-sense, which reduces AC Adapter Detection
charge time by measuring the feedback voltage directly 11-Bit Battery Voltage Setting
at the battery, improving accuracy of initial transition into 6-Bit Charge-Current/Input-Current Setting
constant-voltage mode. The MAX8731 provides 0.5% 8A (max) Battery Charger Current
battery voltage accuracy directly at the battery terminal.
11A (max) Input Current
The MAX8731 provides a digital output that indicates the
presence of the AC adapter, as well as an analog output +8V to +26V Input Voltage Range
that indicates the adapter current within 4% accuracy. Charges Li+, NiMH, and NiCd Battery Chemistries
The MAX8731 is available in a small 5mm x 5mm,
28-pin, thin (0.8mm) QFN package. An evaluation kit is Ordering Information
available to reduce design time. The MAX8731 is avail- PART TEMP RANGE PIN-PACKAGE
able in lead-free packages.
MAX8731ETI+ -40
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